# RAINTREE ISC vs PSIS Mobile

The clearest difference is ads: PSIS Mobile at none against RAINTREE ISC's shown. RAINTREE ISC's advantage is update cadence (monthly vs every 4 months). On price, in-app purchases, device support 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.

RAINTREE ISC ships an update monthly, PSIS Mobile every 4 months. The most recent releases landed on October 9, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | RAINTREE ISC | PSIS Mobile |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 4 months |
| Size | 94 MB | 33 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Panha Sa](https://appshunter.io/developer/1534830463) | [Sokheng Yong](https://appshunter.io/developer/1633787493) |

## What reviewers say

### RAINTREE ISC

[App page](https://appshunter.io/ios/app/raintree-isc/id1625619311)

**Features:** macOS Compatibility

**In-app purchases:** none


### PSIS Mobile

[App page](https://appshunter.io/ios/app/psis-mobile/id1633787491)

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

**In-app purchases:** none


## Frequently asked questions

### Is RAINTREE ISC free?

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

### Is PSIS Mobile free?

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

### Do RAINTREE ISC or PSIS Mobile have ads?

RAINTREE ISC shows ads; PSIS Mobile does not.

### Which is updated more often, RAINTREE ISC or PSIS Mobile?

RAINTREE ISC ships an update monthly, and PSIS Mobile every 4 months. Most recently, RAINTREE ISC was updated on October 9, 2026 and PSIS Mobile on October 25, 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.*