# USTA Flex vs TENNIIX

The clearest difference is rating: USTA Flex at 4.8 against TENNIIX's 2.7. USTA Flex also leads on ratings volume (642 vs 47) and iOS requirement (13.0 vs 15.0). On price, review sentiment, update cadence and ads there is nothing between them.

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

USTA Flex holds the better App Store score, 4.8 against 2.7. That said, the two scores are not equally well evidenced: USTA Flex has 642 ratings behind it against 47, so its average is the more settled of the two. Written reviews complicate that: 41% of USTA Flex's written reviews are positive against 42% of TENNIIX's, so the app with the better star average is not the one people write more warmly about.

USTA Flex ships an update fortnightly, TENNIIX every 3 weeks. The most recent releases landed on October 19, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | USTA Flex | TENNIIX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (642 ratings)](https://appshunter.io/ios/app/usta-flex/id6446393326/reviews)** | [2.7 (47 ratings)](https://appshunter.io/ios/app/tenniix/id6752846732/reviews) |
| Number of ratings | **642** | 47 |
| Positive reviews | 40.7% of reviews | **41.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 133 MB | 73 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [USTA](https://appshunter.io/developer/327455872) | [Shenzhen Enhanced Power Technology Co., Ltd.](https://appshunter.io/developer/1863905454) |

## What reviewers say

### USTA Flex

[App page](https://appshunter.io/ios/app/usta-flex/id6446393326)

Find and play competitive tennis matches at your level on courts near you. Arrange games flexibly around your schedule and meet new players. Track your progress and improve your game with level-based singles or doubles matches.

**Highlights:** Find level-based tennis matches, Flexible scheduling with in-app chat, Singles and doubles competition, Track match history and progress, Utilizes ITF World Tennis Number for matchmaking, Organize and enter leagues

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

**In-app purchases:** none


### TENNIIX

[App page](https://appshunter.io/ios/app/tenniix/id6752846732)

Control your tennis ball machine wirelessly to customize serve speed, spin, and landing points. Analyze training data to improve your game. Perfect for solo practice and match preparation.

**Highlights:** Wireless ball machine control, Adjust serve speed and spin, Customize landing points, Create custom training programs, Real-time data tracking, Analyze training effectiveness

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

**In-app purchases:** none


## Frequently asked questions

### Is USTA Flex free?

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

### Is TENNIIX free?

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

### Which has better reviews, USTA Flex or TENNIIX?

USTA Flex is rated higher. USTA Flex averages 4.8 out of 5 from 642 ratings, while TENNIIX averages 2.7 from 47 ratings.

### Do USTA Flex or TENNIIX have ads?

Neither USTA Flex nor TENNIIX shows ads.

### Which is updated more often, USTA Flex or TENNIIX?

USTA Flex ships an update fortnightly, and TENNIIX every 3 weeks. Most recently, USTA Flex was updated on October 19, 2026 and TENNIIX on October 15, 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.*