# dDrives vs BluVac

The clearest difference is rating: BluVac at 5.0 against dDrives's 4.5. BluVac also leads on in-app purchases (none vs 1). dDrives's advantage is ratings volume (32 vs 2) and review sentiment (50% vs 36%). On price, update cadence, ads and monetization model there is nothing between them.

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

BluVac holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: dDrives has 32 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 50% of dDrives's written reviews are positive against 36% of BluVac's, so the app with the better star average is not the one people write more warmly about.

dDrives ships an update monthly, BluVac every 2 months. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | dDrives | BluVac |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (32 ratings)](https://appshunter.io/ios/app/ddrives-vfd-help/id1214502123/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/bluvac/id1227222428/reviews)** |
| Number of ratings | **32** | 2 |
| Positive reviews | **50.0% of reviews** | 36.4% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | Free |
| Size | 10 MB | 25 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Evgeny Makarenkov](https://appshunter.io/developer/1214502122) | [measureQuick](https://appshunter.io/developer/1227222427) |

## 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 |


### BluVac

[App page](https://appshunter.io/ios/app/bluvac/id1227222428)

Connect to compatible vacuum gauges via Bluetooth to perform detailed system evacuations. Features timed tests, decay tests, and data recording. Offers advanced reporting, multiple gauge connections, and geolocation for enhanced screenshots.

**Highlights:** Bluetooth gauge connection, Timed evacuation tests, Decay test functionality, Detailed results viewing, mQ Assist integration, Pro Report feature, Connect up to 6 gauges

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is dDrives free?

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

### Is BluVac free?

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

### Which has better reviews, dDrives or BluVac?

BluVac is rated higher. dDrives averages 4.5 out of 5 from 32 ratings, while BluVac averages 5.0 from 2 ratings.

### Do dDrives or BluVac have ads?

Neither dDrives nor BluVac shows ads.

### Which is updated more often, dDrives or BluVac?

dDrives ships an update monthly, and BluVac every 2 months. Most recently, dDrives was updated on October 24, 2026 and BluVac on October 12, 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.*