# Unisphere AR vs Chess advisor

The clearest difference is in-app purchases: Unisphere AR at none against Chess advisor's 4. Chess advisor's advantage is update cadence (every 11 days vs every 8 months) and iOS requirement (12.2 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Chess advisor sells 4 in-app purchases, starting at $3.99 per 7 days. Unisphere AR asks for nothing beyond the download.

Unisphere AR ships an update every 8 months, Chess advisor every 11 days. The most recent releases landed on October 5, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Unisphere AR | Chess advisor |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 11 days** |
| Monetization | — | Free with in-app purchases |
| Size | 161 MB | 134 MB |
| Requires iOS | 15.0 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EyeJack](https://appshunter.io/developer/1176913904) | [先成 项](https://appshunter.io/developer/1624846153) |

## What reviewers say

### Unisphere AR

[App page](https://appshunter.io/ios/app/unisphere-ar/id6736978519)

**In-app purchases:** none


### Chess advisor

[App page](https://appshunter.io/ios/app/chess-advisor/id6738571854)

Analyze chess games using a cloud engine and library, or play against it. Connect to third-party platforms to synchronize game situations and quickly improve your chess skills.

**Highlights:** Cloud engine analysis, Cloud library integration, Play against cloud engine, Software chessboard analysis, Third-party platform synchronization

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chess advisor weakly pay | $3.99 | per 7 days |
| Chess advisor monthly pay | $9.99 | per month |
| Chess advisor quarterly pay | $17.99 | per 3 months |
| Chess advisor yearly pay | $49.99 | per year |


## Frequently asked questions

### Is Unisphere AR free?

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

### Is Chess advisor free?

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

### Do Unisphere AR or Chess advisor have ads?

Neither Unisphere AR nor Chess advisor shows ads.

### Which is updated more often, Unisphere AR or Chess advisor?

Unisphere AR ships an update every 8 months, and Chess advisor every 11 days. Most recently, Unisphere AR was updated on October 5, 2026 and Chess advisor on October 27, 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.*