Privacy Policy — Hacker Keyboard
Last Updated: 2026-08-05 · Effective Date: 2026-08-05
1. Who we are
Hacker Keyboard is built and published by MobileByteSensei, an independent software studio based in India ("we", "us", "our"). This policy explains what Hacker Keyboard does and does not do with your information on Android and iOS.
Hacker Keyboard has two parts, and the distinction matters for your privacy:
- The keyboard itself — the on-screen keyboard you type on. It has no network access and sends nothing anywhere.
- The companion app — where you browse themes, pick your own photo, customize the look, and buy the one-time upgrade. This part does use the network, for the purposes described below.
Contact: mobilebytesensei@gmail.com
2. The short version
- What you type is never collected, stored, or transmitted. Not by us, not by anyone.
- Your photos never leave your device. A photo you choose as a keyboard background is copied into the app's own private storage and used only to draw your keyboard.
- No account. You never create one, and we never ask for your name, email, or phone number.
- No ads. No advertising identifiers. No data selling.
- The companion app does collect anonymous usage analytics (which screens are opened) so we can see which features people use. Details in §4.
3. What you type
The keyboard reads your keystrokes only to insert them into whatever app you are typing in. That is the entire purpose and the entire scope.
- Keystrokes are not logged, not stored, not buffered to disk, and not transmitted.
- There is no learned-word dictionary, typing history, autocorrect corpus, or clipboard capture.
- On iOS, the keyboard runs without the "Full Access" permission. This is a structural guarantee, not a promise: iOS denies network access entirely to a keyboard extension that does not request Full Access, so the keyboard is technically incapable of sending your typing anywhere.
- On Android, the keyboard makes no network calls.
4. Data we collect
| Data | Purpose | Legal basis (GDPR) | Where it goes | Retention |
|---|---|---|---|---|
| Screen views (which screens of the companion app are opened) | Understand which features are used, so we improve the right things | Legitimate interests (Art. 6(1)(f)) | Google Firebase Analytics | Per Google's retention settings, max 14 months |
| Approximate region / device model / OS version (collected automatically by the analytics SDK) | Aggregate diagnostics and compatibility | Legitimate interests | Google Firebase Analytics | As above |
| Crash reports (stack trace, device state at the moment of a crash) | Find and fix crashes | Legitimate interests | Google Firebase Crashlytics | Per Google's retention settings, max 90 days |
| Purchase status (whether the one-time upgrade is owned) | Unlock the features you paid for; restore purchases on a new device | Contract (Art. 6(1)(b)) | Google Play Billing (Android) / Apple (iOS) | While your store account holds the purchase |
| Your theme settings and chosen photo | Draw your keyboard the way you configured it | Contract | Stays on your device only | Until you change it or uninstall |
We do not collect: your name, email, phone number, contacts, precise location, advertising ID, keystrokes, typed content, messages, clipboard content, photos, or files.
Analytics is not linked to your identity. We do not create user profiles, and we cannot connect analytics events back to a person.
5. On-device versus network
| Part of the product | Network access |
|---|---|
| The keyboard (Android IME / iOS keyboard extension) | None |
| Companion app — themes, customize, own-photo | None for these features; images are bundled or local |
| Companion app — analytics | Sends screen-view events |
| Companion app — crash reporting | Sends a crash report only when the app crashes |
| Companion app — the one-time upgrade | Talks to Google Play / Apple to process and verify the purchase |
Your photo and your typing sit entirely inside the first two rows.
6. Third parties
| Service | Provided by | What it receives | Their policy |
|---|---|---|---|
| Firebase Analytics | Anonymous screen-view events and coarse device info | https://firebase.google.com/support/privacy | |
| Firebase Crashlytics | Crash stack traces and device state, only when the app crashes | https://firebase.google.com/support/privacy | |
| Google Play Billing | Purchase transaction for the one-time upgrade (Android) | https://policies.google.com/privacy | |
| Apple In-App Purchase | Apple | Purchase transaction for the one-time upgrade (iOS) | https://www.apple.com/legal/privacy/ |
We do not embed advertising networks, attribution SDKs, social login, or third-party trackers.
7. Permissions and why
| Permission | Platform | Why |
|---|---|---|
| Photo selection | Android / iOS | Only when you tap "Use my own photo". We use the system picker, which returns just the one image you choose — we never request broad access to your photo library or files. |
| Internet | Android | Used by the companion app for analytics and purchase verification. The keyboard does not use it. |
| Keyboard / input method | Android / iOS | Required for any keyboard to function. Enabling a keyboard is an explicit action you take in system settings. |
We do not request: contacts, location, microphone, camera, SMS, call logs, or "Full Access" on iOS.
8. How we use information
Only to: draw your keyboard as you configured it; unlock and restore what you purchased; and understand in aggregate which features are used. We do not profile you, target you, or make automated decisions about you.
9. Data sharing and selling
We do not sell your personal information, and we do not share it for cross-context behavioural advertising. The only recipients are the processors in §6, acting on our instructions to run analytics and process payments.
10. Your rights
Because we hold no account and no identifiable data, the fastest way to remove everything associated with you is to uninstall the app — your settings and any photo you chose are deleted with it. For anything else, contact mobilebytesensei@gmail.com and we will respond within 30 days.
EEA / UK (GDPR, UK GDPR). You have the right to access, rectify, erase, restrict, port, and object to processing of your personal data, and to withdraw consent where processing relies on it. Our lawful bases are stated in §4. You may lodge a complaint with your national supervisory authority. Analytics is based on legitimate interests; you may object by contacting us.
California (CCPA / CPRA). You have the right to know what we collect, to delete it, to correct it, and to opt out of sale or sharing — we do not sell or share, so there is nothing to opt out of. You will never be discriminated against for exercising these rights.
Canada (PIPEDA) · Brazil (LGPD) · Japan (APPI) — you have equivalent rights of access, correction, and deletion. Other regions — if your local law grants you rights over your data, we honour them; write to us.
11. International transfers
Our analytics and payment processors (Google, Apple) operate globally and may process data outside your country, including in the United States, under their own safeguards such as Standard Contractual Clauses. Nothing you type and no photo you choose is ever transferred anywhere.
12. Children
Hacker Keyboard is not directed at children under 13 (or under 16 in regions where that is the threshold). We do not knowingly collect personal information from children, and the app contains no child-directed content or advertising. If you believe a child has provided us information, contact us and we will delete it.
13. Security
Your settings and any chosen photo are stored in the app's private, OS-protected storage, which other apps cannot read. Network requests made by the companion app use encryption in transit (HTTPS/TLS). Because we never receive your typing or your photos, there is no server-side store of them to breach.
14. Retention and deletion
- On-device data (settings, chosen photo) — kept until you change it or uninstall the app.
- Analytics — retained by Google for at most 14 months, then deleted automatically.
- Purchase records — held by Google Play or Apple as part of your store account, not by us.
15. Changes to this policy
If we change what the app collects, we will update this page and move the "Last Updated" date. Material changes will be highlighted in the app or its store listing.
16. Contact
MobileByteSensei — mobilebytesensei@gmail.com
For privacy requests, please put "Privacy" in the subject line so we can route it quickly.