Comparison

AeroEngineS vs Eng Fluids

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

Head to head
About

AeroEngineS

This app simulates the thermodynamic cycles and performance of various aircraft and rocket engines. It calculates key parameters like thrust, mass flow, and emissions, and can predict compressor map operating points.

Highlights
  • Turbojet and turbofan engine simulation
  • Rocket engine cycle analysis
  • Ramjet engine simulation
  • Emissions calculation
  • Compressor map prediction
  • Thermodynamic cycle analysis
Features
Read full description

Aircraft Engine Performance at Design Point - Subsonic/Supersonic 1-Spool Turbojet - Subsonic 2-Spool Turbofan - Subsonic 2-Spool Boosted Turbofan - Subsonic 3-Spool Turbofan - Analysis of the Thermodynamic Cycle - Nozzle Area and Performance (Thrust, Power etc.) calculation - Mass Flows (Core, Bypass, Fuel) - Automatic calculation of ambient conditions based on the flight altitude using the International Standard Atmosphere model - Automatic calculation of Cp, gama, R for each component based on temperature and Fuel to Air Ratio - Automatic calculation of isentropic efficiency for each compressor and turbine based on polytropic efficiency and pressure ratio Hybrid Precooled Rocket Engine at Design Point - Analysis of the combined Thermodynamic Cycles with Air, Hydrogen & Helium as working fluids Ramjet Engine at Design Point - Simulation of the thermodynamic cycle of a hydrogen-fuelled Ramjet engine at optimized conditions. Ramjet Engine at Design Point - Simulation of the thermodynamic cycle of a hydrogen-fuelled Ramjet engine at optimized conditions. Supersonic 2-spool Turbojet Engine at Design Point - Simulation of the thermodynamic cycle of a Supersonic 2-spool turbojet engine with reheat. Aircraft Emissions - Emissions calculation for aircraft engines in LTO cycle and Cruise - Type of turbofan engines used: 1. Subsonic 2-Spool, 2. Subsonic 3-Spool Compressor Map Operating Point Prediction using - Scaling Techniques on an existing HPC map - Artificial Neural Networks to interpolate the existing map's data ______________________________________________________ Developer: Aggelos Gaitanis Original creator: Evangelia Pontika HyRE, Ramjet tab programmer: Spiros Tsentis Supersonic 2-spool Reheated tab programmer: Anastasios Saflekos Emissions tab developer/programmer: Maria Bakali Advisor: Ioanna Aslanidou, Konstantinos Kyprianidis Supervisor: Anestis Kalfas

About

Eng Fluids

Features
Read full description

Eng Fluids app provides real homework and test problems for the common engineering course called Statics. All problems are organized in sections and chapters common to most textbooks. Each problem has a complete solution with graphics to help you better understand how to solve the problem. Also, each problem has a link to a theory web page for that section at the online eBook (eCoursesBook.com). There is no cost for the online eBook, and it can be accessed outside of the app. The paid version ($2.99) has over 250 problems. There are no ads or in-app purchases. Network connection is required to run the app since all problems are pulled from an online database. Each problem is small (less than 20 k) and are vector-based graphics. All problems have been used in real engineering classes. Problems are accessed through an online database, so if any errors are identified, they will be updated and the app will use the corrected version. This program is copyrighted and cannot be distributed without the author's written consent.

Screenshots

AeroEngineS4 screens
Eng Fluids3 screens

Verdict

The call

The clearest difference is update cadence: AeroEngineS at every 3 days against Eng Fluids's every 13 months. Eng Fluids's advantage is iOS requirement (9.0 vs 14.0). 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

AeroEngineS ships an update every 3 days, Eng Fluids every 13 months. The most recent releases landed on June 24, 2026 and September 21, 2026 respectively.

Scorecard2 real differences · 7 level
AeroEngineS versus Eng Fluids: the parameters behind the verdict, then further details
ParameterAeroEngineSEng Fluids
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 days — betterEvery 13 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.09.0 — better
Further details — not scored
Size7 MB21 MB
Age rating4+4+
DeveloperAristotle University of ThessalonikiKurt Gramoll

In-app purchases

None

AeroEngineS

No in-app purchases

None

Eng Fluids

No in-app purchases

Questions

Is AeroEngineS free?
AeroEngineS is free to download, with no in-app purchases.
Is Eng Fluids free?
Eng Fluids is free to download, with no in-app purchases.
Do AeroEngineS or Eng Fluids have ads?
Neither AeroEngineS nor Eng Fluids shows ads.
Which is updated more often, AeroEngineS or Eng Fluids?
AeroEngineS ships an update every 3 days, and Eng Fluids every 13 months. Most recently, AeroEngineS was updated on June 24, 2026 and Eng Fluids on September 21, 2026.

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