Replacing your business software with an AI-built tool
You rebuilt your management software with Claude or Lovable and your team prefers it. Before switching off the vendor: migrating your history, compliant documents, data responsibility, and a backwards plan from your contract end and next audit.
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Every year you pay for management software that does too many things you do not use, and not the one you need. One weekend, with Claude or Lovable, you rebuilt the essentials your way. It works, and your team prefers it. The real question remains: can you switch off the old software without losing your history, without a wrong document on audit day, and without everything resting on you?
Can you replace your business software with an AI-built tool?
Yes, and more and more business owners do. Replacing your business software with an AI-built tool means leaving an off-the-shelf product paid by subscription (sales management, case tracking, your industry's CRM) for a custom tool built from what you prototyped with Claude, Lovable or Bolt. What decides success is not the prototype. It is the switchover: the data, the documents, and what happens afterwards.
| Topic | Off-the-shelf software | In-house tool built with AI |
|---|---|---|
| Fit with your business | Built for the industry average, you adapt | Matches your rules, your screens, your words |
| Cost | Subscription, often per user, rising over time | Modest hosting, plus development and maintenance time |
| Changes | On the vendor's roadmap | When you decide |
| Security and backups | Handled by the vendor | On you, to be set up |
| Compliance (GDPR, official documents) | Often built for your industry | To check one by one |
| If the key person is away | Vendor support answers | Nothing moves, unless someone else knows the tool |
What are the traps of switching over?
They come up with almost every business owner who shows us their tool. The typical case: a small business owner rebuilt their management software with AI, their vendor contract ends in a few months, and a certification audit comes before that. Here is what is at stake.
Your history stays with the vendor
Years of records, invoices, signed documents. Your tool starts empty. You need a complete export from the old software, in a usable format, then to load it into the new one without duplicates or losses. Some vendors provide a clean export, others a raw file, others nothing without negotiation. Ask early.
The contract end date does not move
If the contract ends in February, the tool must be ready, data included, before then. Once access is cut, getting your history back becomes much harder. Note the date, the cancellation notice and the export terms in your contract.
Official documents must be flawless
Invoices, certificates, agreements, documents required by a certification body: off-the-shelf software produces them from proven templates. Yours must do as well, with the right mentions, gapless numbering and a record of who did what and when. An auditor does not look at your screens, they look at your evidence.
You become responsible for the data
With a vendor, security and backups were their problem. With your tool, they are yours, including under GDPR. If you store sensitive data (social security numbers, health data, ID documents), the bar goes up a notch.
Everything rests on one person
You built the tool, only you know how to change it, and often only you can access the server. The day you are sick, on holiday or simply busy running the company, the tool freezes. It is the most underestimated risk.
Trap 4 comes first, before any new feature. We describe what we find when auditing this kind of tool in vibe coding: what to check before going to production.
How do you organize the switchover, step by step?
The order that avoids bad surprises: secure, rehearse, and only then switch off.
List what the old software really does
Not what you use every day, everything it does: automatic reminders, invoice numbers, emails sent on your behalf, exports for your accountant. Those invisible functions are what goes missing on day one.
Ask for the data export now
Do not wait until the end. A first export shows you the format, reveals missing fields, and leaves time to negotiate if the vendor drags its feet.
Secure the tool before loading real data
Move secrets out of the code, set up off-server backups, share access with a second person, remove those who should no longer have it, sign GDPR agreements with anyone who touches the data.
Set up a test environment and rehearse the import
Import the history into a copy of the tool, check a few records by hand, fix, start again. Rehearse until the import runs without manual touch-ups. This is also where you check that generated documents are compliant.
Run both side by side
A few weeks during which the old software remains the reference while the team works in the new one. Every gap between the two is a bug found before it costs you.
Switch off the old one, and keep an archive
Once the last import is done and checked, cancel. Keep a complete, dated, read-only export of the old software: it is your evidence if an inspection covers an earlier period.
How much does it cost compared to your current subscription?
An honest comparison runs over three years, not one month. The vendor subscription shows on the invoice; the cost of your tool hides in the time spent.
| Item | Off-the-shelf software | In-house tool |
|---|---|---|
| License or subscription | The listed price, often per user, raised every year | None, but hosting, database and tools (a few dozen euros a month) |
| Setup | Configuration, training | Securing, data migration, compliant documents |
| Changes | Up to the vendor, sometimes paid | Your time, or a developer's |
| Maintenance and incidents | Included | To plan for: updates, fixes, monitoring |
If your tool only costs your evenings, it is cheaper. If you count the time you no longer spend running the business, the comparison changes. That is why many owners keep the design work (they know what they want) and hand security, migration and maintenance to a team. At Figue, that is a €1,990 excl. VAT monthly subscription, no commitment, that takes the tool where it is. Transparency: this is our offer, compare it with your options.
To put a number on maintenance, we detailed the items and ranges in how much application maintenance costs.
Who is it a good idea for, and who is it not?
What next: if you plan to sell your tool to other companies in your industry, read turning your Claude project into a real SaaS. If you are starting from scratch, see getting your first business software built, or our custom business software offer.
FAQ
Frequently asked questions
What business owners ask before leaving their software for an AI-built tool.
Can you replace business software with an app built with Claude or Lovable?
Yes, if the app is secured before real data goes in, if the old software's history is migrated, and if the documents it produces are compliant. The prototype proves the use case; the switchover needs a plan, a rehearsed import and a few weeks running side by side.
How do you get your data back when leaving a software vendor?
Ask for a full export early, well before the contract ends, and check what your contract says about reversibility. GDPR also gives a right to portability for personal data. Do a first export to see the format, then a last one right before switching off.
How long should you plan for the switchover?
Count backwards from the contract end or your next audit: about a month running side by side, two to three weeks of import rehearsals, and the time to secure the tool before that. For a tool that already works, three months is a reasonable margin.
Can an AI-built tool pass a certification audit?
It can, as long as it produces complete documents and keeps a record of who did what and when. The auditor judges the evidence, not the tool that produced it. Check each document type against the standard before the audit, on real data.
Should you keep the old software after switching?
Not the subscription, but a complete, dated, read-only export of your data. It will serve as evidence if an inspection covers a period before the switch, and as a safety net if a record was migrated wrong.
