# Unix Time is Readable vs Carbon Notes

The clearest difference is in-app purchases: Unix Time is Readable at none against Carbon Notes's 2. Unix Time is Readable also leads on update cadence (every 5 days vs every 3 weeks) and iOS requirement (15.0 vs 17.6). Carbon Notes's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Carbon Notes sells 2 in-app purchases, starting at $19.99 per month. Unix Time is Readable asks for nothing beyond the download.

Unix Time is Readable ships an update every 5 days, Carbon Notes every 3 weeks. The most recent releases landed on October 16, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Unix Time is Readable | Carbon Notes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Size | 5 MB | 12 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fares Alharbi](https://appshunter.io/developer/1434218760) | [YMMV](https://appshunter.io/developer/1224453829) |

## What reviewers say

### Unix Time is Readable

[App page](https://appshunter.io/ios/app/unix-time-is-readable/id1659573028)

**In-app purchases:** none


### Carbon Notes

[App page](https://appshunter.io/ios/app/carbon-notes/id6748026908)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $19.99 | per month |
| AI Unlock | $4.99 | one-time |


## Frequently asked questions

### Is Unix Time is Readable free?

Unix Time is Readable is free to download, with no in-app purchases.

### Is Carbon Notes free?

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

### Do Unix Time is Readable or Carbon Notes have ads?

Unix Time is Readable shows ads; Carbon Notes does not.

### Which is updated more often, Unix Time is Readable or Carbon Notes?

Unix Time is Readable ships an update every 5 days, and Carbon Notes every 3 weeks. Most recently, Unix Time is Readable was updated on October 16, 2026 and Carbon Notes on October 25, 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.*