# PSIS Sen Sok vs PSIS4

The clearest difference is update cadence: PSIS Sen Sok at monthly against PSIS4's every 20 months. PSIS Sen Sok also leads on device support. On price, in-app purchases and iOS requirement there is nothing between them.

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

PSIS Sen Sok ships an update monthly, PSIS4 every 20 months. The most recent releases landed on October 8, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | PSIS Sen Sok | PSIS4 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Monthly** | Every 20 months |
| Size | 85 MB | 30 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 17+ | 4+ |
| Developer | [sovon khom](https://appshunter.io/developer/1332592182) | [YONG SOKHENG](https://appshunter.io/developer/1702023342) |

## What reviewers say

### PSIS Sen Sok

[App page](https://appshunter.io/ios/app/psis-sen-sok/id6450985170)

**Features:** Vision Pro support

**In-app purchases:** none


### PSIS4

[App page](https://appshunter.io/ios/app/psis4/id6460007747)

**In-app purchases:** none


## Frequently asked questions

### Is PSIS Sen Sok free?

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

### Is PSIS4 free?

PSIS4 is free to download, with no in-app purchases.

### Which is updated more often, PSIS Sen Sok or PSIS4?

PSIS Sen Sok ships an update monthly, and PSIS4 every 20 months. Most recently, PSIS Sen Sok was updated on October 8, 2026 and PSIS4 on September 22, 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.*