SoftPlus Options vs VAT Calculator
Side-by-side comparison of two open source alternatives
SoftPlus Options
Offline-first, privacy-focused options payoff and volatility surface simulator. Explore payoff diagrams for any option combination interactively using the Softplus pricing model (a quick and dirty approximation that avoids Black-Scholes rigidity). Markets are uncertain — no model is the ultimate truth. That’s why this app is built for play and intuition: tweak the volatility surface and instantly see how shocks, skew changes, term-structure shifts, or full volatility regime changes affect your strategy. Features: - Financial modeling of option prices linked to an interactive volatility surface. - Navigate and stress-test strategies across realistic market volatility scenarios. - No tracking, no data ever leaves your machine.
VAT Calculator
Calculate VAT for any country in the world
| Feature | SoftPlus Options | VAT Calculator |
|---|---|---|
| License | GPL-3.0-only | MIT |
| Install sources | F-DroidGitHub | F-DroidGitHub |
| Categories | ProductivityFinance | ProductivityFinance |
| Features | Ad-FreeOpen SourceNo Tracking | Ad-FreeOpen SourceNo Tracking |
| Platforms | Android | Android |
| Website | ||
| Source code |