# SonoMeter vs TempCalc

The clearest difference is in-app purchases: TempCalc at none against SonoMeter's 4. TempCalc also leads on update cadence (weekly vs every 8 months) and iOS requirement (13.0 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. TempCalc asks for nothing beyond the download.

SonoMeter ships an update every 8 months, TempCalc weekly. The most recent releases landed on October 24, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | SonoMeter | TempCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Weekly** |
| Size | 35 MB | 19 MB |
| Requires iOS | 16 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Raphael Goupille](https://appshunter.io/developer/1650597250) | [Jesus Alcaraz Gomez](https://appshunter.io/developer/1820891100) |

## 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 |


### TempCalc

[App page](https://appshunter.io/ios/app/tempcalc/id6761309973)

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

**In-app purchases:** none


## Frequently asked questions

### Is SonoMeter free?

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

### Is TempCalc free?

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

### Do SonoMeter or TempCalc have ads?

Neither SonoMeter nor TempCalc shows ads.

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

SonoMeter ships an update every 8 months, and TempCalc weekly. Most recently, SonoMeter was updated on October 24, 2026 and TempCalc on September 18, 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.*