SmartBlue vs Court4u
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SmartBlue
This application sends push notifications to your device. It utilizes Bluetooth Low Energy for connectivity.
- Bluetooth Low Energy connectivity
- Push notification delivery
- Device integration
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SmartBlue is a APP application that push notification to your device through bluetooth low energy connected.
Court4u
This app connects tennis players with available courts at local clubs. It digitizes court booking, previously managed manually, making it easier for both clubs and players to find and reserve court time. Features include tournament management and game statistics.
- Online court booking
- Club tournament management
- Game and working time statistics
- Multiple profile support
- Digital court occupancy
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This app takes over the court occupancy of tennis clubs, which was previously operated in paper form. It brings the clubs' free tennis courts together with the players. Tennis clubs can use this app to make their tennis courts available for online occupancy. Tennis players can use these tennis courts easily and simply with this app. In addition, the app offers the following features: - Tournament management for club tournaments - Game and working time statistics - Quick profile change for use with multiple profiles For questions and help, please contact our support at info@court4u.de or visit the 'Help, Contact, FAQs' section in the app
Screenshots
Verdict
The clearest difference is review sentiment: Court4u at 67% against SmartBlue's 5%. Court4u also leads on update cadence (fortnightly vs every 5 weeks). SmartBlue's advantage is iOS requirement (8.0 vs 12.2). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SmartBlue ships an update every 5 weeks, Court4u fortnightly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | SmartBlue | Court4u |
|---|---|---|
| Price | Free | Free |
| Rating | 1.6 (32 ratings) — better | — |
| Positive reviews | 5.1% of reviews | 66.7% of reviews — better |
| Number of ratings | 32 — better | — |
| Update frequency | Every 5 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 12.2 |
| Further details — not scored | ||
| Size | 21 MB | 84 MB |
| Age rating | 4+ | 4+ |
| Developer | 文杰 俞 | Andy Grothe |
Customer experience
SmartBlue
Court4u
In-app purchases
SmartBlue
No in-app purchases
Court4u
No in-app purchases
