IsoDecibel vs AcousticCheck
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.
AcousticCheck
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With AcousticCheck, the reverberation time (RT60) can be measured simple, fast and with high accuracy - even by people without acoustic expertise. AcousticCheck includes the following features for a smooth measurement experience: - Reverberation time measurement by impulse or sweep method - Up to nine consecutive measurements per measurement run for the most accurate results possible - Simple tutorial and guided measurement instructions - Detailed result display: Reverberation time on average and in octaves⁺ (chart, table) - Save measurement results for individual rooms or whole projects⁺ - Save and Share the measurement results as a chart and table⁺ - In-depth support⁺ Additional features for advanced and expert users: - Customizable room size (particularly helpful for measurements in larger rooms)⁺ - Adjustable start delay for impulse measurements⁺ - Save and Share results in CSV format (full measurement results, average reverberation times, correlation coefficient rT20 & signal-to-noise ratio SNR included)⁺ - Information on the room and additional notes can be added to the result export - Photos can be added to the result export - Optional export of impulse responses as WAV files⁺ ⁺only included in AcousticCheck Plus This app does not collect, use, store or transfer personal data. With your permission, Apple collects app analytics to help developers improve their apps. For more information, see the links below. Apple Privacy Policy: https://www.apple.com/privacy/ Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: AcousticCheck at every 4 months against IsoDecibel's every 9 months. IsoDecibel's advantage is iOS requirement (13.0 vs 16.6). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
IsoDecibel ships an update every 9 months, AcousticCheck every 4 months. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.
| Parameter | IsoDecibel | AcousticCheck |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 10 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Emil Aerenlund | rosenbinder UG |
In-app purchases
IsoDecibel
No in-app purchases
AcousticCheck
No in-app purchases
Questions
Is IsoDecibel free?
Is AcousticCheck free?
Do IsoDecibel or AcousticCheck have ads?
Which is updated more often, IsoDecibel or AcousticCheck?
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