# WISC vs PSIS GPP

The clearest difference is update cadence: WISC at every 5 weeks against PSIS GPP'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.

WISC ships an update every 5 weeks, PSIS GPP every 6 months. The most recent releases landed on October 11, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | WISC | PSIS GPP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 months |
| Size | 63 MB | 87 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [WINTECH SOFTWARE DEVELOPMENT (CAMBODIA) CO., LTD](https://appshunter.io/developer/1597112884) | [sovon khom](https://appshunter.io/developer/1332592182) |

## What reviewers say

### WISC

[App page](https://appshunter.io/ios/app/wisc/id6459018989)

**Features:** macOS Compatibility

**In-app purchases:** none


### PSIS GPP

[App page](https://appshunter.io/ios/app/psis-gpp/id6751321876)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is WISC free?

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

### Is PSIS GPP free?

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

### Do WISC or PSIS GPP have ads?

Neither WISC nor PSIS GPP shows ads.

### Which is updated more often, WISC or PSIS GPP?

WISC ships an update every 5 weeks, and PSIS GPP every 6 months. Most recently, WISC was updated on October 11, 2026 and PSIS GPP on October 18, 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.*