70+ iOS apps curated and reviewed
Visual Blood Gas Calc is the household name in blood gas, but it's far from the only option. We track 70+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | Jun 2026 | |
| 2 |  | Free | 5.0★ (3) | No | No | Jul 2026 | |
| 3 |  | Free | 4.8★ (9) | No | No | May 2026 | |
| 4 |  | Free | 4.0★ (1) | Yes | No | Aug 2026 | |
| 5 |  | Free | 5.0★ (3) | No | No | May 2026 | |
| 6 |  | $2.99 | 4.0★ (48) | No | No | Aug 2026 | |
| 7 |  | Free | 4.6★ (7) | No | No | May 2026 | |
| 8 |  | Free | 4.9★ (71) | No | Yes | Sep 2026 |
This clinical calculator estimates arterial blood gas values using venous blood gas measurements. It applies formulas derived from a large dataset to provide useful estimates of arterial pH, pCO₂, and HCO₃⁻.
This medical tool provides accurate and flexible acid-base analysis for healthcare professionals. It offers detailed explanations, customizable ranges, and advanced features like anion gap correction and A-a gradient adjustments for various patient conditions and locations.
