RFECU Performance 2.0 vs KOSO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RFECU Performance 2.0
Connects to your motorcycle's engine computer via Bluetooth to adjust fuel injection, ignition timing, and O2 sensor range. Offers quick mode switching, displays and clears diagnostic trouble codes, and provides real-time engine parameter monitoring with historical data analysis.
- Bluetooth engine connection
- Fuel injection adjustment
- Ignition timing control
- O2 sensor range settings
- Quick mode switching
- Diagnostic trouble code display and clearing
- Real-time engine parameter monitoring
- Historical data analysis
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透過藍芽連接器與噴射機車電腦做溝通, 可以達到以下功能： 1. 電腦調整: - 噴油: -100% ~ +100% - 點火: -30 degCRK ~ +60 degCRK - O2範圍: 可依照油門開度及轉速設定O2運轉於開/閉迴路 - 可變進/排氣閥: 可依照油門開度及轉速設定可變進/排氣閥門運轉於開/閉迴路 2. 快速模式: - 一鍵可快速切換至不同模式, 包含噴油, 點火, O2, 可變進/排氣一鍵快速切換. 3. 故障碼 - 故障碼顯示, 故障內容及排除指示, 故障碼清除 4. 引擎參數顯示及紀錄分析 - 可同時顯示超過60幾個引擎參數內容 - 可繪製成曲線圖顯示參數變化 - 可錄製下所有60幾個參數事後調出檔案進行曲線圖分析 5. 原廠電腦亦支援上述 故障碼 及 引擎參數顯示及紀錄分析 功能
KOSO
Connect to KOSO meters via Bluetooth to fetch trip data, receive maintenance notifications, and view vehicle diagnostics. It also provides weather forecasts, gas prices, and navigation features, with optional synchronized display on compatible vehicle dashboards.
- Bluetooth connectivity to KOSO meters
- Trip record storage
- Fuel and maintenance notifications
- Vehicle diagnosis
- Weather forecast and gas price information
- Navigation and routing
- Virtual dashboard with real-time OBD data
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K Link supports establishing a connection with Koso meters via Bluetooth. When connected, K Link fetches the essential information from remote and store as trip records in App. That information is also used for providing fuel and regular/temporary maintenance notification and vehicle diagnosis. K LINK provides related information beforehand such as the weather forecast info and the instant gas price for a reference to help drivers ready for the trip. K LINK provides a map for finding a destination and routing towards the destination. When connected to the Koso dashboard embed on the vehicle, the turn-by-turn navigation guidance shows on the vehicle dashboard synchronized. You can use a virtual dashboard screen to experience the KOSO's dashboard instruments and monitoring the speed, rev, and other data based on the real-time OBD data.
Screenshots
Verdict
The clearest difference is price: KOSO at Free against RFECU Performance 2.0's $26.99. KOSO also leads on update cadence (every 2 weeks vs every 6 weeks). On ads, in-app purchases, device support and iOS requirement 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
KOSO is free to download; RFECU Performance 2.0 costs $26.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RFECU Performance 2.0 ships an update every 6 weeks, KOSO every 2 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | RFECU Performance 2.0 | KOSO |
|---|---|---|
| Price | $26.99 | Free — better |
| Rating | — | 3.0 (2 ratings) — better |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | — | 2 — better |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 14 MB | 210 MB |
| Age rating | 4+ | 17+ |
| Developer | Release Force Limited Company | Tong Yah Electronic Technology Co., Ltd. |
Customer experience
RFECU Performance 2.0
KOSO
In-app purchases
RFECU Performance 2.0
No in-app purchases
KOSO
No in-app purchases
