# CLS Edo vs Zen SmartLearn

The clearest difference is update cadence: CLS Edo at every 3 weeks against Zen SmartLearn's every 8 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.

CLS Edo ships an update every 3 weeks, Zen SmartLearn every 8 months. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | CLS Edo | Zen SmartLearn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 8 months |
| Size | 94 MB | 138 MB |
| Requires iOS | **13.0** | 13.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Deknerd Dot Com Company Limited](https://appshunter.io/developer/1438116411) | [CONICLE COMPANY LIMITED](https://appshunter.io/developer/979282578) |

## What reviewers say

### CLS Edo

[App page](https://appshunter.io/ios/app/cls-edo/id1503144901)

**Features:** macOS Compatibility

**In-app purchases:** none


### Zen SmartLearn

[App page](https://appshunter.io/ios/app/zen-smartlearn/id1560077496)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CLS Edo free?

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

### Is Zen SmartLearn free?

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

### Do CLS Edo or Zen SmartLearn have ads?

Neither CLS Edo nor Zen SmartLearn shows ads.

### Which is updated more often, CLS Edo or Zen SmartLearn?

CLS Edo ships an update every 3 weeks, and Zen SmartLearn every 8 months. Most recently, CLS Edo was updated on October 1, 2026 and Zen SmartLearn on October 10, 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.*