Comparison

369Sonic vs EchoGauge

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

369Sonic

Features
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369Sonic is an application designed for easy and intuitive control of ultrasonic knives and cutters. It allows users to change blade types and customize settings such as cutting frequency. The application also provides useful real-time information, including current performance, temperature, and battery charge status.

About

EchoGauge

Features
Read full description

EchoGauge is a smart utility that helps you measure noise levels in decibels and detect vibrations using your iPhone’s built-in sensors. Whether you need to check the quietness of a baby’s room, monitor workplace noise, or measure vibrations near construction sites, [Name] gives you instant, reliable results. Key Features: Real-time noise meter – live decibel readings with status from Quiet to Very Loud. Vibration detection – track movement and vibration amplitude via the accelerometer. Measurement history – automatically save and review past measurements with peaks and averages. Local data storage – all measurements stay securely on your device. Quick CSV export – share measurement history for reports or analysis. With EchoGauge you can easily monitor your environment anywhere – at home, at work, or outdoors.

Screenshots

369Sonic4 screens
EchoGauge4 screens

Verdict

The call

369Sonic and EchoGauge are too close to call on the numbers: across 6 compared parameters β€” price, update cadence, ads and in-app purchases among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

369Sonic ships an update every 9 days, EchoGauge every 5 days. The most recent releases landed on September 10, 2026 and September 8, 2026 respectively.

ScorecardNo meaningful differences
369Sonic versus EchoGauge: the parameters behind the verdict, then further details
Parameter369SonicEchoGauge
PriceFreeFree
Update frequencyEvery 9 daysEvery 5 days β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.0 β€” better14
Further details β€” not scored
Size46 MB5 MB
Age rating4+4+
Developer369sonic s.r.o.Sami Pehlivan

In-app purchases

None

369Sonic

No in-app purchases

None

EchoGauge

No in-app purchases

Questions

Is 369Sonic free?
369Sonic is free to download, with no in-app purchases.
Is EchoGauge free?
EchoGauge is free to download, with no in-app purchases.
Do 369Sonic or EchoGauge have ads?
Neither 369Sonic nor EchoGauge shows ads.
Which is updated more often, 369Sonic or EchoGauge?
369Sonic ships an update every 9 days, and EchoGauge every 5 days. Most recently, 369Sonic was updated on September 10, 2026 and EchoGauge on September 8, 2026.

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