The person who wrote this had an app that ran, a short list of what was missing, and a job that had just gotten busy. In a public Reddit post they wrote: “The payments, privacy settings, etc. I have entered my crazy time of year for work and I need someone to wrap this up for me.” The same person went on to say they were after a service that could get the app ready for the public, and asked whether anyone knew of one.
People arrive at this search from two places. Some have an app that mostly works and beta users waiting on it. Others have run out of patience with the tool and would rather pay a person than spend another month on it. Both then hit the same wall, which is that the word “finish” does not tell anyone what to price.
Hiring a developer to finish your app works when “finish” names specific things. In apps that already run, four items are almost always what is left: sign-in that holds up, money that arrives intact, who is allowed to see what, and the part that only breaks once real people arrive.
The four items on this page were counted out of AxonBuild’s own audit ledger for 26 AI-built applications, read again on 26 August 2026 against the search results for this exact question and the three hiring pages on them that could be opened. The ledger supplied how often each item was wrong; the search results supplied nothing at all about an app that already runs. No agency, freelancer or marketplace was contacted for a price, and no application was run or rebuilt for this page.
The four things still missing when an AI-built app looks finished
The counts here come from 26 real applications AxonBuild audited in June and July 2026. Eleven were third-party apps taken through every area. Ten more were held back and audited without the engine having seen them before. Five were the founder’s own projects. At least one confirmed critical finding turned up in 22 of those 26, and no application in the set came out clean, the founder’s five among them. So the state your app is in is the normal state, and it is worth knowing that before you talk to anyone about price. Every number below is a count out of that ledger, and the cohort rules and method behind these counts are published in full.
| What is missing | What it actually is, in plain words | What the audits found | Who has to do it |
|---|---|---|---|
| A sign-in that holds up | Nobody can act as somebody else, and no page does real work for a visitor who never logged in | An endpoint doing privileged work with no authentication check at all turned up in 11 of the 21 third-party applications in AxonBuild’s June to July 2026 audit ledger | A person, because the rule has to hold in every file at once |
| Money that arrives, and cannot be edited on the way | Your server decides what gets charged, the browser does not, and a card that fails is handled | The server accepted whatever the browser told it in 10 of the 21 third-party applications audited in June and July 2026 | A person, because being wrong here costs real money |
| Roles, meaning who is allowed to see whose things | Two customers with accounts cannot read or change each other’s records | Across the 14 third-party applications of that same June to July 2026 cohort where roles applied at all, the authorization area scored an average of 42.1 out of 100 | A person, for the same reason as the first row |
| The part that only breaks once real people arrive | Limits on how often anything expensive can be triggered, and somewhere that failures get recorded | No limit on how often the most expensive thing in the app could be triggered, in 13 of the 21 third-party applications in the ledger | A person, because nobody thinks to prompt for it |
1. A sign-in that holds up when a stranger tries it
Most AI-built apps have a login screen. What is missing is everything behind it agreeing on who the visitor is. In 11 of the 21 third-party applications in that ledger, at least one endpoint did privileged work with no authentication check at all, which means the login screen was decoration for that particular path. One audited app let anyone mint a valid login token for a real account with no password. An audited health-data API handed a stranger a valid access key for another person’s account just by asking for it.
Across the 14 third-party applications in that cohort that had a sign-in at all, authentication averaged 52.8 out of 100. That is a middling score for the area most owners assume is finished, and it is middling for a boring reason: a builder writes the login screen when you ask for a login screen, and then writes forty other things that each have to remember the answer.
As paid work this is one job with a clear end. Somebody goes through every path that changes or reveals something, checks that each one asks who is calling, and fixes the ones that do not. You can tell it is done without reading code: a second account, a logged-out browser window, and a short list of things that should be refused.
2. Money that arrives, and cannot be edited on the way
A payment button that shows a success message is not the same as money in your account. The audits found the server accepting whatever the browser told it in 10 of the 21 third-party applications audited in June and July 2026. In one audited food-delivery app the order total was whatever the shopper’s browser said it was. An audited CRM dashboard kept the whole customer list in the browser’s own storage, one “clear data” away from gone.
The honest part of this number is which number it is. Revenue and billing was scored on only 3 of the 21 applications in that ledger, because a payment surface was rare in this cohort, and the patterns index marks that sample as too small to draw a rate from. So there is no payment defect rate on this page. What there is instead is the count above, which measures the habit underneath most payment bugs: the server trusting the browser about something the browser should not get a vote on. The specific ways money goes missing on the way in covers the individual failures.
Wiring up billing so money actually lands, survives a failed card and matches what the store expects, is one job with its own sequence. Bought as one item it is priceable. Bought as part of “finish the app” it is where estimates go wrong, because the person quoting has no idea whether they are adding a payment provider or repairing one.
3. Roles, meaning who is allowed to see whose things
Roles scored an average of 42.1 out of 100 in the 14 third-party applications of the June to July 2026 cohort where the area applied at all. Only four of the twelve areas the audits score came out lower, and this is the one owners find hardest to picture, because it only shows up once two real customers exist at the same time.
The clearest example in the corpus is that food-delivery app again. It let anybody signing up declare themselves a customer, a seller or a driver, and checked none of it. Nobody prompted for that. The builder was asked for signup with a role, and it built signup with a role.
This is the item most likely to be sitting at zero rather than half done, and it is the one where “finish it” and “build it” are genuinely different jobs. Ask whoever quotes to tell you which of the two they think it is, and to say why in one sentence you can understand.
4. The part that only breaks once real people arrive
Nothing in the first three shows up while you are the only user. Neither does this one. In 13 of the 21 third-party applications in the ledger there was no limit on how often the most expensive thing in the app could be triggered. One audited app let anyone send login codes to any email address, which ran up the email bill and nothing else, right up until it did not.
The same gap covers the other half of the item: when something goes wrong for a user at two in the morning, somewhere has to record it, and somebody has to be able to look. Owners almost never ask for this, sellers almost never quote it unprompted, and it is the cheapest of the four to add early.
Getting the finished app into a store is its own piece of work, with its own account and its own reasons for being turned down, and it is worth pricing separately from the four items rather than folding it in.
A percentage cannot be priced. Two owners both saying three quarters done are describing different amounts of work and neither of them knows which. Four named items can be given a rough range by anyone who reads them, in about ten minutes, without touching the code; a price you can hold somebody to comes only after they have looked at the code and the services behind those items. Working out whether what is left is a finishing job at all, by counting yes-or-no answers about your own app, is the step before this one. The same stretch is described in MVP words as the last part of a first version, and the list underneath it does not change.
Which of the four the builder can still do, and which one needs a person
Start by buying less. The tool you already pay for is still the cheapest way to do a specific kind of work, and paying a person for that kind is a waste of both.
What the builder is still good at is visible things on screens that already exist. A new field, another page, a different sort order, a second view of data you already store. Lovable, Base44, Replit, Bolt, Cursor and the rest all handle that class well, because the change is local: it lives in one or two files and you can see whether it worked by looking. Paying somebody to add one named feature to an app that already runs is the cheapest shape of this work, and it is worth separating from the rest before you buy anything bigger.
Items 1 and 3 are the opposite class. A sign-in that holds up and a working idea of who may see what live as a rule that has to hold in every file at once, including the twelve files somebody adds next month. A prompt changes what it was pointed at. It does not go back and check the rest, and it does not know what the rest is. The count in the table above sits at 11 out of 21 rather than 1 out of 21 for that reason: nothing was broken on purpose, and no single prompt owned the whole rule.
Item 2 is where the tool can usually produce something and the cost of it being subtly wrong is money. A checkout flow that looks right and charges the wrong amount is worse than no checkout at all, because it fails quietly and the person who notices is your customer. Whether another month of credits costs more than paying a person once is an arithmetic question with real numbers behind it, and payments is where that arithmetic usually stops being close.
Item 4 is invisible to a prompt for a simple reason: nobody prompts for it. You have to already know that a login-code endpoint can be hammered before you can ask for a limit on it. That kind of knowledge is most of what you are buying when you hire somebody for this stretch. What starts breaking once real numbers of people arrive covers what shows up at that point and why none of it appeared during testing.
None of this means stopping work in the builder. It means splitting the list before you shop. Where the line sits between what you keep doing yourself with the tool and what is cheaper to pay a person for is its own split, and it moves depending on how much of your own time you count.
Finishing, taking over, and one fix today are three different buys
Finishing, taking over and fixing one thing today are three different purchases that share one word. Finishing buys a named list. Taking over buys a person who can operate the app without you, which is a longer commitment. One fix buys a single repaired behaviour, tested and finished.
| What you want | What you are buying | How you know it is done | Where it goes wrong |
|---|---|---|---|
| These four things finished | Named items built into code that already runs | Each item does what you wrote down that it would do | ”Finish” is left meaning whatever the seller assumed |
| Somebody to run it from here | A person who can operate, change and undo the app without you | They have done each of those things once, on your app, while you watched | The undo half is never proved until something breaks |
| One thing fixed today | One specific behaviour repaired in an app that otherwise works | An agreed test passes | Several problems get bundled in and the price stops meaning anything |
Row one is this page. Row two is a different arrangement with a different shape, and buying it by accident is common, because “can you finish it” and “can you look after it” sound like the same sentence when you are tired. Keeping one person on afterwards, and proving they can operate the app without you, is a second purchase with its own checks. Paying somebody by the month to stay available after the list is done is a different arrangement again from paying for the list.
Row three is the one to check first, because it is the cheapest. If the app worked last week and one specific thing stopped working after a change, that is not a finishing job at all. The app worked this morning and a prompt broke it is the more common version of this than most owners expect, and it is worth ruling out before you go shopping for four items.
Two situations sit underneath all three rows and change who you can even talk to. When the person who built it stopped answering, the accounts come back before anybody new starts, and that sequence has its own page. When a previous hire ended with the app still unfinished, what went wrong in the hiring is worth reading before the next one starts, because the same gap usually reopens.
Then there is the question of who you buy from. Individual freelancers, agencies and marketplaces all sell this work, and the marketplaces are where most people look first: Upwork, Fiverr and Toptal are the names that come up. What any of the three actually lists could not be checked for this page, because all three refused an automated read on 26 August 2026: upwork.com/hire/mobile-app-developers/, fiverr.com/categories/programming-tech and toptal.com/faq, credited by address rather than linked because each of them sells the hire. Choosing between a freelancer, an agency and a small AI-native team, before you know which of the four items you are buying, is the wider hiring question, and it is genuinely hard to answer in that order. A small team that works only on AI-built apps is a fourth shape of seller, and what each shape is good at is a separate map.
Say which of the four you are buying, or the price will not hold
Write the ask yourself, in your own words, in a message or on one page. It is not a document anybody hands you, there is no template to download, and nothing about this needs to look official. Six lines of plain text does the whole job.
Name the items you want. For each one, write a sentence saying what working looks like, in language you could check yourself. “A second person can sign up and cannot see my test account’s orders.” “A card that fails leaves the order unpaid and tells the customer.” “Nobody can trigger the email code more than a few times an hour.” Each of those is a fact somebody can demonstrate to you on a call, without either of you reading code.
That last property is the whole point of the exercise. The word “finish” on its own cannot be demonstrated, which is why open-ended arrangements exist and why they drift. A sentence you can watch somebody prove ends the job at a moment both of you agree on.
Two boundaries are worth naming here. The size of the first job, meaning how much to risk on somebody you have never worked with, is a separate decision from what the job contains. So is the material a seller wants in hand before quoting: everything a stranger needs to see before they can put a number on it is a short list, and it is not the same list as the four things above. The questions to put to whoever answers, and how to grade what they say back, are set out separately.
Once somebody has agreed to the work, the material changes. What to hand over once somebody has agreed to the work is a different set of things from the ask itself, and sending it too early usually slows the quote down rather than speeding it up. Who is responsible for keeping an AI-built app running once nobody is actively building on it is a question worth answering before the finishing work starts, not after it.
Why the search results price a build that does not exist
Search results for this question price a build that has not started. Of the three first-page results that could be read on 26 August 2026, all three quote a from-scratch app: $25,000 upwards, $40,000 to $60,000, or $70,350 for four months. None of them describes an app that already runs.
What those three pages say, all read on 26 August 2026. AppDevelopmentCost.com, a site that routes readers to sellers, says “most apps will cost at least $25,000” and puts high-powered apps in “seven-figure territory”, with in-app purchases at “at least $750”. That page shows no publication or update date anywhere, which is the weakest citation on this page and is flagged as such.
Adalo, which sells a no-code app builder and therefore sells the alternative to hiring anybody, publishes “$40,000 to $60,000” for a simple app, “$60,000 and $120,000” for medium complexity and “at least $120,000” for complex projects, on a page stamped “UPDATED MAR 02, 2026”.
Cleveroad, a development company that sells outsourcing, publishes hourly bands by region on a page stamped “Updated 02 Jan 2026”: Asia “$25 to $40”, Central Europe “$40 to $65”, South America “$50 to $70”, Western Europe “$70 to $90”. Its project totals run $70,350 for a basic app over four months, $120,600 for a medium one over six, and $201,000 for a complex one over ten.
All three are credited by address rather than linked, because all three sell to the same buyer this page is written for: appdevelopmentcost.com/hire-someone-to-build-an-app, adalo.com/posts/should-you-hire-a-developer-to-build-a-mobile-app-in-2023/ and cleveroad.com/blog/hire-app-developers/. The fourth page-one result, upwork.com/hire/mobile-app-developers/, was blocked to an automated read with an HTTP 403 on 26 August 2026, so nothing at all is claimed about what it says.
Those are real numbers for a real job. They are the price of starting at zero with nothing built, which is the job all three companies sell, and they have no relationship to an app that already runs and is missing four things. Reading them as your price is the single most reliable way to conclude that finishing is unaffordable, and then not finish.
The saved question set Google held for this exact search on 14 August 2026 makes the same point from the other side. Three of its four questions ask what something costs or what an app is worth, and the fourth asks whether a chatbot could build the app instead. Not one of the four asks what the money buys. That is why this page spends its words on the contents and routes the price question to one place. Hourly bands, agency minimums and what the four hiring routes cost against one another all live on the page that owns the money question, and this page does not repeat any of them. If a number is what you came for, what an app developer charges for work on an app that already runs is the one to read.
The only page-one results written for somebody whose app already exists were two forum threads. One of them, in r/AppDevelopers, is titled “Looking to hire someone to help me finish my app”. It is credited by title only and left unlinked at reddit.com/r/AppDevelopers/comments/1r5viw0/looking_to_hire_someone_to_help_me_finish_my_app/, because the thread itself was not opened for this page and Reddit refuses an automated read.
AxonBuild’s own terms are short, and it is worth saying what they are. The first call runs twenty minutes, costs nothing, and is where you show Bilal the app and the list of what does not yet finish. If you want him to finish it, he checks the app and gives you a fixed quote for the items you agree on, quoted after reading the code rather than off a description. You see each item working before you pay, and the next item can follow the first without planning all four up front. How the call and quote work is set out on the page that carries the terms.
Common questions about hiring someone to finish an app
Can I pay someone to code for me?
Yes, and for an app that already runs it is the ordinary way the last pieces get built. You are paying for named changes to code that exists, rather than for somebody’s time in the abstract, which is what makes it possible to agree a price up front. The practical requirement on your side is being able to say what should be true when each thing is done, in plain words you could check yourself.
Who can help me develop an app I already started?
Four kinds of seller take this work: an individual freelancer, an agency, a small team that works only on AI-built apps, and a fixed-price shop that sells one result at a time. Which one fits depends on how many of the four items you are buying, how soon you need them, and whether any of them needs a specialty the person does not have, rather than on the labels alone. Running the hire from the first message through to an agreed start date is a process with steps of its own.
Can I have someone build an app for me when part of it already exists?
Yes, and it usually costs less than starting from nothing, because the screens, the data shapes and the working parts are already there to be read. What changes is the shape of the conversation: somebody has to look at what exists before they can price the gap, and any number given before that look is a guess. Expect the first thing a serious seller asks for to be access, not a description.
What am I actually paying for when I hire someone to finish my app?
In an app that already runs, the four things below are the usual examples, and the actual list comes from an inventory of what your own app does not yet finish: a sign-in that holds up when a stranger tries it, money that arrives and cannot be edited on the way, roles that keep two customers apart, and limits plus recording for the part that only breaks once real people arrive. Those four are what the audit ledger found missing or wrong most often across the 26 apps it covers, and they are the ones a builder is least likely to have finished on its own. AxonBuild quotes that list only after Bilal has checked the app, one fixed figure for the items you agree on, and you pay after you see them working.
Do I need to know what is missing before anyone can quote?
No, but knowing makes the quote faster and usually lower, because the alternative is paying somebody to find it out for you. The cheapest version is to answer the four items yourself as yes, no or not sure, and send those four answers. A seller holding four sentences can price the job on one call; a seller holding “it is nearly done” has to guess, and guesses come in high.
Should I hire one person or a team to finish it?
One person, in most cases where the app already runs and the list is finite. Four items of the kind above are usually one person’s work, and how many weeks depends on what the inspection finds; a team adds coordination cost that a short list does not need. A single app almost never needs a team at all, and the honest reasons a team exists are worth knowing before somebody tries to sell you one.
What if the person I already paid stopped answering?
Nothing about finishing can start until the accounts are back in your name: the code, the database, the hosting and the domain. That is a separate sequence with its own order, and it is not an engineering problem, so paying a new developer to sit and wait for it is a waste. Ask whoever holds each of those four to add you as an owner, then write down which ones you still cannot reach, because that list is what decides the price.
Can I test somebody on a small piece first?
Yes, and it is the cheapest protection available to somebody who cannot read code. Buy one item from the list rather than all four, watch them prove it works the way you wrote it down, and only then agree the rest. Working out whether somebody is any good, without reading a line of code, comes down to a handful of checks that take about an hour, and those pair with a small first job rather than replacing it.
Built it with AI. Can’t get the last part right?
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