# SOL vs zigfred

SOL and zigfred are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 6, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | SOL | zigfred |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 62 MB | 58 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kaian Intelligent Technology co., Ltd](https://appshunter.io/developer/897488071) | [Siglis AG](https://appshunter.io/developer/1535923846) |

## What reviewers say

### SOL

[App page](https://appshunter.io/ios/app/sol-kaian/id1103549264)

**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 SOL free?

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

### Is zigfred free?

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

### Do SOL or zigfred have ads?

Neither SOL nor zigfred shows ads.

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

SOL ships an update every 3 weeks, and zigfred every 3 weeks. Most recently, SOL was updated on September 6, 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.*