Gens Ace vs CastleLink2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gens Ace
Monitor your RC charger and battery status in real-time via Bluetooth. Track charging and discharging progress directly from your iPhone or iPad. Designed for hobbyists and professional racers seeking a safer and smarter power experience.
- Real-time status monitoring
- Bluetooth connectivity
- Charge and discharge tracking
- iPhone and iPad support
- Smart power solutions
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Gens ace is dedicated to becoming the world's most professional brand for RC power system solutions, focusing on field-specific portable smart chargers and battery interconnectivity. Our brand-new mobile app is now available, allowing you to monitor the real-time status of your charger and battery—such as charging and discharging—via Bluetooth on your iPhone or iPad. From entry-level hobbyists to professional racers, Gens ace will continue to deliver a safer, smarter and more seamless experience for using chargers and batteries together. Gens ace, we power your passion.
CastleLink2
Connect to Castle Creations ESCs and BECs via Bluetooth to adjust settings, update firmware, and view data logs. Compatible with a wide range of ESCs and BECs, supporting both B-Link hardware versions.
- Connect to Castle Creations ESCs/BECs
- Adjust settings
- Update firmware
- View data logs
- Supports B-Link adapters
- Wide ESC/BEC compatibility
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Allows you to connect to most Castle Creations ESCs and BECs using the B-Link Bluetooth adapter. Adjust settings, update firmware, and view data logs (on supported products). Compatible with all Cobra, Talon, Copperhead, and X-series ESCs. It will also work with most Mamba and Sidewinder ESCs; as well as the CC BEC Pro and both CC BEC 2.0s. Supports the original B-Link and B-Link 2 hardware versions. Visit www.castlecreations.com/b-link for more information.
Screenshots
Verdict
The clearest difference is rating: CastleLink2 at 5.0 against Gens Ace's 3.0. Gens Ace's advantage is iOS requirement (13.0 vs 26.0). On price, ratings volume, update cadence and ads 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.
CastleLink2 holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 5 and 2 respectively.
Gens Ace ships an update every 3 weeks, CastleLink2 monthly. The most recent releases landed on September 11, 2026 and September 8, 2026 respectively.
| Parameter | Gens Ace | CastleLink2 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (5 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 5 — better | 2 |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 23 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Grepow Battery Co.Ltd. | Castle Creations Inc |
Customer experience
Gens Ace
CastleLink2
In-app purchases
Gens Ace
No in-app purchases
CastleLink2
No in-app purchases
