Effective 26 September 2026 · app ID com.bowlbrain.bowleru
The short version
Your training progress stays on your phone. We do not upload it.
We show no ads and use no third-party advertising or analytics trackers.
BowlerU sends anonymous usage counts to our own analytics service (which screens and features get used, how many days since install). No personal data, no identifier, nothing about your game. You can switch it off in Settings.
We never sell your data and never share it for advertising.
Connecting The Ballroom is optional. It lets BowlerU read your own locker (your bag, patterns, games, spares) and, only if you switch it on, send your practice summaries back.
Reminders are on-device notifications. Turn them off any time.
BowlerU ("the app", "we", "us") is a bowling lane-reaction trainer published by MunkinFactory as part of the BowlBrain suite. This policy explains what the app does and does not do with your information. It applies to the BowlerU mobile application on Android and iOS.
1. Information stored on your device
Everything you do in BowlerU by default is stored locally on your device using the operating system's app storage. This includes:
your training progress — level, rating, streaks, career stats, shot history, exam scores, and your game-mode records (daily challenge results, best runs and blocks, and your own saved best block used for the ghost race);
your settings and preferences — handedness, difficulty, reminder times, and toggles.
This data never leaves your device unless you take a specific action described below. We cannot see it, and there is no BowlerU account or login.
2. Connecting The Ballroom optional
BowlerU can optionally link to The Ballroom, the companion app in the BowlBrain suite where you keep your equipment and scores. Linking is entirely your choice and the app is fully usable without it.
How the link works
You generate a short-lived connect code in The Ballroom and enter it in BowlerU.
BowlerU exchanges that code for a secure access token, which is stored on your device.
Using that token, BowlerU reads your Ballroom locker — your ball arsenal, oil patterns, recent games, and spare-leave stats — over an encrypted (HTTPS) connection, so drills and ball recommendations reflect your real game.
What this means for your data
By default the connection is read-only: the app pulls your data in and changes nothing in your Ballroom account.
Practice sync (optional, off by default): if you switch on Send my practice to The Ballroom and your connection includes the write:practice permission, BowlerU sends a summary of each practice set — shots, strikes, pocket hits, carry %, average entry board and angle, the moves you made, the pattern and ball names, and the simulated lane conditions — to your Ballroom account, labelled as simulator practice. You and any coach you have shared your games with can see it there. Switch it off any time in the same place.
The Ballroom is operated by the same developer (BowlBrain / MunkinFactory). Your Ballroom data is handled under The Ballroom's own privacy policy. We do not share it with unrelated third parties.
You can disconnect at any time in Setup › The Ballroom › Manage, which revokes the token on your device. Your on-device training progress is unaffected.
If you use "Try with sample data" instead of linking, BowlerU loads a built-in demo bag and demo patterns. No account, no network request, no personal data is involved.
3. Notifications
If you enable reminders, BowlerU schedules local notifications on your device to nudge you to practice. These are generated and delivered on-device — there is no push service and we do not collect a messaging or device token to send them. You can turn reminders off in the app or in your device’s notification settings.
4. Anonymous usage stats you can switch it off
To learn which parts of BowlerU are useful, the app sends a few anonymous counts to BowlBrain’s own analytics service (bowlbrain-analytics.vercel.app, operated by us — no third-party analytics company). At most once a day each (getting-started steps only once ever), it reports:
that the app was opened, the platform (Android, iPhone or web) and the app version;
roughly how long ago the app was installed, in ranges (for example “7–13 days”), so we can see whether people come back;
which training modes, screens and features were used, and the previous day’s number of shots as a range (for example “10–29”);
how long the app was on screen the previous day, as a range (for example “5–15 minutes”), and whether the app hit an error that day (with the app version, nothing else);
whether The Ballroom is connected, in sample mode or not connected (never what it holds);
once each, getting-started steps such as finishing the introduction, the first shot, the 10th shot or the first strike;
for a new web player only, once: the name of the site or campaign that linked to BowlerU (for example “reddit”), never the page address.
These counts carry no name, account, advertising ID or stored device identifier, and nothing about your shots, scores or settings. To count daily visitors without identifying anyone, the service computes a one-way hash of the connection’s IP address and browser signature that changes every day; the IP address itself is never stored. The service also records the country (from the connection) and the device type. Counts are kept for about 400 days, only in aggregate.
Turn it off any time in Settings › Share anonymous usage stats; nothing is sent after that.
5. What we do not collect
No name, email, phone number, or address is required by or collected in BowlerU.
No precise location data (only the country, as part of the anonymous counts above).
No advertising identifiers, and no third-party advertising or analytics SDKs.
No contacts, photos, microphone, or camera access.
6. How your data is protected
On-device data is protected by the operating system’s standard app sandboxing (the Android app sandbox on Android, Data Protection on iOS).
The optional Ballroom connection uses encrypted HTTPS transport.
Because your progress lives on your device, uninstalling the app removes it.
7. Your choices and controls
Disconnect The Ballroom:Setup › The Ballroom › Manage › Disconnect revokes the stored token.
Delete your training data: clearing the app’s storage in Android settings, or deleting the app on iOS, erases all local progress.
Stop practice sync: untick Send my practice to The Ballroom in Setup › The Ballroom.
Stop reminders: turn off notifications in the app or in your device’s settings.
8. Children
BowlerU is a general-audience training tool and is not directed at children under 13. We do not knowingly collect personal information from children.
9. Changes to this policy
If we change how the app handles data, we will update this page and revise the effective date above. Material changes will be reflected in the app's store listing.