IsoDecibel vs SoundSim360
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IsoDecibel
This tool simplifies decibel calculations, allowing you to add, subtract, and average sound source levels. It's designed for ease of use and to provide an educational insight into acoustics.
- Add independent source levels
- Subtract independent source levels
- Calculate average of source levels
- Sum up to 20 source levels
- Educational insight into acoustics
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IsoDecibel is a simple and easy-to-use decibel calculator tool, for adding and subtracting independent source levels. IsoDecibel also provides the user with an option to calculate the average of source levels. The user has the ability to find the average and also the sum of up to 20 source levels. The calculator is designed to be easy-to-use, and also as an educational software that gives the user an insight into the field of Acoustics.
SoundSim360
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SoundSim360 brings professional-grade wind turbine noise simulation to your iPhone and iPad. Place turbines on a real map, run on-device propagation calculations, and within seconds see a geo-referenced noise heatmap. The computations are based on a condensed version of the full high-performance software package, adapted for quickly simulating dBA noise emissions from wind turbines on your device. Key features: · Place turbines and receiver points on an interactive map using GPS coordinates or any supported coordinate system · On-device inference using terrain elevation data (topography) and ground type data (forest, water, asphalt etc.) · Color-coded noise heatmap showing A-weighted sound pressure levels in 5 dBA bands · Noise levels at specific receiver point locations · Your location: GPS-based noise reading from the simulation result at your current position · Multiple independent simulation scenarios (create, rename, duplicate, import, and export) · Export results as PNG image and CSV data file · Share simulations as .soundsim files Subscription: The default app allows 2 turbines and a demo area to explore the app. Subscribing enables up to 30 turbines and unrestricted simulation area (global placement of turbines). SoundSim360 is developed by Pronumerix, the makers of the full SoundSim360 simulation software. Terms of Use: https://pronumerix.com/soundsim360/terms-of-use Privacy Policy: https://pronumerix.com/soundsim360/privacy-policy
Screenshots
Verdict
The clearest difference is in-app purchases: IsoDecibel at none against SoundSim360's 1. IsoDecibel also leads on iOS requirement (13.0 vs 16.4). SoundSim360's advantage is update cadence (every 3 weeks vs every 9 months). On price, ads 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
Both are free to download. SoundSim360 sells 1 in-app purchase, starting at $34.99 per month. IsoDecibel asks for nothing beyond the download.
IsoDecibel ships an update every 9 months, SoundSim360 every 3 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | IsoDecibel | SoundSim360 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 10 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | Emil Aerenlund | Pronumerix AB |
In-app purchases
IsoDecibel
No in-app purchases
SoundSim360
- SoundSim360 Subscription$34.991 Month









