GemCommunity vs Reaction test
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GemCommunity
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Main functions: It can receive the call request of our visual building system. After receiving the call request, the door machine can be controlled to unlock. After opening Bluetooth, we can call the Bluetooth unlock function and control the door machine to unlock. It can control the smart home connected to our company's indoor computer.
Reaction test
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《Reaction Test》是一个测试反应能力的应用。 【应用内容】 1、测试开始后，你只需要触摸屏幕便可改变飞机的飞行方向，到达终点即可获得胜利，操作十分简单 2、测试分为场景冒险和无边探索两种模式，场景冒险可解锁更多奇妙场景，无边探索可不断挑战自己的飞行记录 【应用特色】 1、飞行玩法刺激有趣 2、花样航道秀出飞行技巧 3、躲避障碍物抵达游戏终点 4、无边探索挑战自我极限
Screenshots
Verdict
The clearest difference is ads: GemCommunity at none against Reaction test's shown. Reaction test's advantage is iOS requirement (11.0 vs 13.0). On price, update cadence, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GemCommunity ships an update every 3 months, Reaction test every 5 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | GemCommunity | Reaction test |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months — better | Every 5 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 233 MB | 201 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Gemvary Technologies Co.,Ltd | 栩杰 訚 |
In-app purchases
GemCommunity
No in-app purchases
Reaction test
No in-app purchases
