# LRTK vs OPEN EX

The clearest difference is update cadence: LRTK at weekly against OPEN EX's monthly. OPEN EX's advantage is iOS requirement (15.0 vs 17.0). 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.

LRTK ships an update weekly, OPEN EX monthly. The most recent releases landed on September 23, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | LRTK | OPEN EX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Size | 730 MB | 44 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [レフィクシア株式会社](https://appshunter.io/developer/1599841370) | [RIK Corporation](https://appshunter.io/developer/507134227) |

## What reviewers say

### LRTK

[App page](https://appshunter.io/ios/app/lrtk/id1641216786)

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

**In-app purchases:** none


### OPEN EX

[App page](https://appshunter.io/ios/app/open-ex/id6473357021)

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

**In-app purchases:** none


## Frequently asked questions

### Is LRTK free?

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

### Is OPEN EX free?

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

### Do LRTK or OPEN EX have ads?

Neither LRTK nor OPEN EX shows ads.

### Which is updated more often, LRTK or OPEN EX?

LRTK ships an update weekly, and OPEN EX monthly. Most recently, LRTK was updated on September 23, 2026 and OPEN EX on October 1, 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.*