Tag Station vs ONWATT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tag Station
Monitor Ruuvi-sensors on all your Apple devices. View temperature, humidity, and air pressure at a glance. Data syncs automatically across your iPhone, iPad, Mac, and Apple Watch via iCloud.
- Ruuvi-sensor monitoring
- Temperature, humidity, air pressure display
- Cross-device iCloud sync
- Apple Watch complications
- Optimized user interface
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The application brings the monitoring of Ruuvi-sensors to all Apple devices. Tag Station works like the official Ruuvi-Station application by reading sensors using Bluetooth. The user interface is optimised so that user can see the temperature, humidity and air pressure of all sensors at the same time. Data is glancable by using iPhone, iPad, Mac or Apple Watch. Best of all, the data syncs automatically across user’s devices as long as the user is signed in with the same iCloud credentials and the iCloud Drive is turned on. This makes it possible to monitor the sensors from the other side of the globe, as long as there is for example a networked Mac computer turned on with the Tag Station application running and measuring the sensors. Considerations: -The Bluetooh range of different devices varies. e.g. Apple Watch doesn't have quite as good Bluetooth range as the iPhone (Apple Watch Ultra hasn't been tested, though). -The app supports all the complications of the Apple Watch, so it can be quickly accessed from any watch face. However, complications do not show measurement data. -The app does not perform measurements in sleep mode on the Mac. -For the time being, the application does not offer history tracking or notifications. Note that Tag Station is not an official Ruuvi product, and that Ruuvi does not provide support for the use of the application or assume any other responsibilities.
ONWATT
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ONWATT Energy is a smart energy management app designed to give you full control over your home battery system. Monitor your energy usage in real-time, optimize when you store and use electricity, and reduce your energy costs effortlessly. Key Features: - Real-time monitoring of battery, solar and grid usage - Smart energy control modes - Backup power insights during outages - Data dashboard with clear energy insights - Easy connection via WiFi Designed for simplicity, built for performance. Take control of your energy with ONWATT.
Screenshots
Verdict
The clearest difference is price: ONWATT at Free against Tag Station's $1.49. ONWATT also leads on iOS requirement (14.0 vs 16.0). Tag Station's advantage is device support (4 vs 2). On ads and in-app purchases 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
ONWATT is free to download; Tag Station costs $1.49 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Tag Station | ONWATT |
|---|---|---|
| Price | $1.49 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac, Apple Watch — better | iPhone, iPod |
| Requires iOS | 16.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 156 MB |
| Age rating | 4+ | 4+ |
| Developer | Pave Vaisanen | Alpha ESS Co., Ltd. |
In-app purchases
Tag Station
No in-app purchases
ONWATT
No in-app purchases









