# Blu Energy vs Rest Timer for gym

The clearest difference is price: Blu Energy at Free against Rest Timer for gym's $0.99. Blu Energy also leads on update cadence (every 4 days vs every 22 months) and iOS requirement (12.0 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

Blu Energy is free to download; Rest Timer for gym costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Blu Energy ships an update every 4 days, Rest Timer for gym every 22 months. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Blu Energy | Rest Timer for gym |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 22 months |
| Size | 53 MB | 1 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [E2E System and Process Experts Inc.](https://appshunter.io/developer/1517630421) | [Andras Solyom](https://appshunter.io/developer/1517401242) |

## What reviewers say

### Blu Energy

[App page](https://appshunter.io/ios/app/blu-energy/id1547221835)

**Features:** macOS Compatibility

**In-app purchases:** none


### Rest Timer for gym

[App page](https://appshunter.io/ios/app/rest-timer-for-gym/id6739850693)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Blu Energy free?

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

### Is Rest Timer for gym free?

Rest Timer for gym costs $0.99, with no in-app purchases.

### Do Blu Energy or Rest Timer for gym have ads?

Neither Blu Energy nor Rest Timer for gym shows ads.

### Which is updated more often, Blu Energy or Rest Timer for gym?

Blu Energy ships an update every 4 days, and Rest Timer for gym every 22 months. Most recently, Blu Energy was updated on October 27, 2026 and Rest Timer for gym on October 28, 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.*