Comparison

USTA Flex vs C2 Tennis

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

USTA Flex

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
Read full description

With USTA Flex, you can play tennis at your level on a court near you, whenever it suits you. Get on the court and enjoy friendly, competitive singles or doubles matches. Whatever your level – beginner or advanced – you will play exciting matches, meet new people and improve your game. Flex leagues are taking place all across the US and all year round for adults over the age of 18. Leagues take place in a round-robin or ladder 2.0 format, and a season generally runs for 8 to 12 weeks. You can arrange matches whenever you want – so it’s ideal if you’re looking to compete around your busy lifestyle. Why you should join More tennis: Play 5-7 level-based matches while making new tennis friends Ultimate flexibility: With our in-app chat, scheduling matches around your life has never been easier. Play when you want, where you want Track your progress: Every match is an opportunity to improve your game and improve your WTN rating Features of the USTA Flex app - Find all you need in one place – entering leagues, setting up matches, inputting scores and match history - In-app chat – easily schedule matches with your opponents with individual and group chats - More to come: Set up your own flex leagues and join local events and communities to get the most out of your tennis Not sure of your level of play? No problem – we’ll find the right group for you using your ITF World Tennis Number, so you play opponents at the right level for you. What’s the ITF World Tennis Number? The ITF World Tennis Number is a rating system for all tennis players across the world. It makes it easier for everyone who plays tennis in US to organize and play against opponents of a similar standard. • A worldwide rating system that ranges from 40 (beginner players) to 1 (pro players). • Has separate ratings for Singles and Doubles players • Uses a sophisticated algorithm to calculate your rating and updates it every time you compete • Counts sets and matches played, which means the more you compete, the more accurate your WTN will be Game on! Download the USTA Flex App today and enter a world where more tennis matches are just a tap away. Join our community of passionate players and discover the joy of playing tennis on your terms. Let’s make every match count with USTA Flex!

About

C2 Tennis

This platform offers structured tennis training for players of all levels, from beginners to competitive juniors and adults. Easily explore programs, book classes, manage your schedule, and stay connected with academy updates and notifications. It focuses on developing technique, mindset, and a love for the sport.

Highlights
  • Browse and book tennis programs
  • View schedules and sessions
  • Manage player profile and account
  • Secure payments and enrollment
  • Academy updates and notifications
  • Professional coaching and training methods
Features
Read full description

C2 Tennis Academy is a comprehensive tennis training platform designed for players and families who want structure, development, and excellence—on and off the court. Our app makes it easy to explore programs, book classes, manage schedules, and stay connected with our academy. Whether you’re a beginner, competitive junior, or adult player, C2 Tennis Academy provides a clear path for growth through professional coaching and proven training methods. Key Features: • Browse and book tennis programs and clinics • View schedules and upcoming sessions • Manage your player profile and account • Secure payments and program enrollment • Stay informed with academy updates and notifications Built by experienced coaches and driven by a passion for player development, C2 Tennis Academy focuses on technique, mindset, discipline, and love for the sport. Join a community committed to long-term growth, confidence, and performance. Developing Champions On and Off the Court.

Screenshots

USTA Flex4 screens
C2 Tennis4 screens

Verdict

The call

The clearest difference is ratings volume: USTA Flex at 752 against C2 Tennis's 7. USTA Flex also leads on iOS requirement (13.0 vs 15.1). C2 Tennis's advantage is rating (5.0 vs 4.8). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

C2 Tennis holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: USTA Flex has 752 ratings behind it against 7, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 7 level
USTA Flex versus C2 Tennis: the parameters behind the verdict, then further details
ParameterUSTA FlexC2 Tennis
PriceFreeFree
Rating4.8 (752 ratings)5.0 (7 ratings) — better
Positive reviews39.3% of reviews—
Number of ratings752 — better7
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.0 — better15.1
Further details — not scored
Size133 MB120 MB
Age rating4+4+
DeveloperUSTAC2 Tennis Academy

Customer experience

USTA Flex

All ratings752 ratings
Positive95.2%
Neutral1.6%
Negative3.2%
Written reviews28 reviews
Positive39.3%
Neutral10.7%
Negative50.0%

C2 Tennis

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

USTA Flex

Reported bugs

11 issues
  • App works when it wants
  • Constant notifications with no messages
  • Cannot toggle back to see schedule
  • WTN score not figured out
  • Unable to login
Show 6 more
  • Cannot sign in with Google SSO
  • Cannot post score
  • Error: could not load data from server
  • Scores could not be inputted
  • Bad at positioning and assignments for ladder matches
  • Trouble to login

Requested features

6 requests
  • Link match times to calendars
  • Calendar in the app
  • Display all scheduled matches
  • Input availability directly
  • Google SSO integration
Show 1 more
  • Match score editing controls

C2 Tennis

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

USTA Flex

No in-app purchases

None

C2 Tennis

No in-app purchases

Questions

Is USTA Flex free?
USTA Flex is free to download, with no in-app purchases.
Is C2 Tennis free?
C2 Tennis is free to download, with no in-app purchases.
Which has better reviews, USTA Flex or C2 Tennis?
C2 Tennis is rated higher. USTA Flex averages 4.8 out of 5 from 752 ratings, while C2 Tennis averages 5.0 from 7 ratings.
Do USTA Flex or C2 Tennis have ads?
Neither USTA Flex nor C2 Tennis shows ads.
Which is updated more often, USTA Flex or C2 Tennis?
USTA Flex ships an update every 3 weeks, and C2 Tennis every 3 weeks. Most recently, USTA Flex was updated on October 24, 2026 and C2 Tennis on October 7, 2026.

Other comparisons