# ThoughtTrace vs VOSUMI

The clearest difference is in-app purchases: VOSUMI at none against ThoughtTrace's 1. VOSUMI also leads on ads (none vs shown) and update cadence (every 6 days vs every 3 weeks). ThoughtTrace's advantage is iOS requirement (17.0 vs 26.0). On price and device support there is nothing between them.

Both are free to download. ThoughtTrace sells 1 one-off in-app purchase. VOSUMI asks for nothing beyond the download.

ThoughtTrace ships an update every 3 weeks, VOSUMI every 6 days. The most recent releases landed on October 31, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | ThoughtTrace | VOSUMI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Size | 19 MB | 4 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [JUNICHI WATANABE](https://appshunter.io/developer/1837543582) | [Yusuke Teranishi](https://appshunter.io/developer/6775522996) |

## What reviewers say

### ThoughtTrace

[App page](https://appshunter.io/ios/app/thoughttrace-brain-dump-notes/id6777566567)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Plan (Lifetime) | $4.99 | one-time |


### VOSUMI

[App page](https://appshunter.io/ios/app/vosumi-voice-translator/id6786697861)

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

**In-app purchases:** none


## Frequently asked questions

### Is ThoughtTrace free?

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

### Is VOSUMI free?

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

### Do ThoughtTrace or VOSUMI have ads?

ThoughtTrace shows ads; VOSUMI does not.

### Which is updated more often, ThoughtTrace or VOSUMI?

ThoughtTrace ships an update every 3 weeks, and VOSUMI every 6 days. Most recently, ThoughtTrace was updated on October 31, 2026 and VOSUMI on October 9, 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.*