Comparison

Observe. vs NoR∆ Dynamics

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

Head to head
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.

About

NoR∆ Dynamics

Features
Read full description

NoRΔ – Hemodynamic Modeling NoRΔ is an educational and research-focused platform designed for physicians interested in arterial waveform physiology and cardiovascular modeling. The application enables structured exploration of arterial pressure morphology and algorithm-based hemodynamic representations using user-provided data inputs. Waveform Exploration • Educational waveform import and curve tracing • Visualization of systolic upstroke characteristics • Multi-cycle respiratory variation modeling Hemodynamic Modeling The platform provides algorithmic representations of parameters such as: • Cardiac Output (CO) • Stroke Volume (SV) • Pulse Pressure Variation (PPV) • Dynamic Arterial Elastance (Ea_dyn) • Systemic Vascular Resistance (SVR) All outputs are mathematical estimations intended solely for educational and research exploration. Intended Audience Developed for licensed physicians, medical residents, fellows, and healthcare professionals engaged in advanced hemodynamic education. Important Notice NoRΔ is an educational and research software application. It is not a medical device. It is not intended for diagnosis, patient monitoring, or therapeutic decision-making. The software has not been evaluated, cleared, or approved by the U.S. FDA, ANVISA, or any regulatory authority. Users are solely responsible for independent clinical judgment.

Screenshots

Observe.4 screens
NoR∆ Dynamics4 screens

Verdict

The call

The clearest difference is update cadence: NoR∆ Dynamics at every 3 days against Observe.'s every 8 months. Observe.'s advantage is iOS requirement (13.0 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Observe. ships an update every 8 months, NoR∆ Dynamics every 3 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 4 level
Observe. versus NoR∆ Dynamics: the parameters behind the verdict, then further details
ParameterObserve.NoR∆ Dynamics
PriceFreeFree
Update frequencyEvery 8 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better26.2
Further details — not scored
Size29 MB4 MB
Age rating4+12+
DeveloperSELECT ICT Systems SAELukas Madeira

In-app purchases

None

Observe.

No in-app purchases

None

NoR∆ Dynamics

No in-app purchases

Questions

Is Observe. free?
Observe. is free to download, with no in-app purchases.
Is NoR∆ Dynamics free?
NoR∆ Dynamics is free to download, with no in-app purchases.
Do Observe. or NoR∆ Dynamics have ads?
Neither Observe. nor NoR∆ Dynamics shows ads.
Which is updated more often, Observe. or NoR∆ Dynamics?
Observe. ships an update every 8 months, and NoR∆ Dynamics every 3 days. Most recently, Observe. was updated on October 27, 2026 and NoR∆ Dynamics on October 25, 2026.

Other comparisons