# Charging Engine vs LingoFlow

The clearest difference is review sentiment: LingoFlow at 100% against Charging Engine's 52%. LingoFlow also leads on in-app purchases (none vs 12) and rating (5.0 vs 4.8). Charging Engine's advantage is ratings volume (11K vs 2) and iOS requirement (12.0 vs 18). 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. LingoFlow asks for nothing beyond the download.

LingoFlow holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Charging Engine has 11K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 52% of Charging Engine's written reviews are positive against 100% of LingoFlow's.

## The numbers

| Metric | Charging Engine | LingoFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (11K ratings)](https://appshunter.io/ios/app/charging-engine-4kwallpapers/id1602309907/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/lingoflow-reading-in-a-flow/id6773064805/reviews)** |
| Number of ratings | **11K** | 2 |
| Positive reviews | 51.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Monetization | Subscription | **Free** |
| Size | 112 MB | 3 MB |
| Requires iOS | **12.0** | 18 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Bluewolf Technology Limited](https://appshunter.io/developer/1477300424) | [ZHICHENG YAN](https://appshunter.io/developer/6772732770) |

## 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


### LingoFlow

[App page](https://appshunter.io/ios/app/lingoflow-reading-in-a-flow/id6773064805)

This app provides instant, offline translations of copied text directly within your device's Dynamic Island. It offers a private and efficient way to learn foreign languages by reading words and sentences aloud and displaying their translations in real-time.

**Highlights:** Dynamic Island real-time translation, 100% offline functionality, Automatic copy-paste and translation, Local history of last 10 lookups, Native dictionary integration, Multi-language support

**In-app purchases:** none


## Frequently asked questions

### Is Charging Engine free?

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

### Is LingoFlow free?

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

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

LingoFlow is rated higher. Charging Engine averages 4.8 out of 5 from 11K ratings, while LingoFlow averages 5.0 from 2 ratings.

### Do Charging Engine or LingoFlow have ads?

Neither Charging Engine nor LingoFlow shows ads.

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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.*