Comparison

Cardio Tools vs Observe.

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Cardio Tools

Features
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Cardio Tools App includes some commonly used scales in cardiology. Features are as follows: - We included 15 commonly used medical scales in cadiology in Version 1.0, and we will continue to add more scales or tools according to users' feedback. - You can quickly search for scales and add frequently used scales to favorites. - Records of scores on scales can be saved for easy recall when needed. Disclaimer: Cardio Tools App is designed only for healthcare professionals, not for the public. Please seek doctor's advice before making any medical decisions if you have any symptoms. Cardio Tools App includes clinical tools, which are aimed to be only a suggestive tool. Physicans and other healthcare professionals should have their own clinical judgment. If you have any feedback or questions, we would love to hear from you! Send email to edwardai.sj@gmail.com Disclaimer: Cardio Tools App is designed only for healthcare professionals, not for the public. Please seek doctor's advice before making any medical decisions if you have any symptoms. The App includes clinical tools, which are aimed to be only a suggestive tool. Physicans and other healthcare professionals should have their own clinical judgment. Privacy Policy: https://fatemed.notion.site/privacy-policy-cardio Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Observe.

Read full description

Observe, user-friendly app designed for healthcare professionals to assess heart failure with preserved ejection fraction, featuring the Heart Failure Association (HFA) of the European Society of Cardiology (ESC) scoring systems: HFA-PEFF and H2FPEF (U.S. Score) guidelines. A precise tool to calculate HFpEF risk score using functional, morphological, and biomarker data. It gives a probability and percentage estimation of HFpEF, aiding diagnosis. However, it's not a substitute for professional medical advice or diagnosis. Healthcare providers should rely on comprehensive medical evaluations and their expertise when interpreting results.

Screenshots

Cardio Tools4 screens
Observe.4 screens

Verdict

The call

The clearest difference is in-app purchases: Observe. at none against Cardio Tools's 1. Observe. also leads on update cadence (every 8 months vs every 20 months) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Cardio Tools sells 1 one-off in-app purchase. Observe. asks for nothing beyond the download.

UpkeepUpdate frequency

Cardio Tools ships an update every 20 months, Observe. every 8 months. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

Scorecard3 real differences ยท 3 level
Cardio Tools versus Observe.: the parameters behind the verdict, then further details
ParameterCardio ToolsObserve.
PriceFreeFree
Update frequencyEvery 20 monthsEvery 8 months โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPod
Requires iOS15.013.0 โ€” better
Further details โ€” not scored
Size2 MB29 MB
Age rating12+4+
DeveloperBeijing Fate Med Technology Co., Ltd.SELECT ICT Systems SAE

In-app purchases

1 purchases

Cardio Tools

One-time1
  • Lifetime Premium$4.99
None

Observe.

No in-app purchases

Questions

Is Cardio Tools free?
Cardio Tools is free to download, with in-app purchases available.
Is Observe. free?
Observe. is free to download, with no in-app purchases.
Do Cardio Tools or Observe. have ads?
Neither Cardio Tools nor Observe. shows ads.
Which is updated more often, Cardio Tools or Observe.?
Cardio Tools ships an update every 20 months, and Observe. every 8 months. Most recently, Cardio Tools was updated on November 3, 2026 and Observe. on October 27, 2026.

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