EVVR vs ctrl4U
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EVVR
This app allows you to manage and connect all your smart-home devices for intuitive control. It offers local data processing and secure privacy for various automation scenarios. Requires a specific controller to function.
- Expandable compatibility with multiple protocols
- Local control and secure data storage
- Capture device states and set scenes
- Real-time notifications for home events
- Thousands of automation templates
- Downloadable plugins and integration drivers
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Working together with an EVVR controller, EVVR App helps you to manage your home automation systems intuitively, connects all your smart-home devices, and makes them work together in one app. The EVVR App empowers the EVVR Energy Monitoring Smart Plug & Relay, which works with Apple HomeKit, to provide a green and remotely controllable lifestyle wherever you are. EVVR App runs smart home control completely locally with professional and secure data protection, ensuring unparalleled user privacy for various automation scenarios such as homes and commercial usages. *EVVR App must be working with an EVVR controller. Main features: Expandable Compatibility EVVR App supports Zigbee, Z-Wave, Wi-Fi, BLE, LoRa and Thread protocols and is compatible with millions of smart devices for various smart control usages, such as smart sensors, smart lighting, smart security, and smart health. Local Control and Data Storage Support private cloud connection. All your private data is processed and stored in real-time and locally. Enterprise-class data encryption ensures unparalleled user privacy when you access the system remotely. Capture instants and set scenes EVVR App can capture the real-time states of your smart devices and add them into the smart scenes' setting automatically. Real-time Notifications Keep an eye on your home anytime and anywhere with the real-time notifications pushed to your phone if anything unusual happens or a new member is added. Set up Automations at ease EVVR App offers thousands of Automation templates, making smart home automation as simple as never before. No more need to create Automations by yourselves, you can find the automation templates you want, and set them up for your home or your customers in a flash. EVVR Store EVVR App offers thousands of Automation templates, plugins, and integration drivers for unlimited downloading.
ctrl4U
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This is a smart Bluetooth ring specifically designed for sports scenarios. By pairing with your action camera or smartphone via Bluetooth, it transforms into a wearable wireless remote control. During activities, you can capture photos or start/stop recording with a single tap without touching your device. When connected to a smartphone, it also enables convenient management of music playback, volume adjustment, remote photo capture, file browsing, and even page‑turning for reading—consolidating frequent operations at your fingertips and significantly enhancing control efficiency and immersive experience during sports. 这是一款专为运动场景设计的智能蓝牙戒指。通过蓝牙与你的运动相机或智能手机配对,它就变成了一个可穿戴的无线遥控器。在活动期间,您无需触摸设备,只需轻轻一点即可拍摄照片或开始/停止录制。当连接到智能手机时,它还可以方便地管理音乐播放、音量调节、远程照片拍摄、文件浏览,甚至翻页阅读——将频繁的操作整合到您的指尖,显著提高运动期间的控制效率和沉浸式体验。
Screenshots
Verdict
EVVR and ctrl4U are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
EVVR ships an update every 3 months, ctrl4U every 4 months. The most recent releases landed on October 21, 2026 and October 27, 2026 respectively.
| Parameter | EVVR | ctrl4U |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.1 — better | 14.0 |
| Further details — not scored | ||
| Size | 145 MB | 2 MB |
| Age rating | 17+ | 4+ |
| Developer | EVVR ApS | Eagle Kingdom Technologies(shenzhen) Co., Ltd. |
In-app purchases
EVVR
No in-app purchases
ctrl4U
No in-app purchases









