Your developer for associations, practices and small businesses
I build your app – and stay your point of contact.
When spreadsheets and WhatsApp groups no longer cut it: your own app for schedules, shifts and members. Fixed price, everything agreed in writing, ongoing support included.
- 70+daily users of my own app
- since 2014projects for clients in Europe and the US
- DE · RU · ENin writing, in your language
Sound familiar?
Which list is the current one?
Three versions of the same spreadsheet, and everyone works with a different one.
Important things get lost in the chat
Yeses, nos and questions disappear among a hundred messages.
Who may see what?
Phone numbers and addresses sit openly in groups where they don't belong.
With an app of your own: one source for everyone, reminders instead of chasing people – and everyone sees only what they're allowed to see.
In use since May 2026
An example: an app for a community
- Before
- Meetings, duties and reports were organised in spreadsheets and chats.
- After
- One app for web and Android: weekly schedule, responsibilities, push reminders. Everyone sees only what they may see; every change can be traced and undone.
- Result
- 70+ daily usersPersonal data encrypted, daily backups with tested restores.
How it works
Everything important is agreed in writing. You can always look up what we agreed – so there are no misunderstandings.
You describe what you need
A few sentences are enough. I reply in writing with questions.
You get a quote
What's included, what isn't – and a fixed price.
You try it as it grows
Step by step, until everything fits. At the end you confirm acceptance.
I stay your point of contact
Hosting, backups, updates and small changes – for a fixed monthly fee.
What does it cost?
Fixed prices instead of open-ended hourly billing: you know the cost before we start.
- First assessment
- Free and in writing, with questions and a rough price range.
- Project
- Fixed price based on a written scope, paid in stages.
- Support
- Fixed monthly fee for hosting, backups, updates and small changes.
About me
I'm Leo Backmann, a developer based in Hamm, Germany. Since 2014 I have built websites, online shops and apps for clients in Europe and the US. Before that I ran my own office-equipment business for six years.
Modern AI tools speed up writing code. What matters is what happens before and after: clarifying requirements, planning the structure, testing the result, keeping it running – the whole process in one pair of hands.
Based in the EU: your data stays on EU servers and under the GDPR.
- Deutsch
- Русский
- English
- in writing
Also
Taking over an existing app
Already have an app – built yourself, with AI or by a previous developer? Review, documentation and reliable operation: server, backups, updates.
Websites and shops
Fast, multilingual websites and online shops.
Tech project: 30sec.org
Real-time game engine for quiz tournaments: synchronised answer reveal, game state survives server restarts. Code on GitHub
Frequent questions
Do you work in writing only?
Yes. I work in writing and asynchronously, so every decision is on record. Contracts are in German under German law.
Who owns the app?
You do. Once paid in full, you receive the code and the documentation.
Am I locked in to you?
No. Every project is documented and built on widely used technology – another developer can carry on with it.
Where is our data stored?
On servers in the EU. Personal data is stored encrypted and backed up daily.
What would you like to make simpler?
Describe in a few sentences how you work today. You'll get a written reply with first questions – no obligation.
Or by email: kontakt@leobackmann.de