# NapCat vs Tethra.ai

The clearest difference is update cadence: Tethra.ai at every 2 weeks against NapCat's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. NapCat sells 3 in-app purchases, starting at $1.99 per month and Tethra.ai sells 7 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

NapCat ships an update every 4 months, Tethra.ai every 2 weeks. The most recent releases landed on October 5, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | NapCat | Tethra.ai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (7 ratings)](https://appshunter.io/ios/app/napcat-offline-github-client/id606238223/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 156 MB | 48 MB |
| Requires iOS | 15.5 | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shotdoor](https://appshunter.io/developer/530049796) | [Gitspark Technologies, LLC](https://appshunter.io/developer/1669355905) |

## What reviewers say

### NapCat

[App page](https://appshunter.io/ios/app/napcat-offline-github-client/id606238223)

Access and read your favorite GitHub repositories offline on any device. This app offers a powerful code editor and comfortable reading experience with syntax highlighting for over 90 languages. Enjoy your code anywhere, anytime.

**Highlights:** Offline Git client, Code editor, Syntax highlighting, Starred repository access, Supports 90+ languages, Customizable themes

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Pro | $1.99 | per month |
| 1 Year Pro | $9.99 | per year |
| NapCat Upgrade | $12.99 | one-time |


### Tethra.ai

[App page](https://appshunter.io/ios/app/tethraai/id6759218397)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Tethra | $14.99 | per month |
| Tethra | $99.99 | per year |
| 10,000 Credits | $0.99 | one-time |
| 50,000 Credits | $4.99 | one-time |
| 100,000 Credits | $9.99 | one-time |
| 250,000 Credits | $24.99 | one-time |


## Frequently asked questions

### Is NapCat free?

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

### Is Tethra.ai free?

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

### Do NapCat or Tethra.ai have ads?

Neither NapCat nor Tethra.ai shows ads.

### Which is updated more often, NapCat or Tethra.ai?

NapCat ships an update every 4 months, and Tethra.ai every 2 weeks. Most recently, NapCat was updated on October 5, 2026 and Tethra.ai on September 28, 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.*