# Charging Engine vs أوتو

The clearest difference is in-app purchases: أوتو at none against Charging Engine's 12. أوتو also leads on update cadence (every 2 days vs every 6 weeks). Charging Engine's advantage is iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Charging Engine sells 12 in-app purchases, starting at $3.99 per 7 days. أوتو asks for nothing beyond the download.

Charging Engine ships an update every 6 weeks, أوتو every 2 days. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Charging Engine | أوتو |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (11K ratings)](https://appshunter.io/ios/app/charging-engine-4kwallpapers/id1602309907/reviews)** | — |
| Number of ratings | **11K** | — |
| Positive reviews | 51.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Monetization | Subscription | — |
| Size | 112 MB | 65 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bluewolf Technology Limited](https://appshunter.io/developer/1477300424) | [Mohammed abd alalah Abdalalah](https://appshunter.io/developer/1705759700) |

## What reviewers say

### Charging Engine

[App page](https://appshunter.io/ios/app/charging-engine-4kwallpapers/id1602309907)

Enhance your phone's charging experience with dynamic, futuristic animations and live wallpapers. Visualize battery performance and enjoy regular content updates to keep your device looking fresh and engaging.

**Highlights:** Futuristic charging animations, High-definition dynamic screensavers, Dozens of 3D charging wallpapers, Live wallpaper collections, Battery performance monitor, Regular content updates

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChargingEngine Subscription | $3.99 | per 7 days |
| ChargingEngine Subscription | $3.99 | per 7 days |
| Weekly subscription | $4.99 | per 7 days |
| ChargingEngine Subscription | $19.99 | per month |
| ChargingEngine Subscription | $19.99 | per month |
| ChargingEngine Subscription | $19.99 | per month |
| ChargingEngine Subscription | $23.99 | per month |
| ChargingEngine Subscription | $23.99 | per month |
| ChargingEngine Subscription | $69.99 | per year |
| ChargingEngine Subscription | $69.99 | per year |
| ChargingEngine Subscription | $69.99 | per year |
| ChargingEngine lifetime | $69.99 | one-time |

**What reviewers like**

- 🚀 Charging animations are cool
- 👍 Variety of wallpaper options
- 💡 Customizable charging experience

**What reviewers complain about**

- 🔒 Requires subscription to access full features
- 🐛 Buggy and crashes frequently
- 🔋 Drains battery when app is open
- 💸 Misleading about free trial, charges immediately

**Reported bugs**

- Wallpapers don't work as advertised
- App only functions when kept open during charging
- Subscription cannot be easily canceled

**Requested features**

- Add search bar to find desired wallpapers
- Allow users to upload their own photos/videos
- Provide option to mute sound effects
- Make app fully free without subscription


### أوتو

[App page](https://appshunter.io/ios/app/id6795136297)

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

**In-app purchases:** none


## Frequently asked questions

### Is Charging Engine free?

Charging Engine is free to download, with in-app purchases available.

### Is أوتو free?

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

### Do Charging Engine or أوتو have ads?

Neither Charging Engine nor أوتو shows ads.

### Which is updated more often, Charging Engine or أوتو?

Charging Engine ships an update every 6 weeks, and أوتو every 2 days. Most recently, Charging Engine was updated on October 31, 2026 and أوتو on October 29, 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.*