last updated · 19 july 2026
The short version: SUMI TYPING keeps everything on your own device. There are no ads, no analytics trackers, and no telemetry, and we never sell or share personal data. The one optional feature that involves any personal data at all is Sign in with Google — used only if you want your best runs on the global leaderboard. If you never sign in, nothing about you leaves your browser.
To be usable, the game saves a small amount of data locally in your browser storage
(localStorage). It never leaves your device and is never sent to us:
You can erase all of it at any time by clearing this site's data in your browser.
Signing in is never required — as a guest, everything stays local. If you choose Sign in with Google (to join the global leaderboard and keep one profile across machines), Google asks for your consent and sends us a verified sign-in token containing a limited profile:
We request only the basic openid, email, and
profile scopes — the minimum needed to sign you in and show your name.
We never see your Google password, and we cannot access your Gmail, contacts, Drive,
or any other Google service.
When you finish a run while signed in, the result — mode, words per minute, accuracy, and a timestamp — is submitted to the global leaderboard under your account. Your display name and picture are then publicly visible on that board. If you'd rather not appear publicly, simply play as a guest.
A session cookie keeps you signed in. It holds only an opaque random identifier — no
personal data, no cross-site tracking — is marked HttpOnly and
Secure, and lets the server recognise your browser until you sign out
or it expires.
The sign-in and leaderboard run on a small serverless backend hosted on Cloudflare (Workers, with D1 and KV storage), which processes this data on our behalf as a service provider under its privacy policy. Authentication itself is provided by Google under Google's privacy policy. We use this data for nothing beyond running your account and the leaderboard.
SUMI TYPING is a typing game for general audiences and collects nothing from anyone by default. The optional sign-in relies on your Google account, so Google's own age and account rules apply. We do not knowingly create accounts for children.
The downloadable desktop edition of SUMI (including the planned Steam release) has no accounts, no sign-in, and makes no network calls of its own — it collects nothing. Steam-platform data (playtime, achievements, cloud saves) is processed by Valve under Valve's privacy policy.
If this policy changes, we will update this page and its "last updated" date. Any feature that processes data will remain opt-in and clearly disclosed.
Privacy questions or deletion requests: johnakcuts@gmail.com