A simple math expression evaluator.
About this app
The program takes in mathematical expressions and evaluates them. Its a little bit more useful then a common calculator in that it handles variables. The look and feel is more towards a programming language. Simplified version of MathCad or Linux octave.
Example input:
apple = 12, orange = 7 (apple/2 + orange)*10
Example output:
130.0
Licensed under PublicDomain.
What's New in v1.2
Imported from the F-Droid repository index.
- Got rid of the privacy warning about app being too old and deemed incompatible with newer phones.
Version history
May 29, 2025 · 0 MB · Android API 27–36 · code 102
Imported from the F-Droid repository index.
- Got rid of the privacy warning about app being too old and deemed incompatible with newer phones.
SHA-256 f6bb213002a5fa0d917fa4058f7ea9086399ac0ac2f5d91b2488294e7fbc8d73
Feb 11, 2015 · 0 MB · Android API 10–17 · code 101
Imported from the F-Droid repository index.
SHA-256 7fa6d242e9fbe6d66331d69cce871ecb3bd9b1436040bc4c69502a5034c544b0
Will it run on your device?
60%
- Targets newer Android builds, so legacy devices may be excluded.
- ABI coverage is focused on newer 64-bit devices.
- 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 dudeofx.eval 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, 1.1 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Expression Evaluator 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 Expression Evaluator, and a listing is removed when the evidence for it stops holding up.
Get Expression Evaluator
Every source we list for dudeofx.eval 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
f6bb213002a5fa0d917fa4058f7ea9086399ac0ac2f5d91b2488294e7fbc8d73
Signing certificate
9a76b533eddfc949a3201aa3945b370d84a7defe86eaba391950f06db97f0f56
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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