

250+ iOS apps curated and reviewed
Every iPhone needs a few good anion gap calculator apps. We benchmark 250+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | — | Yes | No | May 2026 | |
| 2 | Free | — | No | No | May 2026 | |
| 3 | Free | — | No | No | May 2026 | |
| 4 | Free | 4.8★ (859) | No | No | Aug 2026 | |
| 5 | Free | 4.7★ (579) | Yes | Yes | Aug 2026 | |
| 6 | Free | — | — | No | May 2026 | |
| 7 | Free | — | No | Yes | Jun 2026 | |
| 8 | Free | 1.8★ (5) | Yes | No | Aug 2026 |













This ad-free utility offers a clean and intuitive interface for performing calculations. It includes essential features like a backspace button and support for parentheses, making complex equations manageable. Enjoy a streamlined calculation experience without interruptions.


This app offers a versatile calculator with both basic and scientific functions. It includes advanced features like currency and unit conversions, customizable themes, and history tracking. Optimized for both portrait and landscape modes, it's designed for users needing precise calculations and conversions.






A straightforward calculator app designed for ease of use with large, legible digits. It offers a simple interface for quick calculations on mobile devices.


Perform essential math operations like addition, subtraction, multiplication, and division without any interruptions. Save your calculations with custom titles for easy retrieval and reuse.


This app redefines the calculator experience for touch-screen devices with a modern, intuitive design. It offers features like a tape log for storing calculations, formula evaluation, and iPad multitasking support for enhanced productivity.






This app offers a comprehensive scientific calculator with advanced functions for math, finance, and engineering. It includes unit and currency conversion, a constants library, and a biorhythm calculator for daily insights. The interface is intuitive and supports multiple calculation modes.


This app offers a comprehensive scientific calculator with multiple modes, including algebraic, scientific, conversions, and logic calculations. It features a user-friendly design with large buttons and remembers your progress if interrupted.


Calculate molecular weights for DNA, RNA, proteins, peptides, and chemical formulas. Features a database of common compounds and chemical elements for quick selection. Useful for chemists and biochemists needing rapid calculations.


This app offers a straightforward and efficient calculation experience with a history log to review past computations. It supports multitasking and offers a dark mode for comfortable use.


This utility app provides a clear and intuitive way to perform calculations, showing the entire process for better understanding. Users can personalize the interface by changing the color theme to match their preferences.


This tool simplifies peptide dosage and reconstitution calculations. It accurately determines injection volumes and the correct amount of water for mixing, converting results to insulin syringe units. Designed for researchers and wellness enthusiasts, it ensures precise and confident peptide administration.


This app offers a comprehensive suite of 15 calculators for everyday and scientific needs. Easily perform basic arithmetic, complex scientific functions, and specialized calculations like sales tax, age, and loan payments. It also includes a robust unit converter for various measurements.

