This free tool helps students calculate significant figures for numbers, including rounding and scientific notation. It offers a simple interface for quick and efficient mathematical work.



204+ iOS apps curated and reviewed
If you already know Sig Figs Calculator, this is the deeper bench. 204+ sig figs calculator apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of June 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 3.0★ (2) | No | No | May 2026 | ||
| 2 | Free | — | No | No | May 2026 | ||
| 3 | Free | 4.8★ (31) | No | No | May 2026 | ||
| 4 | Free | 4.7★ (1.7M) | Yes | Yes | Sep 2026 | ||
| 5 | Free | 4.9★ (34K) | Yes | Yes | Sep 2026 | ||
| 6 | Free | 4.5★ (126K) | Yes | Yes | Sep 2026 | ||
| 7 | Free | 4.7★ (25K) | No | Yes | Sep 2026 | ||
| 8 | Free | 4.8★ (3.6K) | No | No | Sep 2026 |



This free tool helps students calculate significant figures for numbers, including rounding and scientific notation. It offers a simple interface for quick and efficient mathematical work.









Master significant figures with this educational tool. Learn the rules, practice identifying sig figs in measurements, and apply them to calculations involving multiplication, division, addition, and subtraction. It helps determine the correct way to report final answers.