Racing Circuit Lap Timer 4+

"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.
(Japan)
Akechi Hilltop Circuit
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
Ebisu Circuit North Course
Ebisu Circuit Touge Course
Ebisu Circuit West Course
Fuji Speedway Kart Course Racing
Fuji Speedway Kart Course Short (ccw)
Fuji Speedway Kart Course Short (cw)
Fuji Speedway Racing Course
Fuji Speedway Short Circuit
Hero Sinoi Circuit
Honjo Circuit
HSR Kyusyu Circuit Course
Ipponkunugi Speedway (ccw)
Ipponkunugi Speedway (cw)
Iwai Circuit Road Course
Keiyo Speed Land
Kinki Sports Land
Kota Circuit
Ksk Circuit
Link Circuit
Meihan Sports Land AB Course
Mihama Circuit Full Course
Minami Chiba Circuit
Mobara Twin Circuit East Course
Mobara Twin Circuit West Course
Motegi North Short Course
Motegi Road Course (East)
Motegi Road Course (Full)
Motor Land Mikawa (A∙B)
Motor Land Mikawa (Full)
Motor Land Suzuka
Nakai Inter Circuit
Nakayama Circuit
Narita Motor Land (ccw)
Narita Motor Land (cw)
Nasu Motor Sports Land
Natura Circuit
New Tokyo Circuit
Nihonkai Maze Circuit
Nikko Circuit
Oarai Circuit (ccw)
Oarai Circuit (cw)
Okayama International Circuit
Okegawa Sports Land
Owara Circuit
Seto Island Sea Circuit
Shiraito Speed Land (ccw)
Shiraito Speed Land (cw)
Sodegaura Forest Raceway
Southern Circuit
Sugo International Racing Course
Sugo International West Course
Spa Naoiri
Spa Nishiura Motor Park (Forward)
Spa Nishiura Motor Park (Reverse)
Sports Land Ikoma
Sports Land Yamanashi
Suzuka Circuit Racing Course
Suzuka Circuit South Course
Suzuka Twin Circuit Full Course
Suzuka Twin Circuit G Course
Takasu Circuit
The Magarigawa Club
Tokachi Speedway Clubman Course
Tokachi Speedway Grand Prix Course
Tokachi Speedway Junior Course
Tomin Motor Land A Course
Tomin Motor Land B Course
TS Takata Circuit
Tsukuba Circuit Course1000
Tsukuba Circuit Course2000
Tsukuruma Circuit Nasu (ccw)
Tsukuruma Circuit Nasu (cw)
YZ Circuit East Course (ccw)
YZ Circuit East Course (cw)
(France)
Circuit Paul Ricard
(Taiwan)
Lihpao G2 Circuit
(United Kingdom)
Brands Hatch GP Circuit
Brands Hatch Indy Circuit
Donington Park Circuit
Oulton Park Circuits
(United States)
Blackhawk Farms Raceway
Laguna Seca
Sonoma Raceway
Summit Point Motorsports Park (Main)
Summit Point (Jefferson Circuit CCW)
Summit Point (Shenandoah Circuit CCW)
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. It can be mounted either vertically or horizontally.
- 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)
Easy to use. You'll understand how to use it if you use it.
Please see "App support” if you want to know more about it.

Please see "App support” about followings.
(How to use)
(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.