Racing Circuit Lap Timer
Easy and accurate measurement
FreeOffers In-App Purchases
2.17.0for iPhone, iPad and more
Age Rating
Racing Circuit Lap Timer Screenshots
About Racing Circuit Lap Timer
"Racing Circuit Lap Timer" is a lap timer for racing circuits using the GPS function of iPhone.
You can easily measure lap times and sector times with iPhone.
Approx. 40,000 laps of measured lap times are saved and can be viewed and shared.
(Measurable circuits) Planned to be added in the future.
(Japan)
Aomori Speed Park
Asan Circuit
Auto Land Tsukude
Autopolis Racing Course
Bihoku Highland Circuit Course A
Bihoku Highland Circuit Course B
Central Circuit
Chiba Kita Pocket bike Course
Ebisu Circuit East Course
Fuji International Speedway Racing Course
Hero Sinoi Circuit
Honjo Circuit
HSR Kyusyu Circuit Course
Ipponkunugi Speedway (ccw)
Ipponkunugi Speedway (cw)
Iwai Circuit Road Course
Keiyou Speed Land
Kota Circuit
Ksk Circuit
Link Circuit
Mihama Circuit Full Course
Mobara Twin Circuit East Course
Motegi Road Course (Full)
Narita Motor Land (ccw)
Narita Motor Land (cw)
Nihonkai Maze Circuit
Nikko Circuit
Okayama International Circuit
Okegawa Sports Land
Owara Circuit
Sodegaura Forest Raceway
Southern Circuit
Sugo International Racing Course
Spa Naoiri
Spa Nishiura Motor Park (Forward)
Spa Nishiura Motor Park (Reverse)
Suzuka Circuit Racing Course
Suzuka Circuit South Course
Takasu Circuit
Tokachi Speedway Clubman Course
Tokachi Speedway Grand Prix Course
TS Takata Circuit
Tsukuba Circuit Course1000
Tsukuba Circuit Course2000
Tsukuruma Circuit Nasu
YZ Circuit East Course (ccw)
YZ Circuit East Course (cw)
(France)
Circuit Paul Ricard
(Taiwan)
Lihpao G2 Circuit
(United Kingdom)
Donington Park Circuit
(United States)
Blackhawk Farms Raceway
Laguna Seca
Waterford Hills Road Racing
(About mounting the iPhone)
- Mount the iPhone to the machine where the iPhone screen can be seen by the driver/rider.
- For 4-wheel machines, GPS reception is more stable under the windshield than under the roof.
- If you don't need to see the time while driving, you can put the app in stand-by mode and put the iPhone in your pocket.
(iPhone settings)
- Turn on Location Services.
- Allow LOCATION ACCESS to LapTimer.
- Turn on Precise Location.
(How to use)
1) Tap the "Settings" button at the bottom center of the screen to open the settings window. Select the circuit you want to measure. You can also select the speed unit and reset the best lap time in the settings window.
2) Tap the "Start" button at the bottom right of the screen to enter stand-by mode, the timer section at the top of the screen will display "Measurement will start when crossing the finish line", and the button will change to “Cancel/Stand-by". GPS is working when the speedometer on the screen changes to numbers.
3) When you enter the course, pass the final corner and pass the finish line at a speed of 15km/h / 9.3mph or more, the timer at the top of the screen will start running and measurement will start, and the "Cancel/Stand-by" button will change to the “Stop" button.
4) After that, the lap time will be updated every time you cross the finish line. The sector time is also updated each time.
5) When you finish running and tap the "Stop" button, the measurement will end and return to stand-by mode, and the button will change to "Cancel/Stand-by".
6) Tap the "Cancel/Stand-by" button to exit stand-by mode and the button will change to “Start".
7) Tap the "Results" button at the bottom left of the screen when the button at the bottom right of the screen is "Start" or "Cancel/Stand-by" to display all saved results. Best/2nd/3rd lap times and top speeds are also easily visible. You can select the part you need and copy or share it.
Please see "App support” about followings.
(About screen display)
(About the measurement line)
(Note)
The developer assumes no responsibility for any accident, violation, loss or claims by third parties which may arise from the use of this app.
You can easily measure lap times and sector times with iPhone.
Approx. 40,000 laps of measured lap times are saved and can be viewed and shared.
(Measurable circuits) Planned to be added in the future.
(Japan)
Aomori Speed Park
Asan Circuit
Auto Land Tsukude
Autopolis Racing Course
Bihoku Highland Circuit Course A
Bihoku Highland Circuit Course B
Central Circuit
Chiba Kita Pocket bike Course
Ebisu Circuit East Course
Fuji International Speedway Racing Course
Hero Sinoi Circuit
Honjo Circuit
HSR Kyusyu Circuit Course
Ipponkunugi Speedway (ccw)
Ipponkunugi Speedway (cw)
Iwai Circuit Road Course
Keiyou Speed Land
Kota Circuit
Ksk Circuit
Link Circuit
Mihama Circuit Full Course
Mobara Twin Circuit East Course
Motegi Road Course (Full)
Narita Motor Land (ccw)
Narita Motor Land (cw)
Nihonkai Maze Circuit
Nikko Circuit
Okayama International Circuit
Okegawa Sports Land
Owara Circuit
Sodegaura Forest Raceway
Southern Circuit
Sugo International Racing Course
Spa Naoiri
Spa Nishiura Motor Park (Forward)
Spa Nishiura Motor Park (Reverse)
Suzuka Circuit Racing Course
Suzuka Circuit South Course
Takasu Circuit
Tokachi Speedway Clubman Course
Tokachi Speedway Grand Prix Course
TS Takata Circuit
Tsukuba Circuit Course1000
Tsukuba Circuit Course2000
Tsukuruma Circuit Nasu
YZ Circuit East Course (ccw)
YZ Circuit East Course (cw)
(France)
Circuit Paul Ricard
(Taiwan)
Lihpao G2 Circuit
(United Kingdom)
Donington Park Circuit
(United States)
Blackhawk Farms Raceway
Laguna Seca
Waterford Hills Road Racing
(About mounting the iPhone)
- Mount the iPhone to the machine where the iPhone screen can be seen by the driver/rider.
- For 4-wheel machines, GPS reception is more stable under the windshield than under the roof.
- If you don't need to see the time while driving, you can put the app in stand-by mode and put the iPhone in your pocket.
(iPhone settings)
- Turn on Location Services.
- Allow LOCATION ACCESS to LapTimer.
- Turn on Precise Location.
(How to use)
1) Tap the "Settings" button at the bottom center of the screen to open the settings window. Select the circuit you want to measure. You can also select the speed unit and reset the best lap time in the settings window.
2) Tap the "Start" button at the bottom right of the screen to enter stand-by mode, the timer section at the top of the screen will display "Measurement will start when crossing the finish line", and the button will change to “Cancel/Stand-by". GPS is working when the speedometer on the screen changes to numbers.
3) When you enter the course, pass the final corner and pass the finish line at a speed of 15km/h / 9.3mph or more, the timer at the top of the screen will start running and measurement will start, and the "Cancel/Stand-by" button will change to the “Stop" button.
4) After that, the lap time will be updated every time you cross the finish line. The sector time is also updated each time.
5) When you finish running and tap the "Stop" button, the measurement will end and return to stand-by mode, and the button will change to "Cancel/Stand-by".
6) Tap the "Cancel/Stand-by" button to exit stand-by mode and the button will change to “Start".
7) Tap the "Results" button at the bottom left of the screen when the button at the bottom right of the screen is "Start" or "Cancel/Stand-by" to display all saved results. Best/2nd/3rd lap times and top speeds are also easily visible. You can select the part you need and copy or share it.
Please see "App support” about followings.
(About screen display)
(About the measurement line)
(Note)
The developer assumes no responsibility for any accident, violation, loss or claims by third parties which may arise from the use of this app.
Show More
What's New in the Latest Version 2.17.0
Last updated on Apr 22, 2024
Old Versions
Added "Bihoku Highland Circuit Course A” (Japan) and "Bihoku Highland Circuit Course B" (Japan).
Other improvements.
Other improvements.
Show More
Version History
2.17.0
Apr 22, 2024
Added "Bihoku Highland Circuit Course A” (Japan) and "Bihoku Highland Circuit Course B" (Japan).
Other improvements.
Other improvements.
2.16.1
Apr 19, 2024
Fixed a minor bug and improved performances.
2.16.0
Apr 6, 2024
The dialog that appeared when tapping the result button has been abolished.
Other improvements.
Other improvements.
2.15.0
Apr 1, 2024
Added “Owara Circuit" (Japan).
2.14.0
Mar 21, 2024
Added "Aomori Speed Park" (Japan).
Other improvements.
Other improvements.
2.13.0
Mar 1, 2024
Added "Link Circuit" (Japan).
2.12.0
Jan 25, 2024
Added the following feature through in-app purchases.
- Hide banner ads on the main screen
Other improvements.
- Hide banner ads on the main screen
Other improvements.
2.11.1
Jan 12, 2024
Fixed a minor bug and improved performances.
2.11.0
Dec 19, 2023
Added "YZ Circuit East Course CW" (Japan) and "YZ Circuit East Course CCW" (Japan).
2.10.1
Dec 12, 2023
Fixed a minor bug and improved performances.
2.10.0
Nov 17, 2023
Added “Hero Sinoi Circuit" (Japan).
2.9.0
Nov 13, 2023
Added “Ksk Circuit" (Japan).
Other improvements.
Other improvements.
2.8.1
Oct 30, 2023
Added benefit from in-app purchases.
Added benefit: Full-screen ads will no longer appear before and after displaying results.
Other improvements.
Added benefit: Full-screen ads will no longer appear before and after displaying results.
Other improvements.
2.8.0
Oct 27, 2023
Added "Suzuka Circuit South Course" (Japan).
2.7.2
Oct 20, 2023
Fixed a minor bug and improved performances.
2.7.1
Oct 19, 2023
Fixed a minor bug and improved performances.
2.7.0
Oct 9, 2023
Added "Nihonkai Maze Circuit" (Japan).
Other improvements.
Other improvements.
2.6.0
Oct 3, 2023
Added the following curcuits in US.
Summit Point Motorsports Park (Main)
Summit Point (Jefferson Circuit CCW)
Summit Point (Shenandoah Circuit CCW)
Summit Point Motorsports Park (Main)
Summit Point (Jefferson Circuit CCW)
Summit Point (Shenandoah Circuit CCW)
2.5.0
Oct 1, 2023
Added "Blackhawk Farms Raceway" (United States).
2.4.0
Sep 29, 2023
Added "Ipponkunugi Speedway (cw)" (Japan)
2.3.0
Sep 18, 2023
Added "Narita Motor Land (ccw)” and "Narita Motor Land (cw)" (Japan)
Other improvements.
Other improvements.
2.2.0
Sep 12, 2023
Added "Spa Naoiri" (Japan)
Other improvements.
Other improvements.
2.1.0
Sep 8, 2023
Added "HSR Kyusyu Circuit Course" (Japan)
Other improvements.
Other improvements.
2.0.0
Aug 1, 2023
Changed the icon.
Changed In-app purchase dialog.
Changed the number of lap times saved from 10,000 laps to about 40,000 laps.
Other improvements.
Changed In-app purchase dialog.
Changed the number of lap times saved from 10,000 laps to about 40,000 laps.
Other improvements.
1.17.0
Jul 4, 2023
Added Auto Land Tsukude (Japan)
Other improvements.
Other improvements.
Racing Circuit Lap Timer FAQ
Racing Circuit Lap Timer is available in regions other than the following restricted countries:
Russia,Belarus
Racing Circuit Lap Timer supports English, Japanese
Racing Circuit Lap Timer contains in-app purchases. Please check the pricing plan as below:
Smooth measurement
$5.99
Click here to learn how to download Racing Circuit Lap Timer in restricted country or region.
Check the following list to see the minimum requirements of Racing Circuit Lap Timer.
iPhone
Requires iOS 13.0 or later.
iPad
Requires iPadOS 13.0 or later.
iPod touch
Requires iOS 13.0 or later.