FPV Lap Timer

Guide — Tiny Whoops

Lap timing for Tiny Whoops

Whoop laps are short, tight and often flown in a living room or garage. That makes them great practice, but awkward to time. Here are your options, and how to get clean lap times indoors with nothing more than your phone.

Updated October 4, 2026

Why timing whoops is different

Most FPV timing gear was designed for 5-inch quads on outdoor tracks. Tiny Whoops (65–75mm) break a few of its assumptions:

  • Laps are short. An indoor whoop lap can be a few seconds long, so a timer that misses or double-counts a crossing ruins the session.
  • VTx power is tiny. Whoops typically run very low transmit power and never fly far from the timer, so signal-strength (RSSI) timers see a flatter peak at the gate.
  • The quad is small. A whoop is a small target in the frame for a camera, so placement matters more than it does with a 5-inch.
  • Indoor spaces are busy. Furniture, TVs, pets and people near the track can all get in the way of detection.

Your Tiny Whoop timing options

1. Camera lap timer app (simplest)

A camera timer watches the gate and records a lap every time the quad crosses it. Nothing goes on the whoop, it works with any video system, and setup takes under a minute. Apps include FPV Lap Timer (iPhone and Android) and others covered in our free lap timer app roundup.

2. RSSI / VTx timers (DIY or commercial)

Timers like PhobosLT, RotorHazard and FPVSIM's hardware read your video transmitter's signal strength and register a lap at the peak. They're the standard for multi-pilot racing, but they need hardware (often an ESP32 and an RX5808 module), and they need careful calibration to work reliably at whoop distances.

3. Stopwatch or video review

Timing from DVR footage frame by frame is accurate but slow. A stopwatch is fast but inaccurate, and you can't use one while wearing goggles. Both are fine for a one-off. Neither is great for a practice routine.

How to set up a phone camera timer for whoops

  • Mount the phone rock-solid. Use a tripod or a clamp. The detector compares each frame against the background, so any movement of the phone causes false laps.
  • Film the gate side-on. The whoop should cross the frame from one side to the other through the middle of the gate, not fly straight at the camera.
  • Get close, but fit the whole gate. With a small quad, a closer camera means more pixels on the whoop. Just keep the full gate opening in view.
  • Use a calm, contrasting background. A plain wall behind the gate is ideal. Avoid TVs, windows with moving trees, and walkways where people pass through the frame.
  • Light the room evenly. Turn on the overhead lights and avoid strong backlighting from windows.
  • Fly a lap and check. Do a few slow passes to confirm every crossing registers before you start pushing.

Detection still not right? The support FAQ covers missed and phantom laps in more detail.

Making whoop practice count

Once timing is reliable, you get useful data out of it. Track your best lap and your consistency over a session. Compare setups, such as different props, batteries or rates, on the same track. If you race online events like RaceGOW, practise the same consecutive-lap format the event scores. See our RaceGOW lap timer guide for setup tips specific to RaceGOW tracks.

Frequently asked questions

What is the easiest way to time Tiny Whoop laps?

A camera-based phone app is the easiest. Mount your phone on a tripod beside the start/finish gate and the app detects each crossing. There's nothing to install on the whoop and no frequencies to set up.

Do RSSI / VTx lap timers work with Tiny Whoops?

Yes, but they're harder to tune indoors. Whoops run very low VTx power and stay close to the timer for the whole lap, so the signal-strength peak at the gate is less distinct than on an outdoor track. RSSI timers like PhobosLT include calibration for small spaces, but expect to spend some time adjusting thresholds.

Does a camera lap timer work with HD whoops (HDZero, Walksnail, DJI)?

Yes. A camera timer watches the quad itself, not its video signal, so it works the same with analog, HDZero, Walksnail or DJI whoops.

Can I time whoop laps in a small living room?

Yes. Pick a gate where the whoop crosses side-on to the camera, keep the background behind the gate calm and evenly lit, and place the phone far enough back that the whole gate opening fits in the frame.

Is FPV Lap Timer free for whoop practice?

Yes. Lap timing in FPV Lap Timer is free on iPhone and Android. Premium adds extras like ghost racing and advanced analytics, but you don't need it to time laps.

Time your next session with your phone.

FPV Lap Timer is free on iPhone and Android. Point the camera at a gate, hit Start, and every crossing becomes a lap.