# U vs Endura® Delta

The clearest difference is update cadence: U at every 3 months against Endura® Delta's every 12 months. U also leads on iOS requirement (9.0 vs 12.0). 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.

U ships an update every 3 months, Endura® Delta every 12 months. The most recent releases landed on September 29, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | U | Endura® Delta |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 12 months |
| Size | 16 MB | 21 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Global Time Solutions](https://appshunter.io/developer/969471175) | [RENSON®](https://appshunter.io/developer/598936600) |

## What reviewers say

### U

[App page](https://appshunter.io/ios/app/u-time/id948856401)

**Features:** macOS Compatibility

**In-app purchases:** none


### Endura® Delta

[App page](https://appshunter.io/ios/app/endura-delta/id1098576470)

**In-app purchases:** none


## Frequently asked questions

### Is U free?

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

### Is Endura® Delta free?

Endura® Delta is free to download, with no in-app purchases.

### Do U or Endura® Delta have ads?

Neither U nor Endura® Delta shows ads.

### Which is updated more often, U or Endura® Delta?

U ships an update every 3 months, and Endura® Delta every 12 months. Most recently, U was updated on September 29, 2026 and Endura® Delta on October 8, 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.*