Build and animate 3D mathematical surfaces offline
About this app
Create 3D mathematical surfaces from formulas and view them as interactive OpenGL animations.
Define surfaces as z(x, y), z(r, phi), r(theta, phi), or parametric x(u, v), y(u, v), z(u, v). Use the time variable t to animate formulas, combine multiple surfaces in one scene, and start from built-in examples such as waves, a pulsating sphere, a cylinder, and a Moebius strip.
The app includes a custom math keyboard, local function storage, color selection, surface grid controls, rotation sensitivity settings, and graph orientation controls.
Privacy and offline use:
The app does not request network access. It does not include ads, analytics, tracking SDKs, account sign-in, or external API calls. User-defined functions and settings are stored on the device. If Android system backup is enabled on the device, app data may be included in that backup by the operating system.
Licensed under MIT, by NVlad1.
What's New in v1.5.0
Imported from the F-Droid repository index.
- Changes since 1.4.1:
- - Added a Free graph screen orientation option
- - Added a reset button for animation time
- - Fixed function editor state after screen rotation
- - Added a monochrome launcher icon for themed Android icons
- - Updated target SDK to 37
Version history
Jul 6, 2026 · 2.4 MB · Android API 26–37 · code 26
Imported from the F-Droid repository index.
- Changes since 1.4.1:
- - Added a Free graph screen orientation option
- - Added a reset button for animation time
- - Fixed function editor state after screen rotation
- - Added a monochrome launcher icon for themed Android icons
- - Updated target SDK to 37
SHA-256 addb21a55a290c6623d71f7fded60039f8d631d9edba3fcbb551a80d6ab4e755
Apr 20, 2026 · 2.4 MB · Android API 26–36 · code 25
Imported from the F-Droid repository index.
SHA-256 aaf6a5e9d68fbb432f6945f16735c3935c091b6b23eb5630928624e77676ea62
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
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 io.github.nvlad1.function3danimator 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, 1.4.1 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall 3D Geometry Animation 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 3D Geometry Animation, and a listing is removed when the evidence for it stops holding up.
Get 3D Geometry Animation
Every source we list for io.github.nvlad1.function3danimator 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
addb21a55a290c6623d71f7fded60039f8d631d9edba3fcbb551a80d6ab4e755
Signing certificate
c64e0dfd803b71ea23f5d377c27e2dad9abc31eeedb4b187ac7ff234a5f59660
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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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