CycloTT - Bike Race Training

CycloTT is an app for bicycle training of simulated 1km time trial on roads, not on a track.

Times of distances on 250m truck (125m, 250m, 375m, 500m, 625m, 750m, 875m, 1km) and also on 400m truck (200m, 400m, 600m, 800m, 1km) are measured.
Furthermore, based on the measured time, the acceleration rate (125m-250m, 250m-375m and 200m-400m) and average deceleration rate (after 375m for 250m track, after 400m for 400m track) are calculated and displayed.
For distances over 1km, times are measured up to 100km every 1km.
All measured times are stored and can be checked after training.
Please use it with safety first. Please comply with the law when using it on public roads.

(How to use)
1. Fix the iPhone (or iPad with GPS) with CycloTT installed on your bicycle.
2. Tap the Start button (or Start / Repeat button). If the bicycle is stopping, “In Prep" is displayed, and if the bicycle is moving or the device isn’t capturing GPS signal, "Waiting for Stop" is displayed. (If the device isn’t capturing GPS signal, "GPS" mark to the left of the CycloTT logo shows in thin gray.)
3. When the message “Ready Go!" Is displayed (You will be notified by sound at the same time), start at your own timing. When your bicycle starts, measurement starts and "Measurement Started" is displayed. The screen becomes a green image during measurement.
4. If your bicycle stops, the measurement will finish and "Finished" will be displayed.
5. If the Start / Repeat button was tapped, after "Finished", "Waiting for Stop" is displayed to prepare for the next measurement.

(Button function)
Stop: The measurement will end immediately.
Start: Makes the measurement only once.
Start Repeat: Repeats the measurement.
copy: Puts the displayed result in the clipboard of the device. You can paste the results into other apps (such as email).
▲newer: After displaying the past result with ▼older button, tap this button to return to the newer results.
▼older: Displays past results from the stored history.
200 / 400: Selects one-round distance of the track to be simulated.
↑ / ↓: Page scroll. These buttons are enable when there are other results behind while viewing history.

(Large speed display on the screen)
You can turn it on and off by pressing the Stop button twice in the stopping state (when neither the Start button nor the Start / Repeat button is tapped).

(Sensitivity setting for start sensing)
In the stopping state, tap buttons "copy → ▲newer → ▼older → ▲newer → ▲newer" to open the setting window at the top of the screen. You can select 5 levels of sensitivity. Adjust if there are many false start sensing or if the response is slow. Probably no adjustment is necessary.

(Formulas of acceleration rates) (note: T(125) means time at 125m。Td(250-125)=T(250)-T(125))
125m-250m acc. rate = -((Td(250-125 - T(125))) / T(125) x 100)
250m-375m acc. rate = -((Td(375-250) - Td(250-125)) / Td(250-125) x 100)
200m-400m acc. rate = -((Td(400-200) - T(200)) / T(200) x 100)

(Formulas of deceleration rates) (note: D(375-500) means deceleration rate of 375m-500m range）
e.g. D(375-500) = (Td(500-375) - Td(375-250)) / Td(375-250) x 100
Average deceleration rate(250m track) = (D(375-500) + D(500-625) + D(625-750) + D(750-875) + D(875-1000)) / 5

e.g. D(400-600) = (Td(600-400) - Td(400-200)) / Td(400-200) x 100
Average deceleration rate(400m track) = (D(400-600) + D(600-800) + D(800-1000)) / 3

If there is no data up to 1km, the average deceleration rate is calculated within the range where the data exists.

(Note)
1000 cases of measurement history are stored even if you quit CycloTT.
When you uninstall and reinstall CycloTT, the stored measurement history will be deleted.
Dark mode compatible.
No advertisement in the app.
CycloTT does not work on iPads without GPS.
If the GPS signal is weak, the operation may become unstable.
The author is not responsible for any accidents or violations while using CycloTT.

CycloTT - Bike Race Training
Ⓒ 2021 Takao Ichimura