A simple android app for evaluating JavaScript code in a browser context.
About this app
The author was in need of a more capable calculator app than what's included with Android. After finding none that pleased him he made one himself. Javascript is turing complete, WebViews provide javascript and the eval() function. Thusly JSlab was created.
Licensed under GPL-3.0-only.
What's New in v1.0
Imported from the F-Droid repository index.
- - Initial release. So literally _everything_ was changed!
Version history
Sep 4, 2022 · 3.8 MB · Android API 21–31 · code 1
Imported from the F-Droid repository index.
- - Initial release. So literally _everything_ was changed!
SHA-256 3db5f2165cb77ade6ac8c21f371613906215c437b74517ef9c02ac2fc0aaf7cd
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 eu.dfdx.jslab 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
No earlier build is on record for JSlab, so there is nothing to roll back to yet. When a second version is published, this section will explain how to move between them safely.
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 JSlab, and a listing is removed when the evidence for it stops holding up.
Get JSlab
Every source we list for eu.dfdx.jslab 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
3db5f2165cb77ade6ac8c21f371613906215c437b74517ef9c02ac2fc0aaf7cd
Signing certificate
61d1b60be74ac79e38373497b083f7d79622a956a6ec92aa5a56a118b7fb3e60
Permissions Required
Previous Versions
No earlier build is on record — this is the first release we have listed.
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.