# Biquadia vs TheoMeter

The clearest difference is in-app purchases: TheoMeter at none against Biquadia's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Biquadia sells 2 in-app purchases, starting at $4.99 per month. TheoMeter asks for nothing beyond the download.

## The numbers

| Metric | Biquadia | TheoMeter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Size | 68 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Maker Portal LLC](https://appshunter.io/developer/1439459313) | [Frankie Wellman](https://appshunter.io/developer/6780719441) |

## What reviewers say

### Biquadia

[App page](https://appshunter.io/ios/app/biquadia-audio-and-dsp-lab/id6789775886)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Biquadia Pro Monthly | $4.99 | per month |
| Biquadia Pro Lifetime | $79.99 | one-time |


### TheoMeter

[App page](https://appshunter.io/ios/app/theometer/id6790203603)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Biquadia free?

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

### Is TheoMeter free?

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

### Do Biquadia or TheoMeter have ads?

Neither Biquadia nor TheoMeter 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.*