# ThreadFlows vs Calume

The clearest difference is in-app purchases: ThreadFlows at none against Calume's 3. ThreadFlows also leads on iOS requirement (13.4 vs 17.0). Calume's advantage is update cadence (fortnightly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Calume sells 3 in-app purchases, starting at $8.99 per month. ThreadFlows asks for nothing beyond the download.

ThreadFlows ships an update every 2 months, Calume fortnightly. The most recent releases landed on October 3, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | ThreadFlows | Calume |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 34 MB | 23 MB |
| Requires iOS | **13.4** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [EDUGEM TECHNOLOGIES PRIVATE LIMITED](https://appshunter.io/developer/1343661356) | [DANIEL HAVLAS](https://appshunter.io/developer/1889645064) |

## What reviewers say

### ThreadFlows

[App page](https://appshunter.io/ios/app/threadflows/id6746440569)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calume

[App page](https://appshunter.io/ios/app/calume-time-tracker/id6776441027)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chronicle Pro Monthly | $8.99 | per month |
| Chronicle Pro Yearly | $19.99 | per year |
| Chronicle Pro Yearly | $34.99 | per year |


## Frequently asked questions

### Is ThreadFlows free?

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

### Is Calume free?

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

### Do ThreadFlows or Calume have ads?

Neither ThreadFlows nor Calume shows ads.

### Which is updated more often, ThreadFlows or Calume?

ThreadFlows ships an update every 2 months, and Calume fortnightly. Most recently, ThreadFlows was updated on October 3, 2026 and Calume 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.*