# Add vs Tennis Blackbox

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.

Both are free to download. Tennis Blackbox sells 5 one-off in-app purchases. Add asks for nothing beyond the download.

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

## The numbers

| Metric | Add | Tennis Blackbox |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 35 MB | 85 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GP Motion GmbH](https://appshunter.io/developer/1501600719) | [Jee Hoon Park](https://appshunter.io/developer/1583942288) |

## What reviewers say

### Add

[App page](https://appshunter.io/ios/app/add-e-next/id1501600720)

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:** macOS Compatibility

**In-app purchases:** none


### Tennis Blackbox

[App page](https://appshunter.io/ios/app/tennis-blackbox/id6474873410)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 하루 이용권 | $0.99 | one-time |
| 하루 이용권 | $1.99 | one-time |
| 1주 사용권 | $6.99 | one-time |
| 1달 사용권 | $14.99 | one-time |
| 1년 사용권 | $99.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*