# SonoMeter vs IDX

The clearest difference is in-app purchases: IDX at none against SonoMeter's 4. IDX also leads on iOS requirement (14.0 vs 16). On price, ads and device support there is nothing between them.

Both are free to download. SonoMeter sells 4 in-app purchases, starting at $1.99 per 7 days. IDX asks for nothing beyond the download.

## The numbers

| Metric | SonoMeter | IDX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | — |
| Size | 35 MB | 24 MB |
| Requires iOS | 16 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Raphael Goupille](https://appshunter.io/developer/1650597250) | [White Vega Logistic SL](https://appshunter.io/developer/1459318666) |

## 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 |


### IDX

[App page](https://appshunter.io/ios/app/idx/id6755916337)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SonoMeter free?

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

### Is IDX free?

IDX is free to download, with no in-app purchases.

### Do SonoMeter or IDX have ads?

Neither SonoMeter nor IDX shows ads.

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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.*