# Smart vs Sdu e

Smart and Sdu e are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Smart ships an update every 3 months, Sdu e every 2 months. The most recent releases landed on September 30, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Smart | Sdu e |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 20 MB | 77 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [eX:plain](https://appshunter.io/developer/1416674247) | [Lefebvre Sdu B.V.](https://appshunter.io/developer/388422300) |

## What reviewers say

### Smart

[App page](https://appshunter.io/ios/app/smart-e-learning/id1416674248)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sdu e

[App page](https://appshunter.io/ios/app/sdu-e-line/id1589039439)

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart free?

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

### Is Sdu e free?

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

### Do Smart or Sdu e have ads?

Neither Smart nor Sdu e shows ads.

### Which is updated more often, Smart or Sdu e?

Smart ships an update every 3 months, and Sdu e every 2 months. Most recently, Smart was updated on September 30, 2026 and Sdu e on September 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.*