Synchro Seconds · com.ignaciocabeza.synchroseconds
Privacy Policy
Last updated 8 September 2026
Synchro Seconds has no accounts, no sign-in, no ads and nothing to buy. It never asks who you are and has no way of finding out. What it does send is timing: how far off each of your taps was, and what your finger did on the way there.
The short version
- No name, email, phone number, contacts, location, photos or files.
- No advertising ID, no Android ID, no hardware identifier — and no advertising or analytics SDK of any kind in the app.
- A random ID is generated on your phone the first time the game runs, so runs from one install can be read together. It is not derived from your device and means nothing anywhere else.
- Nothing is sold, and nothing is shared for advertising.
- Runs are deleted automatically 90 days after they arrive.
What stays on your phone
Your best score on each level, which levels are unlocked, your timing calibration and whether you have seen the opening sequence are stored in the app’s own storage on the device. They are never sent anywhere, and uninstalling the app removes them.
What the game sends
When a run ends — whether you finished it, quit it, or the phone took the app away mid-level — the game queues a trace and sends it to a server I run. If the phone is offline, or the send fails, the game carries on exactly as it is; nothing about playing depends on it.
| What | Why it is there |
|---|---|
| A random per-install ID | So runs from one install can be read as a sequence rather than as unconnected rows. Generated on your device, stored only in the app. |
| Device model, OS version, screen refresh rate, audio buffer size | Phones differ by tens of milliseconds in audio and touch latency. This is what makes a timing complaint answerable. |
| The level played, its revision, the app version | A run has to be read against the board it was actually played on, not the board that level has since become. |
| Your calibration offset, in milliseconds | An offset cannot be interpreted without the correction that produced it. |
| How the run ended — completed, quit, or interrupted | Where people stop is the single most useful thing to know about a level. |
| For each shape: its id, when it was due, how far off your tap was in milliseconds, the band it landed in, and the points | This is the measurement the whole game is tuned on. |
| The touch trace: where your finger was on the play area during the run, and when — presses, drags, releases | A missed shape and a mistimed one look identical in a score and completely different in a trace. Positions are within the game board only; the game cannot see anything outside its own window. |
No IP address is stored with a run. As with any website or server, the hosting provider handles your IP address in order to route the request.
What it is used for
Tuning the game, and nothing else. The windows a tap is judged against are tens of milliseconds wide, and whether a level is fair or merely hard is a question only real traces can answer. It is not used to build a profile of you, not used for advertising, and not passed to anyone for either purpose.
Who else is involved
- Google Play distributes the app and handles its updates. Google’s own privacy policy covers that, including anything the Play Store itself collects.
- Railway hosts the server and its database, in which the traces are stored.
- Vercel serves this website.
There is no fourth party. No analytics service, no crash reporter, no advertising network and no data broker receives anything.
How long it is kept
Runs are deleted automatically once they are 90 days old. Deleting a run deletes everything hanging off it — every tap and every touch — in the same operation.
Stopping it, and deleting what is there
Uninstalling the app stops it completely. The random ID lives in the app’s storage and goes with it; installing again produces a new one that cannot be connected to the old.
Anything already sent is deleted on the 90-day schedule above without you doing anything.
If you want an install’s data removed sooner, write to me and I will delete it. Anonymity cuts both ways here: because the ID is random and tied to nothing about you, there is no way to look your data up from your name or email address — a request has to carry the install ID for me to find anything.
Children
Synchro Seconds is not directed at children, and collects nothing that could identify anyone of any age.
Changes
If what the game collects changes, this page changes with it and the date at the top moves. The date is the whole changelog.