20+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our xavier daxhelet list covers 20+ iPhone apps updated through September 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (3) | No | No | Sep 2026 | |
| 2 |  | Free | 4.0★ (8) | No | No | Sep 2026 | |
| 3 |  | $2.99 | 5.0★ (1) | No | No | Sep 2026 | |
| 4 |  | $2.99 | 4.3★ (6) | No | No | Sep 2026 | |
| 5 |  | $1.99 | 5.0★ (2) | No | No | Sep 2026 | |
| 6 |  | $2.99 | 5.0★ (1) | No | No | Sep 2026 | |
| 7 |  | $3.99 | 3.0★ (2) | No | No | Sep 2026 | |
| 8 |  | $0.99 | 5.0★ (1) | No | No | Sep 2026 |
This application calculates the refractive index of transparent materials based on wavelength. It assists optical design engineers and students by computing transmission properties, angles, and critical values. Users can also define custom materials for their calculations.
Access free astronomical data including sunrise/sunset times, planetary positions, and physical characteristics of celestial bodies. View ephemeris for any date and time based on your current location.
This educational app supports high school and university statics and dynamics courses. It offers a comprehensive review of basic equations, accompanied by over 20 animations and 50 illustrations to clarify complex mechanics concepts. Teachers can use it to present material to students via projector.
