# Biosom vs Quadrangular Avaré

The clearest difference is in-app purchases: Quadrangular Avaré at none against Biosom's 4. Quadrangular Avaré also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Biosom sells 4 in-app purchases, starting at $7.99 per month. Quadrangular Avaré asks for nothing beyond the download.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 3, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Biosom | Quadrangular Avaré |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/biosom-hearing-test/id6445955640/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 91 MB | 44 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | +4 | 4+ |
| Developer | [BIOSOM IMP. EXP. COMERCIO & SERVIÇOS LTDA](https://appshunter.io/developer/1667584544) | [Igreja do Evangelho Quadrangular](https://appshunter.io/developer/1499571511) |

## What reviewers say

### Biosom

[App page](https://appshunter.io/ios/app/biosom-hearing-test/id6445955640)

This app offers a casual way to check for potential hearing loss by determining your hearing threshold across different frequencies. While not a substitute for professional medical advice, it can spark curiosity and encourage users to seek a proper diagnosis from a doctor.

**Highlights:** Online hearing test, Determine hearing threshold, Frequency-based results graph, Casual self-assessment, Sparks curiosity for professional consultation

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $7.99 | per month |
| Semiannual Subscription | $39.99 | per 6 months |
| Annual Subscription | $79.99 | per year |
| 30 Days Full Access | $5.99 | one-time |


### Quadrangular Avaré

[App page](https://appshunter.io/ios/app/quadrangular-avare/id6502529814)

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

**In-app purchases:** none


## Frequently asked questions

### Is Biosom free?

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

### Is Quadrangular Avaré free?

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

### Do Biosom or Quadrangular Avaré have ads?

Biosom shows ads; Quadrangular Avaré does not.

### Which is updated more often, Biosom or Quadrangular Avaré?

Biosom ships an update fortnightly, and Quadrangular Avaré fortnightly. Most recently, Biosom was updated on October 3, 2026 and Quadrangular Avaré on October 11, 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.*