We make games, useful AI, apps and typefaces.

Partech Systems is a small independent studio. We ship our own products: small games, calm apps, typefaces, and AI apps that run on your phone.

New · play Cipher Post now
Cipher Post title screen, an airmail envelope with a stamp and a line of code letters
Free, right in your browser. No download.
Games Studio

8 small games. Pick one and play.

Short, calm games for a spare minute. Every one plays free in your browser, with nothing to install. Cipher Post is up top; here are the rest.

All 8 games
AI Studio

AI that earns its place.

Small apps where the AI is the whole point: one useful job, done on your phone. We're building them one at a time, and we'll say plainly when each is ready.

See AI Studio
In development Plain Photograph a confusing letter. Plain tells you what it says, what you need to do, and by when.
App Studio

A calmer way to pray each day.

Hindu Prayers opens with the day's deity and prayer, reminds you by name, and works in seven Indian languages, with the panchang, festivals and kundali matching built in.

Get it on Google Play All apps
The Today screen of Hindu Prayers
Font Studio

8 typefaces. Try them here.

Sans, serif, slab, condensed, rounded and coding fonts, each with a variable weight axis, hinting for small sizes and every European language.

See all typefaces Licensing
Quiet fox, bright code
Journal

Notes from the studio

Read all articles →
Five phrases that hide a deadline in an official letter
· Bhaskar Paratey

Five phrases that hide a deadline in an official letter

The date you need is often not in the first paragraph, and sometimes not a date at all. Five phrases in official letters that quietly set a deadline, and what each one really means.
We're building Plain
· Bhaskar Paratey

We're building Plain

Official letters are written for the people who send them. We're building an app for the people who receive them. Here's what Plain is, what it isn't, and why it isn't finished.
The customer is the daughter, not the mother
· Dimple Paratey

The customer is the daughter, not the mother

Almost every AI product sold for older people is really sold to their adult children. Once you notice that, you can't unnotice it — and it explains why so much of it feels wrong to the person it's aimed at.