A simple educational practice game for kids (and adults).
About this app
Primary is a slightly gamified educational application aimed at Primary (Elementary) school-aged children, but of course adults who wish to sharpen their skills will find it useful as well. There are levels dealing with basic math, sorting, clocks, spelling, plurals, etc., with new subjects planned for the future.
See the website for a full list of subjects and features.
Licensed under GPL-3.0-or-later.
What's New in v0.3.3
Imported from the F-Droid repository index.
Version history
Aug 22, 2018 · 2.1 MB · Android API 19–28 · code 33
Imported from the F-Droid repository index.
SHA-256 20fadeb3ca5b73afa694bd18be027f0d8c7bf169faea7d99a6bfd9e8f5887c92
Oct 18, 2017 · 2.1 MB · Android API 19–25 · code 32
Imported from the F-Droid repository index.
SHA-256 553b30742ba0c83c0ab2d34668d6c0f70160bd8d893f4beaaf727798a044b673
Jul 18, 2017 · 2.1 MB · Android API 19–25 · code 31
Imported from the F-Droid repository index.
SHA-256 296abe53e07db1c1c143edd708204608ca8eee8b2e12831b6a6b6f1305c3c445
Will it run on your device?
73%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be com.quaap.primary is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 0.3.2 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Primary first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Primary, and a listing is removed when the evidence for it stops holding up.
Get Primary
Every source we list for com.quaap.primary is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
20fadeb3ca5b73afa694bd18be027f0d8c7bf169faea7d99a6bfd9e8f5887c92
Signing certificate
8edc531b96b47359a86968b4b411fb772f62da80ca9ecf847a9c97714104f8bc
Permissions Required
What each permission lets Primary do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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