Comparison

Add vs Tennis Blackbox

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

Head to head
About

Add

Monitor your eBike's performance and status during rides. View battery life, power output, and speed. Access motor details and perform software updates.

Highlights
  • Real-time battery status
  • Power level monitoring
  • Velocity display
  • Motor serial number and software version
  • Software updates
  • Reset motor/kilometer counter
Features
Read full description

The add-e NEXT app can be used to display the most important information during your ride. The dashboard replaces the bicycle speedometer. Here you can easily monitor the actual battery status, power level, velocity and more. The info screen includes some more specific data of your motor, like the serial number, software version, chosen mapping and so on. You can also do software updates, reset the motor or kilometer counter when you switch to settings. The app will be updated from time to time so no need to worry. There will be more functions available in the future.

About

Tennis Blackbox

Read full description

Tennis Blackbox turns your iPhone into a powerful tennis match recorder and analyzer. Use a dual-device setup to capture every rally in 240fps slow motion, then review your play on an iPad or second iPhone. RECORD - Capture matches at 240fps for detailed slow-motion playback. - Seamless recording with no gaps between video segments. - Automatic frame verification ensures full quality capture. ANALYZE - Automatic court direction detection using on-device machine learning. - Ball tracking with trajectory visualization powered by OpenCV. - Browse footage with broad and detailed thumbnail timelines. MULTI-CAMERA CONTROL - Connect multiple iPhones as cameras over your local network. - Live H.264 video preview from each camera at 30fps. - Monitor up to 8 courts with smart resource management. DUAL-DEVICE SYSTEM - iPhone records your match hands-free as the camera. - iPad or second iPhone monitors and analyzes as the controller. - Devices connect automatically over local Wi-Fi. DESIGNED FOR TENNIS - Landscape interface optimized for court-side use. - Save videos to your photo library for easy sharing. - Supports 15 languages. Whether you are a coach breaking down match footage or a player looking to improve your game, Tennis Blackbox gives you the tools to see what you missed on the court.

Screenshots

Add4 screens
Tennis Blackbox4 screens

Verdict

The call

The clearest difference is in-app purchases: Add at none against Tennis Blackbox's 5. Add also leads on iOS requirement (11.0 vs 16.6). Tennis Blackbox's advantage is update cadence (weekly vs every 5 weeks). On price, ads and device support 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. Tennis Blackbox sells 5 one-off in-app purchases. Add asks for nothing beyond the download.

UpkeepUpdate frequency

Add ships an update every 5 weeks, Tennis Blackbox weekly. The most recent releases landed on October 15, 2026 and October 19, 2026 respectively.

Scorecard3 real differences · 5 level
Add versus Tennis Blackbox: the parameters behind the verdict, then further details
ParameterAddTennis Blackbox
PriceFreeFree
Positive reviews33.3% of reviews—
Update frequencyEvery 5 weeksWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better16.6
Further details — not scored
Size35 MB85 MB
Age rating4+4+
DeveloperGP Motion GmbHJee Hoon Park

In-app purchases

None

Add

No in-app purchases

5 purchases

Tennis Blackbox

One-time5
  • 하루 이용권$0.99
  • 하루 이용권$1.99
  • 1주 사용권$6.99
Show 2 more
  • 1달 사용권$14.99
  • 1년 사용권$99.99

Questions

Is Add free?
Add is free to download, with no in-app purchases.
Is Tennis Blackbox free?
Tennis Blackbox is free to download, with in-app purchases available.
Do Add or Tennis Blackbox have ads?
Neither Add nor Tennis Blackbox shows ads.
Which is updated more often, Add or Tennis Blackbox?
Add ships an update every 5 weeks, and Tennis Blackbox weekly. Most recently, Add was updated on October 15, 2026 and Tennis Blackbox on October 19, 2026.

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