Two starting points, and that is where everything is decided
AppSheet starts from your data as it is. A spreadsheet already exists, with its columns and its habits; the platform plugs into it and derives an application. That is a real and often underrated strength: the shortest path from a working spreadsheet to clean data entry in the field, with no migration and no disruption.
Blueprint Maker starts from your business described in plain words, not from your columns. You explain what you track, what depends on what, what you want to see in the morning; AI turns that into a plan — entities, relations, screens, indicators — that you validate before anything is built; then deterministic builders generate a complete application with its relational Prisma database, its routes, its screens and its dashboard.
So the difference is not "which platform is better", but **what serves as the backbone**: a spreadsheet whose shape the application inherits, or a relational schema designed for the business you have just described. The first embraces what exists; the second straightens it out.
A sheet has no relations, a database does
A spreadsheet lines up rows. As soon as a business has two objects that talk to each other — an order and its lines, a member and their dues, an item and its movements — the spreadsheet simulates it by copying: you retype the customer name on every row, and two spellings end up coexisting.
A Blueprint Maker application puts those links in the schema: the customer exists once, the order references them, and renaming the customer renames them everywhere. That constraint is what makes possible things no amount of copying gives you: a record page showing its attached history, indicators computed by query rather than typed in, and guards at write time.
This is not a criticism of AppSheet — an application built on a well-kept data source works perfectly well. It is a question to ask before choosing: is your difficulty entering more cleanly what you already enter, or structuring what the spreadsheet can no longer hold?
Where the application lives, and who owns it
An AppSheet application lives in the platform: the platform runs it, distributes it and governs it, with the organisation's accounts. For an IT department already settled in Google Workspace, that is coherent and even desirable — administration is centralised where it already is for everything else.
A Blueprint Maker application is standalone software. The code produced is standard Next.js + Prisma: it exports as a ZIP, pushes to GitHub, hosts wherever you want or on the included dedicated URL. Any developer can open it, audit it and extend it — with no account on our platform, and without us.
That is the difference between configuring a tool and owning an asset. Neither is superior in the abstract; they simply do not commit you to the same thing over five years.
What you pay for, and what grows with you
Internal-app platforms classically charge by usage or per user: the bigger the team, the more the tool costs. That is logical from the vendor's standpoint, and it is a budget line that lives as long as the application does.
Blueprint Maker charges for generation, not for users: free Discovery, Pro at €25/month, Max at €149/month, with the credit cost shown before each generation. The resulting application is then used with no user meter: it is your software. Hiring someone does not make the tool you already have more expensive.
Blueprint Maker and AppSheet side by side
| Blueprint Maker | AppSheet | |
|---|---|---|
| Starting point | A plain-language description of the business, from which AI derives a plan you validate | Existing data, often a spreadsheet, from which the platform derives the application |
| Data foundation | A relational Prisma database designed for the described business: relations, constraints, attached history | The connected data source, with the shape it already has |
| Where the app runs | Standalone web application, on the included dedicated URL or at the host of your choice | Inside the platform, distributed and governed by the Google ecosystem |
| Code ownership | Standard Next.js + Prisma code: ZIP export, GitHub push, free hand-over to any developer | Platform-bound application, no standalone software to take with you |
| Field use | Responsive web application, also tested at phone width; it requires a connection | Mobile field work by design, with offline capture — one of its strong points |
| Structural cost | €0 / €25 / €149 per month, credits shown before generating, no per-user cost | A model tied to usage and to the organisation's accounts |
When AppSheet is the right choice
- Your data already lives in Google Workspace and you want an application on top of it, with no migration and no disruption.
- Your teams enter data in the field, sometimes with no network: offline capture is a genuine AppSheet strength, and an acknowledged limit of the web application we generate.
- Your organisation wants centralised governance inside the Google ecosystem: same accounts, same rules, same administration as everything else.
- The need is first to enter more cleanly what you already enter, rather than to restructure a business the spreadsheet can no longer hold.
When Blueprint Maker is the right choice
- Your business has objects that talk to each other — orders and lines, customers and deadlines, stock and movements — and the spreadsheet simulates it by copying.
- You don't want your management tool to depend on an ecosystem: exportable code, free hosting, hand-over possible to any developer.
- You want to avoid a cost that grows with the team: here you pay for generation, not for users.
- You want to see what will be built before it is built: the plan — entities, relations, screens, indicators — is shown to you and can be corrected.
Frequently asked questions: Blueprint Maker vs AppSheet
Can Blueprint Maker start from my Excel file or Google Sheet?
Not as its foundation: the application is generated from your description, with its own relational database. You can however import your existing data afterwards. The difference is deliberate — the structure is rethought, not just an interface laid on top.
Does the generated application work without a connection?
No. It is a web application served at an address: it opens in a phone browser just as on a computer, but it needs a connection. If your need is offline capture in the field, that is a point where AppSheet answers better, and we would rather say so.
Does it integrate with Google Workspace?
No, no native integration is generated: that is AppSheet's own advantage. Since the code is exportable and standard, a developer can connect what you need, but it does not come out of the generation.
What happens if we change ecosystem later?
Your application doesn't move: it is independent standard software, it keeps working as is and can be hosted elsewhere. That is precisely what you gain by not being inside an ecosystem — and what you give up in native integration.