# Extract Numbers and SUM vs Thread Mark

The clearest difference is in-app purchases: Extract Numbers and SUM at none against Thread Mark's 2. Thread Mark's advantage is update cadence (fortnightly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Thread Mark sells 2 one-off in-app purchases. Extract Numbers and SUM asks for nothing beyond the download.

Extract Numbers and SUM ships an update every 4 months, Thread Mark fortnightly. The most recent releases landed on October 25, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Extract Numbers and SUM | Thread Mark |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Fortnightly** |
| Size | 22 MB | 49 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ikeda tomoki](https://appshunter.io/developer/1538370047) | [Koya Kurauchi](https://appshunter.io/developer/1887146796) |

## What reviewers say

### Extract Numbers and SUM

[App page](https://appshunter.io/ios/app/extract-numbers-and-sum/id1581925241)

**Features:** macOS Compatibility

**In-app purchases:** none


### Thread Mark

[App page](https://appshunter.io/ios/app/thread-mark-markdown-notes/id6775019899)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy the Developer a Coffee | $2.99 | one-time |
| ThreadMark Pro | $9.99 | one-time |


## Frequently asked questions

### Is Extract Numbers and SUM free?

Extract Numbers and SUM is free to download, with no in-app purchases.

### Is Thread Mark free?

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

### Do Extract Numbers and SUM or Thread Mark have ads?

Both Extract Numbers and SUM and Thread Mark show ads.

### Which is updated more often, Extract Numbers and SUM or Thread Mark?

Extract Numbers and SUM ships an update every 4 months, and Thread Mark fortnightly. Most recently, Extract Numbers and SUM was updated on October 25, 2026 and Thread Mark on October 3, 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.*