價格：免費
更新日期：2019-07-10
檔案大小：4.9M
目前版本：2.4.8
版本需求：Android 4.0.3 以上版本
官方網站：http://cdacrr.blogspot.com
Email：bikecdacrr@gmail.com
聯絡地址：Pierre LEDAC 19, Avenue du Vercors 38240 Meylan France
Bike computer to ride faster by improving your aerodynamic position and testing gear/equipment. Among other data, it monitors CdA (drag*area) and Crr (rolling resistance) coefficients, during races or dedicated testing sessions.
Requires an Android smartphone with built-in ANT+ support (or you would need an ANT+ adapter) and sensors for speed and power:
ANT+ powermeters currently supported (as successfully tested) are:
-PowerTap hub (records speed so additional sensor is not needed)
-SRM
ANT+ speed sensors currently supported are:
Avoid any magnet less speed sensor, their accuracy is not as good.
Read the help to quickly see how to use the app: http://cdacrr.blogspot.fr/p/help.html
Support: bikecdacrr@gmail.com
Current features:
-Classic lap mode (default, click each lap) where it is possible to:
-Measure Crr on ridden laps at slow speed (<15km/h)
-Measure CdA on ridden laps at high speed (>25km/h)
-Model uses air density accurately computed with weather station data and detected sensors
-Configurable field to switch between different fields (altitude, cadence, bike direction,...)
-One FIT file and several CSV files are stored and can be sent by mail for post analysis
-Hear/record voice message each lap
-Activate cloud storage to list/edit previous runs later
-Plot virtual vs real elevation (barometer needed)
-Measure road vibration with phone accelerometer if available
-ANT+ devices Id are stored and searched preferably
-Record also cadence and heart rate from Ant+ sensors
-Wind forecast on location where you plan to field test
-Possible to enable/disable auto-zero feature of the powermeter
The app detects also:
-data drops (ANT+ events not received) or weird speed spikes
-ANT+ sensor battery status
This version is free, but more features are possible by switching to the premium version:
Premium features:
It includes other modes (described here):
-Defined lap length mode (for velodrome, click once to start the run)
-Automatic segment mode (needs barometer) to record apparent CdA during a ride
-Time trial mode (needs barometer) to get CdA at the end of the race
-Criterium mode to get apparent CdA lap per lap
-Training mode
And some optional devices:
-Support Weather Meter anemometer to record air speed (to get a higher precision on CdA figures during rides with automatic segment mode)
-Support Garmin tempe sensor to record local temperature (higher accuracy on air density calculation)
-Possible to use Bluetooth headset to hear/record voice messages (very useful during velodrome testing)
Download the key for the premium version here
Known bugs:
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