Acid Plus - The ABG Calculator
Acid Plus - The ABG Calculator Summary
Acid Plus - The ABG Calculator is a with in-app purchases iOS app in Medical by Free Radical Software. Released in Dec 2008 (17 years ago). It has 92 ratings with a 4.88★ (excellent) average. Based on AppGoblin estimates, it reaches roughly 229 monthly active users and generates around $<10K monthly revenue (100% IAP / 0% ads). Store metadata: updated Jun 14, 2022, version 1437.
Data tracking: SDKs and third-party integrations were last analyzed on Mar 9, 2026.
Store info: Last updated on App Store on Jun 14, 2022 (version 1437).
4.88★
Ratings: 92
Screenshots
App Description
Designed, programmed, and used by two internal medicine docs, Acid Plus is an essential tool for healthcare professionals who need quick, detailed, and easy-to-interpret acid-base results from ABGs and metabolic panels.
Ideal for MDs, PAs, NPs, RNs, RTs, EMTs, and med students, everything you need for acid-base calculations is put right in the palm of your hand. No more clunky ABG websites or guesswork.
With an intuitive design and easy-to-read display, Acid Plus makes it a breeze to answer even the most complex acid-base problems in seconds. Just turn the device to landscape view to get a colorful graph with an arrow highlighting the disorder.
*** What Others Say **************
• "This is certainly the best ABG calculator that we have seen so far on the iPhone and iPod Touch."
- Firas Salim, www.pda4peds.com
• "If you are practicing medicine and own an iPhone, you need to have it."
- Igor Kovic, MD, www.ivor-kovic.com
• "Interpreting the ABG and electrolytes to understand the acid-base status in my patients just turned from a chore into something immensely enjoyable. I cannot help smiling whenever I start this application."
• "This program is awesome! You have no idea how much this helps. Thank you so much."
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Features:
• Fast, accurate input using the dial
• Primary calculations including partial and complete compensations using anion gap with delta delta
• International support for kPa
• Ability to discern complex acid/base problems with secondary disorders
• See the anion gap and delta delta displayed on-screen with metabolic acidoses
• Detailed views listing common causes of the primary acid-base disorder
• On-the-fly derivation of anion gap, delta-delta, and base excess
• Rotating your device right or left to landscape view reveals a colorful interactive acid-base graph
• Interactive graph helps visualize acid-base disorders quickly and powerfully
• Set your own institution's anion gap easily for personalized results
• Save and recall your most recent ABG for quick review
• Works on iPhone and iPad
If you like the program please rate it. If you have any concerns or find any bugs please contact us at support@freeradicalsoft.com
DISCLAIMER: Please consider that the results provided by this program are intended to supplement but not substitute for the expertise and clinica