# PowerAssist™ vs Hydra Service

The clearest difference is update cadence: Hydra Service at every 2 weeks against PowerAssist™'s every 5 months. PowerAssist™'s advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PowerAssist™ ships an update every 5 months, Hydra Service every 2 weeks. The most recent releases landed on October 20, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PowerAssist™ | Hydra Service |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (17 ratings)](https://appshunter.io/ios/app/powerassist/id568415084/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 12 MB | 66 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Deere](https://appshunter.io/developer/411445733) | [Keaton Heller](https://appshunter.io/developer/1896757440) |

## What reviewers say

### PowerAssist™

[App page](https://appshunter.io/ios/app/powerassist/id568415084)

Access detailed serial-specific engine information for John Deere equipment. Retrieve engine and aftertreatment details, software versions, manufacturing dates, and emissions certificates by entering the serial number.

**Highlights:** Serial number lookup, Engine and aftertreatment info, Software version details, Manufacturing date, Emissions certificates, Manuals and catalogs

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

**In-app purchases:** none


### Hydra Service

[App page](https://appshunter.io/ios/app/hydra-service/id6770608709)

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

**In-app purchases:** none


## Frequently asked questions

### Is PowerAssist™ free?

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

### Is Hydra Service free?

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

### Do PowerAssist™ or Hydra Service have ads?

Neither PowerAssist™ nor Hydra Service shows ads.

### Which is updated more often, PowerAssist™ or Hydra Service?

PowerAssist™ ships an update every 5 months, and Hydra Service every 2 weeks. Most recently, PowerAssist™ was updated on October 20, 2026 and Hydra Service on October 31, 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.*