# I4 Client vs eX

The clearest difference is update cadence: eX at every 3 weeks against I4 Client's every 7 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.

I4 Client ships an update every 7 months, eX every 3 weeks. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | I4 Client | eX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Size | 5 MB | 57 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sumatra Software b.v.](https://appshunter.io/developer/702923467) | [eX:plain](https://appshunter.io/developer/1416674247) |

## What reviewers say

### I4 Client

[App page](https://appshunter.io/ios/app/i4-client/id702923464)

**Features:** macOS Compatibility

**In-app purchases:** none


### eX

[App page](https://appshunter.io/ios/app/explain-i-lop/id6746798609)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is I4 Client free?

I4 Client is free to download, with no in-app purchases.

### Is eX free?

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

### Do I4 Client or eX have ads?

Neither I4 Client nor eX shows ads.

### Which is updated more often, I4 Client or eX?

I4 Client ships an update every 7 months, and eX every 3 weeks. Most recently, I4 Client was updated on September 9, 2026 and eX on September 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.*