LSPIV vs AeroEngineS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LSPIV
This application enables large-scale particle image velocimetry (LSPIV) using a smartphone. It offers a non-intrusive method for measuring water surface velocity distribution in both field and lab settings. The app provides instant ortho-rectification of captured images without needing ground control points.
- Large-scale particle image velocimetry
- Water surface velocity measurement
- Non-intrusive velocimetry
- Smartphone implementation
- Instant ortho-rectification
- No GCPs required
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LSPIV (large-scale particle image velocimetry) is an image-based method for measuring velocity distribution on the water surface. Applications of LSPIV have been increasing for both field and laboratory experiments as unique and powerful tools for non-intrusive velocimetry using conventional imaging devices and specialized image processing software. This app utilizes a smartphone to implement LSPIV. By innovatively combining the sensors embedded in smartphones, the images captured with them can be intrinsically and instantly ortho-rectified without making recourse to GCPs. The app was developed under support by the River Fund in charge of the Foundation of River and Watershed Environment Management (FOREM), Japan; Grant-in-Aid for Young Scientists (B); and the Research Fund of Japan Institute of Country-ology and Engineering.
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.
- Turbojet and turbofan engine simulation
- Rocket engine cycle analysis
- Ramjet engine simulation
- Emissions calculation
- Compressor map prediction
- Thermodynamic cycle analysis
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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
Screenshots
Verdict
The clearest difference is update cadence: AeroEngineS at every 3 days against LSPIV's every 13 months. LSPIV's advantage is iOS requirement (11.0 vs 14.0). On price, rating, ratings volume and ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for LSPIV against 5.0 for AeroEngineS. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
LSPIV ships an update every 13 months, AeroEngineS every 3 days. Both last shipped on June 24, 2026.
| Parameter | LSPIV | AeroEngineS |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 13 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 71 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryota Tsubaki | Aristotle University of Thessaloniki |
Customer experience
LSPIV
AeroEngineS
In-app purchases
LSPIV
No in-app purchases
AeroEngineS
No in-app purchases
Questions
Is LSPIV free?
Is AeroEngineS free?
Which has better reviews, LSPIV or AeroEngineS?
Do LSPIV or AeroEngineS have ads?
Which is updated more often, LSPIV or AeroEngineS?
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