NerdCalci vs Wispar
Side-by-side comparison of two open source alternatives
NerdCalci
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" - 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 - Pin files - Keep frequently used files at the top - Search - Search your files easily - 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.
Wispar
Wispar is your personal research companion — a privacy-friendly app for exploring academic journals and scientific articles. Using the Crossref and OpenAlex APIs, Wispar helps you stay updated on your favourite journals. Follow journals to receive the latest research abstracts in your main feed — no account required. - Search scholarly articles and journals - Follow journals to stay updated - Add custom keywords and queries to your feed - Access open-access articles via Unpaywall - Use EZproxy to unlock paywalled research - Chat with AI about your downloaded papers - Send articles to your Zotero library - View graphical abstracts - Translate abstracts to your preferred language - Built for researchers, students, and the academically curious Wispar is user-friendly, open-source, and designed to respect your privacy. As a community-built project, contributions are always welcome! If you'd like to contribute, please visit our GitHub repository: https://github.com/Scriptbash/Wispar If the app isn't available in your language, please consider helping with translations by visiting our hosted Weblate instance: https://hosted.weblate.org/engage/wispar
| Feature | NerdCalci | Wispar |
|---|---|---|
| License | GPL-3.0-or-later | GPL-3.0-or-later |
| Install sources | F-DroidGitHubIzzyOnDroid | F-DroidGitHub |
| Categories | OfficeNotesProductivity | NotesProductivityAI Assistant |
| Features | Ad-FreeOpen SourceNo Tracking | Ad-FreeOpen SourceNo Tracking |
| Platforms | Android | Android |
| Website | ||
| Source code |