Calculator for nerds with variables, syntax highlighting, and file sessions
About this app
NerdCalci is a powerful calculator designed for nerds and power users who need more than basic arithmetic.
Features:
- Offline - Works without internet - Variable support - Define variables and reuse them in calculations - Percentage calculations - Natural syntax like "20% of 50000" or "15% off 1000" - Unit conversions - Natural syntax like "10 m in feet" or "100 kmph to mph" - Calendar-aware date and time engine with timezone support - Custom functions - Define your own functions with multi-statement support and scope isolation - Dynamic variables - Quickly compute block sums (`total`) and averages (`avg`) - Syntax highlighting - Color-coded numbers, variables, operators, and comments - Smart error diagnostics - See human-friendly explanation of math or syntax errors - Auto-completion - Smart suggestions for variable names - Comments - Document your calculations with # comments - Multiple files - Organize calculations in separate files with auto-save - Tags - Organize files with custom tags - Pin files - Keep frequently used files at the top - Search - Search your files easily by name or tag - Duplicate files - Create a copy of a file with a new name - Undo/Redo - Up to 30 steps per file - Backups - Automatically or manually backup your files to app storage or a custom folder - Restore from backups - Restore your files from backups - Copy with results - Copy calculations with their results - Export - Share your calculations as a PNG image or a multi-page PDF - Dark/light theme - System, dark, or light mode support - Line numbers - Easy reference and navigation
Perfect for:
- Quick calculations with reusable values - Budget planning and financial calculations - Unit conversions and formulas - Educational purposes and learning - Any scenario where you need to document and reuse calculation values
NerdCalci combines the simplicity of a calculator with the power of a text editor. As a capable alternative to text-based calculators like Numi, Calca, and Soulver, it is ideal for developers, students, accountants, and anyone who frequently works with numbers.
Licensed under GPL-3.0-or-later, by Vishal Telangre.
What's New in v4.9.3
Imported from the F-Droid repository index.
- - Added `min`/`minimum` and `max`/`maximum` dynamic variables to find the smallest or largest value in the preceding block (Issue: #220).
Version history
Jul 10, 2026 · 2.1 MB · Android API 23–35 · code 493
Imported from the F-Droid repository index.
- - Added `min`/`minimum` and `max`/`maximum` dynamic variables to find the smallest or largest value in the preceding block (Issue: #220).
SHA-256 cc3d130b3c1d926aa4ff926b5c0cb2b80c749e8478725787605d637a1a37e238
Jun 26, 2026 · 2.1 MB · Android API 23–35 · code 492
Imported from the F-Droid repository index.
- - Added support for deriving and converting energy units from power/time combinations (Issue: #209).
- - Fixed the display bug in date results for the Oct/Dec months for the current year (Issue: #215).
SHA-256 766e0e0a575b83235a0a773f5b563cc568734db36d9806fa933109f5bde4fc8f
Jun 24, 2026 · 2.1 MB · Android API 23–35 · code 491
Imported from the F-Droid repository index.
- - Added support to organize files using custom tags and filter them in search (Issue: #212).
SHA-256 7ae576797cc2c049a9e7d94675fca64e25f9be2dcda9114ab0ae0f41a0c4194c
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 com.vishaltelangre.nerdcalci 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, 4.9.2 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall NerdCalci 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 NerdCalci, and a listing is removed when the evidence for it stops holding up.
Get NerdCalci
Every source we list for com.vishaltelangre.nerdcalci 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
cc3d130b3c1d926aa4ff926b5c0cb2b80c749e8478725787605d637a1a37e238
Signing certificate
00472f5642fdf6cc01f84dc3433837f6e4d68398c0741e2f6cfc3f453c73f186
Permissions Required
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.
Report a problem with this listing
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