247+ iOS apps curated and reviewed
The best siso calculator apps on iPhone average 4.2★ across 247+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (3) | No | No | May 2026 | |
| 2 |  | Free | 4.0★ (3) | Yes | No | Oct 2026 | |
| 3 |  | Free | 4.7★ (4.8K) | No | Yes | Oct 2026 | |
| 4 |  | Free | 4.6★ (5) | Yes | Yes | Oct 2026 | |
| 5 |  | Free | 4.9★ (9) | Yes | No | Oct 2026 | |
| 6 |  | Free | 4.5★ (793) | No | No | Oct 2026 | |
| 7 |  | Free | — | — | No | Jun 2026 | |
| 8 |  | Free | 1.7★ (3) | No | No | Oct 2026 |
This app helps engineers and students understand System Dynamics and Controls. It offers an intuitive interface to quickly analyze controller and plant interactions in both time and frequency domains.
This app calculates compound interest, showing how investments grow exponentially over time. It differs from simple interest by reinvesting earnings, leading to accelerated asset accumulation. Understand the power of compounding for your financial future.
This app offers a private and accessible calculation experience with no advertisements. It includes scientific, financial, and basic calculation functions, along with features like voice feedback and visual charts for loans and investments.
