250+ iOS apps curated and reviewed
Out of 250+ photonestapp apps on iOS, 19 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 |  | Free | — | No | No | Jul 2026 | |
| 2 |  | Free | 4.4★ (34) | No | No | May 2026 | |
| 3 |  | $2.99 | 5.0★ (1) | No | No | May 2026 | |
| 4 |  | Free | 5.0★ (1) | No | No | Jul 2026 | |
| 5 |  | Free | 4.4★ (7) | Yes | No | Aug 2026 | |
| 6 |  | Free | 5.0★ (1) | No | No | May 2026 | |
| 7 |  | Free | 4.4★ (2K) | No | No | Sep 2026 | |
| 8 |  | Free | 4.8★ (7K) | No | No | Sep 2026 |
This app allows optometrists to easily record their attendance at continuing education courses by scanning QR codes. It sends attendance data to a central database and provides users with a history of their completed courses, including details like title and instructor.
This app calculates photon transmission and attenuation for gamma and x-ray photons. It provides cross-section data for 94 elements, including fluorescence and edge energies. Users can input photon energy and material thickness to determine mean free path, absorption coefficient, and various cross-section values.
