# SoundMeter X vs Formula Canvas

The clearest difference is iOS requirement: Formula Canvas at 16.0 against SoundMeter X's 18.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. SoundMeter X sells 7 in-app purchases, starting at $4.99 per month and Formula Canvas sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | SoundMeter X | Formula Canvas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (45 ratings)](https://appshunter.io/ios/app/soundmeter-x/id1348050232/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 22.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 3 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Faber Acoustical, LLC](https://appshunter.io/developer/284781780) | [杏娣 吴](https://appshunter.io/developer/1275821426) |

## What reviewers say

### SoundMeter X

[App page](https://appshunter.io/ios/app/soundmeter-x/id1348050232)

Transform your device into a professional sound level meter, noise dosimeter, and spectrum analyzer. Log data, calibrate sensitivity, and analyze audio with advanced features. Offers a free trial for premium functionalities.

**Highlights:** Handheld data-logging sound level meter, Data-logging noise dosimeter, Real-time octave spectrum analyzer, Multi-channel data recorder, Stereo signal generator, Sensitivity calibration, Data logging in CSV, TXT, MAT, and PDF

**Features:** Family Sharing, Apple Watch app

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SoundMeter Pro, 1 Month | $4.99 | per month |
| Pro Tool Set, 1 Month | $24.99 | per month |
| SoundMeter Pro, 1 Year | $49.99 | per year |
| Pro Tool Set, 1 Year | $249.99 | per year |
| 14-day Free Trial, SoundMeter Pro | Free | one-time |
| SoundMeter Pro 2026 Upgrade | $29.99 | one-time |
| SoundMeter Pro 2026 | $99.99 | one-time |


### Formula Canvas

[App page](https://appshunter.io/ios/app/formula-canvas-math-editor/id6784556654)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Formula Canvas Pro | $4.99 | one-time |


## Frequently asked questions

### Is SoundMeter X free?

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

### Is Formula Canvas free?

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

### Do SoundMeter X or Formula Canvas have ads?

Neither SoundMeter X nor Formula Canvas 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.*