247+ iOS apps curated and reviewed
Stoichiometry is the household name in stoichiometry gas phase, but it's far from the only option. We track 247+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | $2.99 | — | No | No | Jul 2026 | |
| 2 |  | $3.99 | — | No | No | Aug 2026 | |
| 3 |  | Free | — | No | No | Sep 2026 | |
| 4 |  | Free | 5.0★ (4) | No | Yes | Jul 2026 | |
| 5 |  | Free | — | No | Yes | Sep 2026 | |
| 6 |  | $0.99 | 5.0★ (2) | No | Yes | Oct 2026 | |
| 7 |  | Free | 3.7★ (3) | No | Yes | Nov 2026 | |
| 8 |  | Free | — | No | Yes | May 2026 |
This tool helps balance chemical reactions and calculate molar masses, moles, and actual masses of reactants and products. It supports various formula formats and can identify limiting reagents. Data can be sent to another app for gas phase calculations.
