STORM vs SonoMeter
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
STORM
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Events Support System ā Coordinated safety response, built for live events. When something goes wrong on-site, seconds matter. Events Support System gives your security, medical, and operations teams one shared platform to communicate, respond, and stay ahead of incidents ā from a two-person team to a full festival crew. One tap to act Pre-written response protocols ā evacuation procedures, lost child protocol, severe weather holds, medical emergency response ā ready to broadcast to your entire team instantly. No fumbling for the right words during a crisis. Every incident, one timeline Chat, alerts, photos, and live locations flow into a single feed, so nothing gets lost across radios, texts, and spreadsheets. See exactly what's active, who's responding, and what's been resolved ā all in real time. Never miss what matters Critical alerts reach your team the moment they happen, even if the app isn't open. Push notifications surface fire, security, and medical incidents immediately, so your team can respond before the situation escalates. Built for real event operations - Instant "Send Alert" broadcast with one tap - Direct emergency services dialing - Live GPS location tagging on incidents - Role-based visibility for security, medical, and command staff - Incident status tracking (active/resolved) Whether you're running a festival, conference, or public event, Events Support System keeps your team synced and your response fast ā when it counts most.
SonoMeter
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Measure noise in decibels, understand it and keep a record, straight from your iPhone. SonoMeter turns your iPhone into a sound level meter: real-time dB readings with A, C or Z weighting, a clear risk scale, and the tools to document noise from neighbors, traffic, work or concerts. MEASURE ⢠Real-time sound level in dB(A), dB(C) or dB(Z) ⢠LAeq, Max and measurement time at a glance ⢠Fast, Slow and Impulse response ⢠Four views: real-time chart, 1/3-octave spectrum, needle gauge and a fun meter ⢠Decibel scale with everyday examples and safe daily exposure times ANALYZE ⢠Tap the chart for a live analysis: level distribution, L10, L50 and L90 ⢠Level over time, noise dose (NIOSH, OSHA) and average spectrum with Premium DOCUMENT ⢠Save sessions with timeline, location and notes ⢠Export a multi-page PDF report ⢠Record videos with the decibels on screen, including LAeq, duration and place ⢠Noise alerts above a threshold, with a log of every exceedance ⢠Continuous listening keeps measuring with the screen locked SLEEP ⢠White, pink or brown noise with a sleep timer and lock-screen controls ALSO ⢠Home Screen widget and Live Activity ⢠Available in English, French, German, Spanish, Italian, Japanese and Chinese ⢠Your measurements stay on your iPhone ABOUT ACCURACY iPhone microphones differ from one model to another. SonoMeter applies a calibration for each iPhone model and lets you fine-tune it against a reference sound level meter. Readings are indicative and do not replace a certified class 1 or class 2 sound level meter for legal measurements. PREMIUM Some features require SonoMeter Premium, available as a one-time purchase or as a subscription. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel them in your Apple ID settings. Terms of Use: https://fabulastudio.net/sonometre/cgu Privacy Policy: https://fabulastudio.net/sonometre/confidentialite
Screenshots
Verdict
The clearest difference is in-app purchases: STORM at none against SonoMeter's 4. STORM also leads on update cadence (every 2 weeks vs every 8 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. SonoMeter sells 4 in-app purchases, starting at $1.99 per 7 days. STORM asks for nothing beyond the download.
STORM ships an update every 2 weeks, SonoMeter every 8 months. The most recent releases landed on September 8, 2026 and October 24, 2026 respectively.
| Parameter | STORM | SonoMeter |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks ā better | Every 8 months |
| Ads | No | No |
| In-app purchases | No ā better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 ā better | 16 |
| Further details ā not scored | ||
| Size | 22 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | SHIELD Consultants Ltd. | Raphael Goupille |
In-app purchases
STORM
No in-app purchases
SonoMeter
- Weekly Subscription$1.997 Days
- Monthly subscription$5.991 Month
- Annual subscription$24.991 Year
- Premium Lifetime$6.99









