# SmarterNoise Pro vs Altimeter AR

The clearest difference is price: SmarterNoise Pro at Free against Altimeter AR's $0.99. SmarterNoise Pro also leads on iOS requirement (12.0 vs 17.0). Altimeter AR's advantage is in-app purchases (none vs 4). On update cadence, ads and device support there is nothing between them.

SmarterNoise Pro is free to download; Altimeter AR costs $0.99 up front. SmarterNoise Pro sells 4 one-off in-app purchases. Altimeter AR asks for nothing beyond the download.

SmarterNoise Pro ships an update monthly, Altimeter AR every 6 weeks. The most recent releases landed on September 22, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SmarterNoise Pro | Altimeter AR |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.4 (31 ratings)](https://appshunter.io/ios/app/smarternoise-pro/id1466745030/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 37 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Johan Rogard](https://appshunter.io/developer/1384299041) | [Okroshka Lab](https://appshunter.io/developer/467901636) |

## What reviewers say

### SmarterNoise Pro

[App page](https://appshunter.io/ios/app/smarternoise-pro/id1466745030)

This advanced sound level meter app offers detailed audio analysis with features like frequency spectrum display and data export. It allows for precise sound measurements in both video and audio recording modes, with options for A-, C-, or no weighting.

**Highlights:** Sound level measurement in video/audio modes, Frequency spectrum display, Export measurement data (CSV), Sound level activated audio recording, Calibration tool, Full HD video recording (paid)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Camera upgrade | $0.99 | one-time |
| Frequency spectrum indicator | $1.99 | one-time |
| Video and audio recording | $1.99 | one-time |
| Spectrogram display | $1.99 | one-time |


### Altimeter AR

[App page](https://appshunter.io/ios/app/altimeter-ar/id6784274188)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is SmarterNoise Pro free?

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

### Is Altimeter AR free?

Altimeter AR costs $0.99, with no in-app purchases.

### Do SmarterNoise Pro or Altimeter AR have ads?

Neither SmarterNoise Pro nor Altimeter AR shows ads.

### Which is updated more often, SmarterNoise Pro or Altimeter AR?

SmarterNoise Pro ships an update monthly, and Altimeter AR every 6 weeks. Most recently, SmarterNoise Pro was updated on September 22, 2026 and Altimeter AR on October 10, 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.*