# zeptrion vs zigfred

The clearest difference is update cadence: zigfred at every 3 weeks against zeptrion's every 6 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

zeptrion ships an update every 6 months, zigfred every 3 weeks. The most recent releases landed on September 15, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | zeptrion | zigfred |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Size | 15 MB | 58 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Feller AG](https://appshunter.io/developer/525095492) | [Siglis AG](https://appshunter.io/developer/1535923846) |

## What reviewers say

### zeptrion

[App page](https://appshunter.io/ios/app/zeptrion/id877577147)

**Features:** macOS Compatibility

**In-app purchases:** none


### zigfred

[App page](https://appshunter.io/ios/app/zigfred/id1535923844)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is zeptrion free?

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

### Is zigfred free?

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

### Do zeptrion or zigfred have ads?

Neither zeptrion nor zigfred shows ads.

### Which is updated more often, zeptrion or zigfred?

zeptrion ships an update every 6 months, and zigfred every 3 weeks. Most recently, zeptrion was updated on September 15, 2026 and zigfred on September 7, 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.*