# Træn Smart vs D

The clearest difference is iOS requirement: Træn Smart at 12.4 against D's 15.5. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Træn Smart ships an update every 11 days, D weekly. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Træn Smart | D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 days | **Weekly** |
| Size | 17 MB | 66 MB |
| Requires iOS | **12.4** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Trade eXpansion](https://appshunter.io/developer/1207651462) | [Booking Board](https://appshunter.io/developer/1698899191) |

## What reviewers say

### Træn Smart

[App page](https://appshunter.io/ios/app/trn-smart/id1664090627)

**Features:** macOS Compatibility

**In-app purchases:** none


### D

[App page](https://appshunter.io/ios/app/d-lux-boxen/id6745787257)

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

**In-app purchases:** none


## Frequently asked questions

### Is Træn Smart free?

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

### Is D free?

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

### Do Træn Smart or D have ads?

Neither Træn Smart nor D shows ads.

### Which is updated more often, Træn Smart or D?

Træn Smart ships an update every 11 days, and D weekly. Most recently, Træn Smart was updated on October 19, 2026 and D on October 24, 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.*