# SIM vs Medusa Interface for Hydra

The clearest difference is review sentiment: Medusa Interface for Hydra at 100% against SIM's 43%. Medusa Interface for Hydra also leads on in-app purchases (none vs 24) and rating (5.0 vs 4.6). SIM's advantage is ratings volume (445 vs 2) and update cadence (every 2 weeks vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SIM sells 24 one-off in-app purchases. Medusa Interface for Hydra asks for nothing beyond the download.

Medusa Interface for Hydra holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: SIM has 445 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 43% of SIM's written reviews are positive against 100% of Medusa Interface for Hydra's.

SIM ships an update every 2 weeks, Medusa Interface for Hydra monthly. The most recent releases landed on October 12, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | SIM | Medusa Interface for Hydra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (445 ratings)](https://appshunter.io/ios/app/sim-dashboard/id1672925903/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/medusa-interface-for-hydra/id6775978400/reviews)** |
| Number of ratings | **445** | 2 |
| Positive reviews | 42.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 108 MB | 56 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Christian Hausmann](https://appshunter.io/developer/1672925905) | [POWER HUNGRY PERFORMANCE, INC.](https://appshunter.io/developer/6775978402) |

## What reviewers say

### SIM

[App page](https://appshunter.io/ios/app/sim-dashboard/id1672925903)

Transform your smartphone or tablet into a customizable auxiliary display for racing, truck, flight, and farming simulations. Design your own dashboard with a variety of widgets and share your creations with a community of users. Unlock full potential with in-app purchases.

**Highlights:** Freely configurable auxiliary display, Easy dashboard editor, Large number of widgets, Community designs download/share, Virtual button box for PC, Personalized layouts

**In-app purchases (24)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TDU Solar Crown | $0.99 | one-time |
| F1 23 (Upgrade) | $0.99 | one-time |
| F1 24 (Upgrade) | $0.99 | one-time |
| BeamNG.drive | $1.49 | one-time |
| Le Mans Ultimate (PC) | $1.99 | one-time |
| The Bus | $2.99 | one-time |
| Forza Horizon 4 & 5 | $2.99 | one-time |
| Farming Simulator 25 (Upgrade) | $2.99 | one-time |
| F1 2021 (Upgrade) | $2.99 | one-time |
| WRC (EA SPORTS) (PC) | $2.99 | one-time |
| GT Sport | $2.99 | one-time |
| PC Button Box | $3.79 | one-time |
| Forza Motorsport 2023 & 7 | $3.99 | one-time |
| GT7 | $3.99 | one-time |
| F1 25 | $4.49 | one-time |
| MS Flight Simul. 2024 & 2020 | $4.49 | one-time |
| Farming Simulator 22 | $4.49 | one-time |
| Farming Simulator 25 | $4.49 | one-time |
| F1 23 | $4.49 | one-time |
| F1 24 | $4.49 | one-time |
| Assetto Corsa | $4.79 | one-time |
| iRacing | $4.79 | one-time |
| ETS2 & ATS | $5.99 | one-time |
| PRO | $12.99 | one-time |

**What reviewers like**

- 👍 Works well for desired purpose
- 👍 Easy to use and setup
- 💡 Amazing data reading and display
- 👍 Good for sim racing
- 👍 Saves money on hardware

**What reviewers complain about**

- 👎 Free version too limited
- 👎 Paid version issues
- 👎 Crashing on iOS
- 👎 Not working on PS5
- 👎 Broken after updates

**Reported bugs**

- Free version too limited (3 widgets)
- Can't get money back for accidental purchase
- Time slip on drag times not loading
- ACC on PS5 not working
- iOS app not updated for AC Evo

**Requested features**

- Add Assetto Corsa Rally support
- Working PSI gauge for Beamng drive
- Remote dashboard studio for iOS
- More engine info for Beamng
- Add Farming Simulator 25 to console


### Medusa Interface for Hydra

[App page](https://appshunter.io/ios/app/medusa-interface-for-hydra/id6775978400)

Control your vehicle's Hydra Chip wirelessly via Bluetooth. Switch between different performance tunes instantly from your phone, customize tune names, and manage multiple devices. A demo mode is available to explore features without hardware.

**Highlights:** Bluetooth control for Hydra Chip, Quick tune switching, Customizable tune names, Multi-device memory, Demo Mode

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

**In-app purchases:** none


## Frequently asked questions

### Is SIM free?

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

### Is Medusa Interface for Hydra free?

Medusa Interface for Hydra is free to download, with no in-app purchases.

### Which has better reviews, SIM or Medusa Interface for Hydra?

Medusa Interface for Hydra is rated higher. SIM averages 4.6 out of 5 from 445 ratings, while Medusa Interface for Hydra averages 5.0 from 2 ratings.

### Do SIM or Medusa Interface for Hydra have ads?

Neither SIM nor Medusa Interface for Hydra shows ads.

### Which is updated more often, SIM or Medusa Interface for Hydra?

SIM ships an update every 2 weeks, and Medusa Interface for Hydra monthly. Most recently, SIM was updated on October 12, 2026 and Medusa Interface for Hydra on October 1, 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.*