10+ iOS apps curated and reviewed
NDCalc2 is the household name in ndcalc2, but it's far from the only option. We track 10+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | $0.99 | 1.5★ (2) | No | No | Nov 2026 | |
| 2 |  | Free | 4.3★ (11) | No | No | Oct 2026 | |
| 3 |  | $1.99 | 3.4★ (5) | No | No | Oct 2026 | |
| 4 |  | Free | — | No | No | Oct 2026 | |
| 5 |  | Free | — | No | No | May 2026 | |
| 6 |  | Free | 5.0★ (2) | No | No | Aug 2026 | |
| 7 |  | Free | 3.8★ (6) | No | No | Oct 2026 | |
| 8 |  | Free | — | No | No | Oct 2026 |
Calculate correct exposure times when using ND filters for long exposures. Easily manage your filter collection, add custom filters, and switch between single and multi-select modes for stacking.
Access essential campus information and services on the go. Find maps, course details, faculty contacts, and event schedules. Receive important alerts and news directly to your device.
This utility app assists photographers in determining the correct shutter speed when using neutral density filters. Input your filter's stops and base shutter speed to instantly get the adjusted exposure time, with an optional countdown timer for long exposures.
