eMaaS+行動服務 vs Otrol
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
eMaaS+行動服務
Find parking availability and pay monthly fees at convenience stores. Discover tourist spots and access ferry, flight, and bus schedules. Features include car rental navigation and keyless entry via Bluetooth.
- Parking availability search
- Monthly parking fee payment
- Tourist attraction discovery
- Ferry, flight, and bus schedules
- Car rental navigation
- Bluetooth car door control
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eMaas提供以下特色功能： - 尋找停車場資訊，可隨時掌握同車場空位數 - 月租停車費可至超商繳費 - 觀光景點搜尋及馬祖船運、航空、公車時刻表 App將會詢問權限做為以下用途： - 開啟相機：註冊時拍攝證件認證、租車時導航及拍攝租車車型外觀 - 開啟藍芽：租車前配對，利用手機控制車門之上鎖、解鎖、還車等用途 - 開啟定位：搜尋停車場空位數、立即租車及判斷附近景點距離 - 綁定信用卡：用以繳停車及租車費用
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
eMaaS+行動服務 and Otrol 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.
eMaaS+行動服務 ships an update monthly, Otrol every 2 months. The most recent releases landed on June 3, 2026 and September 14, 2026 respectively.
| Parameter | eMaaS+行動服務 | Otrol |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 13.3% of reviews | — |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 13 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Etrovision Technology | DoubleVision Technology Co., Ltd. |
In-app purchases
eMaaS+行動服務
No in-app purchases
Otrol
No in-app purchases
