# Tervalyx vs FormantScope

The clearest difference is ads: FormantScope at none against Tervalyx's shown. Tervalyx's advantage is update cadence (every 6 days vs every 6 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Tervalyx ships an update every 6 days, FormantScope every 6 weeks. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Tervalyx | FormantScope |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 6 weeks |
| Size | 12 MB | 4 MB |
| Requires iOS | 17 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [CHUN-MING LIN](https://appshunter.io/developer/1831637603) | [跃然 王](https://appshunter.io/developer/1895682344) |

## What reviewers say

### Tervalyx

[App page](https://appshunter.io/ios/app/tervalyx/id6749874856)

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

**In-app purchases:** none


### FormantScope

[App page](https://appshunter.io/ios/app/formantscope/id6764803567)

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

**In-app purchases:** none


## Frequently asked questions

### Is Tervalyx free?

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

### Is FormantScope free?

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

### Do Tervalyx or FormantScope have ads?

Tervalyx shows ads; FormantScope does not.

### Which is updated more often, Tervalyx or FormantScope?

Tervalyx ships an update every 6 days, and FormantScope every 6 weeks. Most recently, Tervalyx was updated on October 28, 2026 and FormantScope on October 24, 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.*