# dDrives vs Appion Central

The clearest difference is rating: dDrives at 4.5 against Appion Central's 2.8. dDrives also leads on review sentiment (50% vs 29%). Appion Central's advantage is in-app purchases (none vs 1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. dDrives sells 1 one-off in-app purchase. Appion Central asks for nothing beyond the download.

dDrives holds the better App Store score, 4.5 against 2.8. Both are backed by a comparable volume of ratings — 29 and 14 respectively. Written reviews point the same way: 50% of dDrives's written reviews are positive against 29% of Appion Central's.

dDrives ships an update monthly, Appion Central every 5 weeks. The most recent releases landed on October 9, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | dDrives | Appion Central |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (29 ratings)](https://appshunter.io/ios/app/ddrives-vfd-help/id1214502123/reviews)** | [2.8 (14 ratings)](https://appshunter.io/ios/app/appion-central/id1455230837/reviews) |
| Number of ratings | **29** | 14 |
| Positive reviews | **50.0% of reviews** | 28.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 10 MB | 35 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Evgeny Makarenkov](https://appshunter.io/developer/1214502122) | [Appion Inc.](https://appshunter.io/developer/978979622) |

## What reviewers say

### dDrives

[App page](https://appshunter.io/ios/app/ddrives-vfd-help/id1214502123)

Access alarm descriptions, troubleshooting guides, and user manuals for Danfoss VLT drives. This professional tool provides essential information for commissioning and service, supporting a wide range of drive models.

**Highlights:** Alarm descriptions, Troubleshooting guides, User manual links, Support for multiple VLT drive models, Multilingual alarm descriptions

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Drives | $1.99 | one-time |


### Appion Central

[App page](https://appshunter.io/ios/app/appion-central/id1455230837)

Manage your HVAC tools and connect to the web portal. This app provides a mobile interface for your Appion products.

**Highlights:** Manage Appion products, Interface with Appion Portal, Mobile tool management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is dDrives free?

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

### Is Appion Central free?

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

### Which has better reviews, dDrives or Appion Central?

dDrives is rated higher. dDrives averages 4.5 out of 5 from 29 ratings, while Appion Central averages 2.8 from 14 ratings.

### Do dDrives or Appion Central have ads?

Neither dDrives nor Appion Central shows ads.

### Which is updated more often, dDrives or Appion Central?

dDrives ships an update monthly, and Appion Central every 5 weeks. Most recently, dDrives was updated on October 9, 2026 and Appion Central on October 19, 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.*