Device MI vs Otrol
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Device MI
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Testing for triage and grading of devices made easy, quick and accurate.
Otrol
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Otrol allows you to monitor multiple sensor data in real time and automatically control relays. Receive alert message through APP and keeps you up to speed with the latest situation. Provide factory monitoring system, water tower monitoring, water quality detection, electrical gate detection and other solutions ● Wireless transmission: No longer through wired transmission, convenient and safe ● Exception warning: Real-time notification of abnormal occurrence to reduce risks ● Sensing equipment: It can access the user's existing sensor items to save equipment cost ● Intelligent control: Remote control, or automatic control according to the monitoring value ● Cloud platform: Data digitizing for saving data no longer missing Application scenarios such as water quality monitoring, water level detection tower, automatic start pump, factory wastewater discharge, gate induction, etc
Screenshots
Verdict
The clearest difference is update cadence: Device MI at every 2 days against Otrol's monthly. Device MI also leads on device support (3 vs 1) and iOS requirement (9.0 vs 17.6). On price, 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.
Device MI ships an update every 2 days, Otrol monthly. The most recent releases landed on October 1, 2026 and October 19, 2026 respectively.
| Parameter | Device MI | Otrol |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 9.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 14 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | FutureDial Inc. | DoubleVision Technology Co., Ltd. |
In-app purchases
Device MI
No in-app purchases
Otrol
No in-app purchases
