# Hydrogen Sports vs SDTRC

The clearest difference is rating: Hydrogen Sports at 4.1 against SDTRC's 2.0. Hydrogen Sports also leads on update cadence (every 11 days vs every 7 months) and ratings volume (45 vs 3). SDTRC's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Hydrogen Sports holds the better App Store score, 4.1 against 2.0. That said, the two scores are not equally well evidenced: Hydrogen Sports has 45 ratings behind it against 3, so its average is the more settled of the two.

Hydrogen Sports ships an update every 11 days, SDTRC every 7 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Hydrogen Sports | SDTRC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (45 ratings)](https://appshunter.io/ios/app/hydrogen-sports/id1545794573/reviews)** | [2.0 (3 ratings)](https://appshunter.io/ios/app/sdtrc/id1566293301/reviews) |
| Number of ratings | **45** | 3 |
| Positive reviews | 38.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 7 months |
| Monetization | Free | Free |
| Size | 44 MB | 36 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hydrogen Sports LLC](https://appshunter.io/developer/1545794575) | [San Diego Tennis and Raquet Club](https://appshunter.io/developer/1566293303) |

## What reviewers say

### Hydrogen Sports

[App page](https://appshunter.io/ios/app/hydrogen-sports/id1545794573)

Control portable ball machines for tennis and pickleball. Design custom drills or use pre-built routines to improve your game. Adjust target, spin, and speed with an intuitive interface.

**Highlights:** Control ball machines, Tennis and pickleball practice, Custom drill design, Pre-built routines, Adjust target, spin, and speed

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### SDTRC

[App page](https://appshunter.io/ios/app/sdtrc/id1566293301)

Manage your club membership, view statements, and update billing information. Reserve courts for tennis, pickleball, and racquetball, and track your existing bookings.

**Highlights:** Member check-in, View statements, Change billing payment, View personal information, Reserve courts, View court reservations

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Hydrogen Sports free?

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

### Is SDTRC free?

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

### Which has better reviews, Hydrogen Sports or SDTRC?

Hydrogen Sports is rated higher. Hydrogen Sports averages 4.1 out of 5 from 45 ratings, while SDTRC averages 2.0 from 3 ratings.

### Do Hydrogen Sports or SDTRC have ads?

Neither Hydrogen Sports nor SDTRC shows ads.

### Which is updated more often, Hydrogen Sports or SDTRC?

Hydrogen Sports ships an update every 11 days, and SDTRC every 7 months. Most recently, Hydrogen Sports was updated on November 3, 2026 and SDTRC on November 3, 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.*