247+ iOS apps curated and reviewed
The best respiratory apps on iPhone average 4.1★ across 247+ titles — we've ranked them by what real users actually keep on their phones. Updated September 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.8★ (9) | No | No | May 2026 | |
| 2 |  | Free | 4.6★ (55) | Yes | Yes | Jul 2026 | |
| 3 |  | Free | 5.0★ (8) | No | Yes | Jul 2026 | |
| 4 |  | Free | 5.0★ (45) | No | No | Jul 2026 | |
| 5 |  | Free | — | No | Yes | Aug 2026 | |
| 6 |  | Free | 4.7★ (95) | No | No | Aug 2026 | |
| 7 |  | Free | 4.0★ (4) | Yes | Yes | Aug 2026 | |
| 8 |  | Free was $2.99 | 5.0★ (2) | No | Yes | Jun 2026 |
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.
This portable guide offers rapid access to vital respiratory procedures, facts, and formulas, emphasizing critical care. It serves as a clinical resource, study tool, or quick refresher with a full-color design and fast-access charts for essential information.
A rapid, offline reference tool for respiratory therapists and critical care clinicians. It offers numerous calculators, a guide to ventilator modes, and an AI-powered blood gas interpreter to aid in patient assessment and management.
