fak10
Anna takes care of the tedious paperwork
Your bike is gone, and nobody ever read the policy. You say: “Computer, do it.” Anna knows home contents pays and liability doesn't, knows the link to the claim form and fills it in for you. You check every field and approve. That's it.
Finally an assistant that knows you and can fill in every form for you
NameAddressReceiptIBAN
Anna fills it in, and you see every field before it goes out. Secrets like your IBAN you release one by one.
What fak10 does for you
An AI chat forgets, or remembers on someone else's servers.
fak10 stays on your phone and puts what it knows to work for you.
Forms from what Anna knows
You check, you sign.
- The flat application, with every detail.
- Let Anna read and file your tenancy agreement.
- Keep your IBAN secret, masked when filling in.
Reach your goals faster
Anna keeps track of what matters to you.
- The notice period, before it lapses.
- “When was my last tetanus shot?”
- What does my sister like? Ideas from what you've told Anna.
The big picture, not a racing mind
Everything in one place, every entry with source and date.
- “What did I agree with the plumber?”
- Who is who: Anna shows how someone is connected to you.
- How you're doing: feelings today, needs over weeks.
Three promises
While everything moves to the cloud, fak10 stays with you.
Does Anna work offline?
Anna understands language through her own grammar, right on your phone, even offline.
She doesn't guess: if she doesn't understand something, she asks.
When does data leave my phone?
For a long document you can bring in a big AI.
Beforehand you see exactly what leaves your phone, and nothing else does.
Do I need an account?
No sign-up, no server stores your data.
What you tell fak10 belongs to you.
Your data never leaves fak10 unencrypted.
You decide what stays private and what you share. You can keep your paperwork in order without handing over your whole life.
Anna is thirty
At sixteen, I began building Anna in Excel. An@lyse was more than the name hidden in the file: its tables for different word types laid the groundwork for a grammar based micro-AI. Searching those tables could return the metadata Anna needed to understand how a word worked in a sentence. Today I'm using the big AI to build the small one I always wanted.
Read the whole story →
I’m Maciek Niemczyk, a musician and computer scientist from Hamburg. As a senior full-stack software developer with a diploma in business informatics, I’m building fak10. I also play guitar and bass, compose and produce my own music.
My website · LinkedIn · GitHub
- 1996 · aged 16: the first Excel sheet, Anna gets her name
- 1999 ·
An@lyse.xls, the oldest surviving version: needs as a tree, each with a value and a priority - Summer 2009 · “Annalyse” in Java: Anna learns grammar
- 2010 · diploma thesis on similarity: when are two entries the same thing?
- 2017 · your-life: Anna as a module of a web app
- 2021 · fak10
- today · Anna learns language, rule by rule, in German and English
Anna versus the big AI
Anna asks when she doesn't understand. I measure what she gets right, what she misses and what she gets wrong. Every result stays visible.
As of 7 October 2026: Anna meets 15 of 17 expectations, with 0 false entries and 14 follow-up questions. The cloud AI was last measured on 29 September, on 15 expectations: 11 met, 1 false entry. The different test versions are documented in the benchmark.
Assistant without an account · fak10 and ChatGPT
To the benchmark →Do I have to tell Anna everything?
No. The most important bit first: introduce yourself in the first conversation and import your CV under “Forms”. After that Anna can already place a lot, and the “Dimensions” tab gives you an overview of your life. Whatever she's still missing, she asks for.
Importing uses the big AI and costs credits. Because your content never passes through our servers, we can't count along. So before each call we reserve the maximum the app shows you beforehand. Once the bill from Amazon Bedrock arrives, after about 20 minutes, we credit the unused part back to you.
The beta starts on iPhone. It is for your own everyday paperwork; it is not a shared team workspace.
Want in earlier? Save your spot: starts 11 Nov.
Be there when fak10 launches
One email when fak10 is out. Maybe one before, when Anna learns something new. No tracking of who opens what. Unsubscribe any time.
How does it feel to you?
I'm teaching Anna what feelings are. So I'm asking people: 16 feelings, two questions each, about three minutes, anonymous. At the end you'll see your own feelings map.
Take the feelings survey