# FourierSleep vs Hearing Test

The clearest difference is update cadence: FourierSleep at daily against Hearing Test's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. FourierSleep sells 1 one-off in-app purchase and Hearing Test sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

FourierSleep ships an update daily, Hearing Test monthly. The most recent releases landed on October 7, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | FourierSleep | Hearing Test |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/hearing-test-ear-age-test/id6762090881/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 29 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [TANG CHENGJUN](https://appshunter.io/developer/1887430333) | [Eren Arda Carboga](https://appshunter.io/developer/1759948038) |

## What reviewers say

### FourierSleep

[App page](https://appshunter.io/ios/app/fouriersleep/id6761359040)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock PRO | $4.99 | one-time |


### Hearing Test

[App page](https://appshunter.io/ios/app/hearing-test-ear-age-test/id6762090881)

This app provides a personal hearing assessment tool, allowing users to conduct pure tone audiometry and estimate their "ear age." It visualizes results in an audiogram and tracks changes over time, all while prioritizing user privacy.

**Highlights:** Pure tone audiometry at home, Ear age estimation, Audiogram visualization, Hearing health tracking, Private data storage, Apple Health integration

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Monthly Premium | $9.99 | per month |
| Lifetime Premium | $39.99 | one-time |


## Frequently asked questions

### Is FourierSleep free?

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

### Is Hearing Test free?

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

### Do FourierSleep or Hearing Test have ads?

Neither FourierSleep nor Hearing Test shows ads.

### Which is updated more often, FourierSleep or Hearing Test?

FourierSleep ships an update daily, and Hearing Test monthly. Most recently, FourierSleep was updated on October 7, 2026 and Hearing Test on October 19, 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.*