KOWOLL 28E vs TERRAINA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KOWOLL 28E
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M28E robotic lawnmower is a planned borderless intelligent lawn mower robot, which is applied to the automatic lawn maintenance of the manor yard with a lawn area of 5000 square meters or less. M28E intelligent lawn mower by GNSS difference technology realize cm-level outdoor precise positioning, GNSS/INS data fusion technology for lawn mower attitude information, through the collision sensors to realize intelligent perception of the working environment, have a certain environmental self-learning and adaptive ability, truly autonomous navigation intelligent mowing the lawn, the efficiency of 300m²/h
TERRAINA
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TERRAINA app is the mobile application developed by DCK for Terraina Robotic Lawn Mower, which allows you to control your robot with just a few taps. Register an account and add your mower, then you can check the mower's status, map, tracks and mowing records at any time through the APP, and remotely control the mower to start, pause, charge, etc. What’s more, you can also customize mowing tasks by setting ‘periodic schedule’ and ‘selected mowing zone’. Lawn care has never been smarter and easier. V1.0 core features: 1. Add and manage robots with just a simple click. Enter serial number or scan the QR code on the device to add and manage your robots easily. 2. Easy to check and edit the map. After successfully adding your device, you can view, edit and manage the map and zones through ‘Map management’ function. 3. Customize mowing tasks. With ‘Periodic schedule’ function, you can customize mowing schedules and combine it with ‘Map management’ function to let the machine automatically perform tasks according to the schedule and zones you set. You can also view the mowing track and record of the machine through ‘Mowing record’. 4. Efficient OTA Upgrade: Terraina app uses OTA technology for updating and upgrading, which is more efficient and convenient than the manual method, ensuring that you are the first to experience the latest functions.
Screenshots
Verdict
The clearest difference is iOS requirement: KOWOLL 28E at 10.0 against TERRAINA's 15.0. On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 27, 2026 and October 3, 2026 respectively.
| Parameter | KOWOLL 28E | TERRAINA |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 45 MB | 103 MB |
| Age rating | 4+ | 17+ |
| Developer | Kalman Navigation | Jiangsu Dongcheng M&E Tools Co., Ltd. |
In-app purchases
KOWOLL 28E
No in-app purchases
TERRAINA
No in-app purchases









