# X vs Charging Engine

The clearest difference is rating: Charging Engine at 4.8 against X's 1.4. Charging Engine also leads on ratings volume (11K vs 7). X's advantage is in-app purchases (none vs 12). On price, update cadence, 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. X asks for nothing beyond the download.

Charging Engine holds the better App Store score, 4.8 against 1.4. That said, the two scores are not equally well evidenced: Charging Engine has 11K ratings behind it against 7, so its average is the more settled of the two.

X ships an update every 5 weeks, Charging Engine every 6 weeks. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | X | Charging Engine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.4 (7 ratings)](https://appshunter.io/ios/app/x-pack-mini/id1592035732/reviews) | **[4.8 (11K ratings)](https://appshunter.io/ios/app/charging-engine-4kwallpapers/id1602309907/reviews)** |
| Number of ratings | 7 | **11K** |
| Positive reviews | — | 51.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | **Free** | Subscription |
| Size | 64 MB | 112 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ShanTou City Vison Electronictechnology Co., Ltd.](https://appshunter.io/developer/1388222999) | [Bluewolf Technology Limited](https://appshunter.io/developer/1477300424) |

## What reviewers say

### X

[App page](https://appshunter.io/ios/app/x-pack-mini/id1592035732)

Control your drone in real-time via WiFi, capture photos and videos, and apply various filter effects. This application allows for remote flight operation and media recording.

**Highlights:** Real-time video transmission, Remote drone control, Photo and video capture, Multiple filter effects, WiFi connection

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is X free?

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

### Is Charging Engine free?

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

### Which has better reviews, X or Charging Engine?

Charging Engine is rated higher. X averages 1.4 out of 5 from 7 ratings, while Charging Engine averages 4.8 from 11K ratings.

### Do X or Charging Engine have ads?

Neither X nor Charging Engine shows ads.

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

X ships an update every 5 weeks, and Charging Engine every 6 weeks. Most recently, X was updated on October 7, 2026 and Charging Engine on October 14, 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.*