The ABG App
by Carl Wilhelm Haakenstad
- Education
- Paid
- Rating
- 5.0
- 2 ratings
- Top 85%among 86 Education apps
- Last update
- Oct 20, 2026
- Version 1.22.0
- Size
- 47 MB
- Category
- Education
- Tracked since
- Oct 14, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
Blodgassappen is an educational analysis and learning tool for healthcare professionals and students with a relevant professional background. The app is in Norwegian.
You enter a blood gas you have already obtained - by scanning the analyzer printout, pasting values, or typing them in - and the app shows how it is read: which acid-base disturbance the numbers describe, how the anion gap and compensation are calculated, which differential diagnoses the pattern is compatible with, and what cannot be determined from what was entered.
The purpose is to teach the method.
HOW IT WORKS
- Scan the printout: point the camera at the paper printout from the blood gas analyzer and the values are read in automatically.
- Or paste / type the values manually.
- The app walks through the systematic method: primary disturbance, compensation, anion gap with albumin correction, delta assessment, and differential diagnoses.
- Everything is calculated in the open - you see which formulas are used, which reference limits apply, and where they come from.
WHAT THE APP EMPHASIZES
- The method, not the answer key: the app shows the reasoning behind every step, the way an experienced colleague would explain it.
- Honesty about uncertainty: when a value is missing, the app clearly states what cannot be assessed - it never fills in silent assumptions.
- Serial gases: enter several gases from the same clinical course and see how the picture evolves over time.
- Share and teach: export the analysis as slides or share a gas as a QR code for teaching.
FOR WHOM
Physicians, nurses, paramedics, and students who want to become more confident in systematic blood gas interpretation.
IMPORTANT
The app is not a medical device and is not approved by regulatory agencies (FDA/EMA or the Norwegian Medical Products Agency) for diagnostic purposes. It does not assess any patient and makes no clinical decision. All patient assessment must be done by qualified healthcare personnel exercising independent clinical judgment.
All computation happens locally on the device. No patient-identifying data is sent to any server.
What’s new
Release notes for the latest version, as written by the developer.
The ABG App is now in English on every phone not set to Norwegian, Swedish or Danish, and you choose the app's language yourself under Settings → The ABG App → Language. The launch screen shows the icon. Did the app read a printout wrong, or not your format at all? Write to us at [email protected] or @blodgassappen on Instagram. Everything reported gets fixed.
Rank history
Daily position in the Norway charts. #1 is at the top.
- Best rank
- #5
- Current rank
- #5
- Days charting
- 5 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
81/100
Not flagged as small & simple
- Developer size100% · 25
Developer: 1 app on the charts
- Audience size– · 20
No data, weight redistributed
- App size100% · 10
Size: 47 MB
- Price model100% · 15
Price model: paid
- Demand proof50% · 30
Best rank #5, 1 country
An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2
How the score worksVersion history
- 1.22.0LatestReleased Oct 20, 2026
- 1.20.0Released Sep 15, 2026