# THOTH ECG vs FormSight

The clearest difference is in-app purchases: THOTH ECG at none against FormSight's 2. THOTH ECG also leads on iOS requirement (13.0 vs 17.0). FormSight's advantage is update cadence (monthly vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. FormSight sells 2 in-app purchases, starting at $9.99 per month. THOTH ECG asks for nothing beyond the download.

THOTH ECG ships an update every 8 months, FormSight monthly. The most recent releases landed on September 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | THOTH ECG | FormSight |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Size | 5 MB | 8 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [索思(苏州)医疗科技有限公司](https://appshunter.io/developer/1425728935) | [Big Creek Holdings LLC](https://appshunter.io/developer/1883413634) |

## What reviewers say

### THOTH ECG

[App page](https://appshunter.io/ios/app/thoth-ecg/id6472871296)

**Features:** macOS Compatibility

**In-app purchases:** none


### FormSight

[App page](https://appshunter.io/ios/app/formsight/id6760241174)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FormSight Coach (Monthly) | $9.99 | per month |
| FormSight Coach Annual | $99.99 | per year |


## Frequently asked questions

### Is THOTH ECG free?

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

### Is FormSight free?

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

### Do THOTH ECG or FormSight have ads?

Neither THOTH ECG nor FormSight shows ads.

### Which is updated more often, THOTH ECG or FormSight?

THOTH ECG ships an update every 8 months, and FormSight monthly. Most recently, THOTH ECG was updated on September 18, 2026 and FormSight on September 8, 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.*