# AUXSOL vs KSTAR Sync

AUXSOL and KSTAR Sync 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.

AUXSOL ships an update fortnightly, KSTAR Sync every 2 weeks. The most recent releases landed on August 26, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | AUXSOL | KSTAR Sync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 136 MB | 74 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [NINGBO AUX SOLAR TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1690040159) | [Shenzhen Kstar Science & Technology Co., Ltd.](https://appshunter.io/developer/1460236605) |

## What reviewers say

### AUXSOL

[App page](https://appshunter.io/ios/app/auxsol/id6449678866)

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

**In-app purchases:** none


### KSTAR Sync

[App page](https://appshunter.io/ios/app/kstar-sync/id6754310380)

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

**In-app purchases:** none


## Frequently asked questions

### Is AUXSOL free?

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

### Is KSTAR Sync free?

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

### Do AUXSOL or KSTAR Sync have ads?

Neither AUXSOL nor KSTAR Sync shows ads.

### Which is updated more often, AUXSOL or KSTAR Sync?

AUXSOL ships an update fortnightly, and KSTAR Sync every 2 weeks. Most recently, AUXSOL was updated on August 26, 2026 and KSTAR Sync on September 15, 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.*