Flatter vs Sound Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flatter
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It's a really simple level. Just tilt your phone.
Sound Meter
Measure and record environmental noise levels in real-time. Tag recordings with GPS, view sound history with min/max/average values, and analyze the sound spectrum. Export data as CSV or audio files, with offline functionality.
- Real-time dB measurement
- GPS tagging for recordings
- Local log management
- Min, max, and average values
- FFT spectrum analysis
- CSV and audio export
- Offline functionality
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Measure environmental noise in real-time, record it with GPS, and manage your sound history. Key Features: • Instant dB measurement with a clean interface • GPS tagging for each record (optional) • Save and manage logs locally • View min, max, and average values • FFT spectrum and real-time graph • Export as CSV or audio file • Works completely offline • No ads in Pro version Perfect for monitoring noise at home, work, or outdoors.
Screenshots
Verdict
The clearest difference is ads: Sound Meter at none against Flatter's shown. Flatter's advantage is update cadence (fortnightly vs every 11 months) and iOS requirement (12.0 vs 16.6). On price, 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.
Flatter ships an update fortnightly, Sound Meter every 11 months. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.
| Parameter | Flatter | Sound Meter |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Fortnightly — better | Every 11 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 24 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Jeong-soo Park | Chang Keun Jung |
In-app purchases
Flatter
No in-app purchases
Sound Meter
No in-app purchases
Questions
Is Flatter free?
Is Sound Meter free?
Do Flatter or Sound Meter have ads?
Which is updated more often, Flatter or Sound Meter?
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