250+ iOS apps & games curated and reviewed
Out of 250+ gammon api gravity calculator apps and games on iOS, 13 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | $9.99 | 4.0★ (8) | No | No | Jun 2026 |
| 2 |  | $9.99 | — | No | No | Aug 2026 |
| 3 |  | Free | 5.0★ (2) | No | No | May 2026 |
| 4 |  | Free | 4.6★ (5.1K) | Yes | No | Sep 2026 |
| 5 |  | $2.99 | — | No | No | May 2026 |
| 6 |  | Free | 4.8★ (1.9K) | Yes | No | Aug 2026 |
| 7 |  | Free | — | No | No | May 2026 |
| 8 |  | $24.99 | 4.6★ (299) | No | No | Sep 2026 |
Calculate corrected API gravity for jet, gasoline, and diesel fuels at 60°F. This digital tool also determines the total weight of the fuel, replicating the functionality of physical slide calculators.
Measure the G-force experienced in elevators or planes and compare it to planetary gravity. Record environmental photos, videos, and coordinates to save for later reference, and view G-values on a map.
This app offers a comprehensive suite of over 40 calculators and unit converters for various needs, including finance, health, construction, and everyday math. It features standard, scientific, and specialized calculators for tasks like loan amortization, currency conversion, and material estimation.
This app functions as a scientific calculator, enabling users to input and edit complex formulas with ease. It supports formula history, variable memory, and various number system conversions for accurate calculations.
This app offers a powerful scientific calculator, extensive unit conversion capabilities across dozens of categories, and real-time foreign exchange rates for over 150 currencies. It also includes a world clock and convenient home screen widgets for quick access to its functions.
Calculate the weight and price of various steel types using this professional tool. It offers a comprehensive database of steel models and parameters, saving your calculation history for easy access. Ideal for construction and fabrication professionals.
This app offers a versatile calculator with multiple modes, including scientific, bitwise, statistical, trigonometric, base conversion, and time calculations. It features a simple mode with large buttons and customizable interface. Widgets for notification center and Apple Watch are also included.
This app helps students, teachers, and professionals solve geometry and trigonometry problems. It calculates angles, areas, perimeters, and more for various shapes, providing formulas and steps for learning.
