# Flux Player vs Engine Displacement Calc

The clearest difference is price: Flux Player at Free against Engine Displacement Calc's $4.99. Flux Player also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On update cadence, ads and in-app purchases there is nothing between them.

Flux Player is free to download; Engine Displacement Calc costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Flux Player ships an update every 2 months, Engine Displacement Calc every 6 weeks. The most recent releases landed on October 23, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Flux Player | Engine Displacement Calc |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[1.8 (45 ratings)](https://appshunter.io/ios/app/flux-player/id324300572/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 22.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 42 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Flux Digital GmbH](https://appshunter.io/developer/324300575) | [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858) |

## What reviewers say

### Flux Player

[App page](https://appshunter.io/ios/app/flux-player/id324300572)

Access and manage various content types like videos, audiobooks, music, and ebooks on your iPhone or iPad.  It supports content from commercial services and provides cloud-based access, syncing your progress and bookmarks across devices.

**Highlights:** Download and access content, Supports DVDs, videos, audiobooks, music, ebooks, Access commercial content, Local and cloud content management, Syncs activities and bookmarks, Tracks recently used content

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- ⭐ Great app
- 🔒 Secure content protection

**What reviewers complain about**

- 🐛 Crashes frequently
- 🔍 Difficult to navigate
- 🔌 Connectivity issues
- 📚 Poor reading experience
- 🔊 Audio playback problems

**Reported bugs**

- Login failures
- Incompatibility with newer iOS versions
- Freezing and white screens
- Inconsistent video playback quality

**Requested features**

- Add printing capability
- Improve highlighting and annotation tools
- Integrate with iTunes for seamless content management
- Implement sleep timer and bookmarking features


### Engine Displacement Calc

[App page](https://appshunter.io/ios/app/engine-displacement-calc/id6761711493)

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

**In-app purchases:** none


## Frequently asked questions

### Is Flux Player free?

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

### Is Engine Displacement Calc free?

Engine Displacement Calc costs $4.99, with no in-app purchases.

### Do Flux Player or Engine Displacement Calc have ads?

Neither Flux Player nor Engine Displacement Calc shows ads.

### Which is updated more often, Flux Player or Engine Displacement Calc?

Flux Player ships an update every 2 months, and Engine Displacement Calc every 6 weeks. Most recently, Flux Player was updated on October 23, 2026 and Engine Displacement Calc on October 18, 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.*