# SonoMeter vs CarWidget

The clearest difference is update cadence: CarWidget at every 4 weeks against SonoMeter's every 8 months. SonoMeter's advantage is device support (3 vs 1) and iOS requirement (16 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. SonoMeter sells 4 in-app purchases, starting at $1.99 per 7 days and CarWidget sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

SonoMeter ships an update every 8 months, CarWidget every 4 weeks. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | SonoMeter | CarWidget |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 weeks** |
| Size | 35 MB | 4 MB |
| Requires iOS | **16** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Raphael Goupille](https://appshunter.io/developer/1650597250) | [改 喻](https://appshunter.io/developer/1697444471) |

## What reviewers say

### SonoMeter

[App page](https://appshunter.io/ios/app/sonometer-decibel-meter/id6745488403)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $1.99 | per 7 days |
| Monthly subscription | $5.99 | per month |
| Annual subscription | $24.99 | per year |
| Premium Lifetime | $6.99 | one-time |


### CarWidget

[App page](https://appshunter.io/ios/app/carwidget/id6759196694)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| lifetime | $1.99 | one-time |


## Frequently asked questions

### Is SonoMeter free?

SonoMeter is free to download, with in-app purchases available.

### Is CarWidget free?

CarWidget is free to download, with in-app purchases available.

### Do SonoMeter or CarWidget have ads?

Neither SonoMeter nor CarWidget shows ads.

### Which is updated more often, SonoMeter or CarWidget?

SonoMeter ships an update every 8 months, and CarWidget every 4 weeks. Most recently, SonoMeter was updated on October 24, 2026 and CarWidget on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*