# One Window vs MKS IELTS

The clearest difference is ads: MKS IELTS at none against One Window's shown. One Window's advantage is update cadence (every 2 weeks vs monthly). 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.

One Window ships an update every 2 weeks, MKS IELTS monthly. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | One Window | MKS IELTS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Monthly |
| Size | 20 MB | 29 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Campusroot Edutech Private Limited](https://appshunter.io/developer/1741558495) | [INFLANCER TECHNOLOGY PVT. LTD.](https://appshunter.io/developer/1760161904) |

## What reviewers say

### One Window

[App page](https://appshunter.io/ios/app/one-window/id6670320345)

**Features:** macOS Compatibility

**In-app purchases:** none


### MKS IELTS

[App page](https://appshunter.io/ios/app/mks-ielts/id6742656499)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is One Window free?

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

### Is MKS IELTS free?

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

### Do One Window or MKS IELTS have ads?

One Window shows ads; MKS IELTS does not.

### Which is updated more often, One Window or MKS IELTS?

One Window ships an update every 2 weeks, and MKS IELTS monthly. Most recently, One Window was updated on October 15, 2026 and MKS IELTS on October 14, 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.*