# Fourth eClock vs Energy Saviour

The clearest difference is update cadence: Fourth eClock at every 2 weeks against Energy Saviour's every 9 months. Energy Saviour's advantage is device support (3 vs 1). On price, ads, in-app purchases 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.

Fourth eClock ships an update every 2 weeks, Energy Saviour every 9 months. The most recent releases landed on October 26, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Fourth eClock | Energy Saviour |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 9 months |
| Size | 30 MB | 31 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fourth Limited](https://appshunter.io/developer/407534402) | [DFx Technology Ltd.](https://appshunter.io/developer/1656723563) |

## What reviewers say

### Fourth eClock

[App page](https://appshunter.io/ios/app/fourth-eclock/id1456233088)

**Features:** Vision Pro support

**In-app purchases:** none


### Energy Saviour

[App page](https://appshunter.io/ios/app/energy-saviour/id6444770835)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fourth eClock free?

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

### Is Energy Saviour free?

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

### Do Fourth eClock or Energy Saviour have ads?

Neither Fourth eClock nor Energy Saviour shows ads.

### Which is updated more often, Fourth eClock or Energy Saviour?

Fourth eClock ships an update every 2 weeks, and Energy Saviour every 9 months. Most recently, Fourth eClock was updated on October 26, 2026 and Energy Saviour on October 12, 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.*