---
title: "ApexLap: lap timer & telemetry | Develak"
description: "ApexLap times every lap automatically on any track, saves your data instantly, and adds full telemetry, video overlays and GPS data with “Apex Pro”."
url: https://develak.com/apps/apexlap/
language: en
updated: 2026-09-27
source: Develak
translations:
fr: https://develak.com/fr/applications/apexlap.md
---
Canonical page:
# ApexLap
Lap Timer & Telemetry
Automatic lap timing and full telemetry for every track day
ApexLap is an iPhone app made by Develak that times every lap automatically and logs speed, G-force and video overlays for drivers, motorcyclists and karters on track days.
[Download on the App Store](https://apps.apple.com/us/app/id6782556737)
[Support](https://develak.com/apps/apexlap/support/) [Privacy](https://develak.com/apps/apexlap/privacy/)
## What is ApexLap?
ApexLap turns your iPhone into a lap timer for track days. It detects the start and finish line automatically, times every lap with millisecond interpolation, and saves each lap the instant it completes, so a crash or a dead battery never costs you your data.
The free version includes automatic timing, more than 500 built-in circuits worldwide, and full access to your lap history. “Apex Pro” adds full telemetry, video overlay export, lap comparison, and support for external GPS receivers and OBD-II data.
### App Store description
Your phone becomes a professional data-logger. ApexLap times every lap automatically the moment you cross the start line — reliably, every single time.
Built for track days: cars, motorcycles and karting. No manual needed, readable in full sun through a visor, usable with gloves.
#### Reliable lap timing — free forever
- Automatic start/finish detection with millisecond interpolation
- Every lap is saved the instant it completes — a crash or dead battery never loses your data
- 500+ circuits built in worldwide, karting included — no second app to buy
- Create your own start line for any track in seconds
- Sessions per circuit, laps sorted by best time, best lap and theoretical best
- Your recorded laps, sessions and history are never locked behind a paywall
#### Apex Pro — the full data-logger
- Video overlay export that actually works: lap time, speed, G-force and track map burned into your footage, fast and reliable
- Full telemetry: speed traces, G-forces, auto sectors, live delta vs your best lap
- Lap comparison: overlay two laps and see exactly where the time is
- External 10 Hz GPS receivers (RaceBox, Garmin GLO, Dual…) and OBD-II engine data
- Progression analysis per circuit, session after session
- Setup sheets: tires, pressures and settings logged with each session
- CSV export, unlimited custom circuits
Try Apex Pro free for 7 days with the yearly plan. Monthly and one-time lifetime options available.
Your location data stays on your device. No account, no tracking.
Terms of Use (EULA): [https://www.apple.com/legal/internet-services/itunes/dev/stdeula/](https://www.apple.com/legal/internet-services/itunes/dev/stdeula/)
Privacy Policy: [https://develak.com/privacy-policy/](https://develak.com/privacy-policy/)
### ApexLap at a glance
- **Developer**: [Develak](https://develak.com/about/)
- **Category**: Sports
- **Price**: Free, with optional in-app purchases
- **Compatibility**: iPhone and iPad — iOS 17.0 or later
- **Languages**: 44 languages (English, French, Spanish and 41 more)
- **First released**: July 8, 2026
- **Current version**: 1.0 (July 8, 2026)
- **Size**: 4.3 MB
- **Age rating**: 4+
- **App Store ID**: [id6782556737](https://apps.apple.com/us/app/id6782556737)
## What can you do with ApexLap?
ApexLap times every lap automatically on any track, saves your data instantly, and adds full telemetry, video overlays and GPS data with “Apex Pro”.
### Automatic lap timing
ApexLap detects the start and finish line automatically and times every lap with millisecond interpolation.
- **Laps saved instantly**: Each lap is saved the moment it completes, so a crash or dead battery never loses your data.
- **500+ built-in circuits**: Cars, motorcycles and karting circuits are built in worldwide, with no second app to buy.
- **Custom start lines**: You can create your own start line for any track in seconds.
- **Full telemetry with “Apex Pro”**: “Apex Pro” adds speed traces, G-force, auto sectors and a live delta against your best lap.
- **Video overlay export with “Apex Pro”**: “Apex Pro” burns lap time, speed, G-force and a track map into your footage for export.
## Who is ApexLap for?
- **Track day drivers**: For drivers who want automatic lap timing without setting up a manual trigger at every circuit.
- **Motorcyclists**: For riders who need a lap timer that stays readable in full sun and usable with gloves.
- **Karters**: For karters who want lap timing and telemetry built for kart tracks as well as car circuits.
- **Data-focused racers**: For drivers who want to compare laps, track progression session after session, and export telemetry with “Apex Pro”.
## How does ApexLap work?
From “Pick your circuit” to “Go further with “Apex Pro””, in 4 steps.
1. **Pick your circuit**: Choose from more than 500 built-in circuits, or create your own start line for any track in seconds.
2. **Drive your session**: ApexLap detects the start and finish line automatically and times every lap as you drive.
3. **Review your laps**: Laps are saved instantly and sorted by best time, with your best lap and theoretical best shown per session.
4. **Go further with “Apex Pro”**: Add full telemetry, video overlay export, lap comparison and external GPS or OBD-II data with “Apex Pro”.
## ApexLap, in detail
### How does ApexLap detect the start and finish line automatically?
ApexLap uses your iPhone’s location to detect the moment you cross the start line and times every lap automatically from there, with millisecond interpolation for accuracy.
You do not need to press a button at the start or finish of a lap. The app is built to be readable in full sun through a visor and usable with gloves, so it works during a track session without slowing you down.
### What is included in the free version of ApexLap?
The free version includes automatic lap timing, more than 500 built-in circuits worldwide including karting tracks, and the ability to create your own start line for any track.
Sessions are organized per circuit, with laps sorted by best time, and your best lap and theoretical best calculated for each session. Your recorded laps, sessions and history stay accessible and are never locked behind a paywall.
### What does “Apex Pro” add for data logging?
“Apex Pro” turns ApexLap into a full data-logger. It adds full telemetry with speed traces, G-force, automatic sectors and a live delta against your best lap, along with lap comparison to overlay two laps and see where time is gained or lost.
“Apex Pro” also exports video with lap time, speed, G-force and a track map burned into your footage, supports external 10 Hz GPS receivers such as RaceBox, Garmin GLO or Dual, and reads OBD-II engine data. It logs setup sheets with tires, pressures and settings for each session, tracks your progression per circuit over time, and lets you export data as CSV with unlimited custom circuits.
## What’s new in ApexLap
Version 1.0 · Released July 8, 2026
This is the first version of ApexLap, released on July 8, 2026.
## ApexLap: your questions, answered
Something else? The [ApexLap support page](https://develak.com/apps/apexlap/support/) covers purchases, sync and settings, and lets you write to us directly.
[ApexLap Support](https://develak.com/apps/apexlap/support/): Troubleshooting for purchases, sync and settings, and a direct line to us.
[ApexLap Privacy Policy](https://develak.com/apps/apexlap/privacy/): What ApexLap stores, where it is kept, and how to delete it.
[ApexLap on the App Store](https://apps.apple.com/us/app/id6782556737): Ratings, reviews and the latest version, on Apple’s store.
### Is ApexLap free?
Yes. ApexLap is free to download from the App Store. Optional in-app purchases unlock extra features; they are billed by Apple to your Apple Account, and you can manage them at any time in your account settings.
### Which devices does ApexLap work on?
ApexLap works on iPhone and iPad with iOS 17.0 or later.
### Does ApexLap need an internet connection to time laps?
No. ApexLap detects the start and finish line and times your laps using your iPhone’s location, so it works on track without needing a connection.
### Can I create my own start line for a track that is not built in?
Yes. You can create your own start line for any track in seconds, in addition to the more than 500 circuits already built into the app.
### What happens to my lap data if my phone crashes or the battery dies?
Each lap is saved the instant it completes, so a crash or a dead battery does not cause you to lose the laps you already recorded.
### Is my lap history still available if I do not upgrade to “Apex Pro”?
Yes. Your recorded laps, sessions and history are never locked behind a paywall, whether or not you use “Apex Pro”.
### Can I compare two of my laps in ApexLap?
With “Apex Pro”, you can overlay two laps and see exactly where the time difference comes from.
### Can ApexLap export video with my lap data overlaid?
With “Apex Pro”, you can export video with lap time, speed, G-force and a track map burned into your footage.
### What languages is ApexLap available in?
ApexLap is available in 44 languages: Arabic, Bangla, Catalan, Chinese (Simplified), Chinese (Traditional), Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Odia, Polish, Portuguese, Punjabi, Romanian, Russian, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Urdu and Vietnamese.
### How do I get help with ApexLap?
Visit the [ApexLap support page](https://develak.com/apps/apexlap/support/): it answers common questions about purchases, sync and settings, and has a contact form. You can also write to [contact@develak.com](mailto:contact@develak.com?subject=ApexLap%20%E2%80%94%20Support%20request). We read every message and reply personally.
## More from Develak in Sports & Outdoors
[See all 34 apps](https://develak.com/apps/)
- **[XC Log](https://develak.com/apps/xc-log/)**: Paragliding Log
- **[TenRing](https://develak.com/apps/tenring/)**: Archery Score & Plot
- **[Cogbook](https://develak.com/apps/cogbook/)**: Bike Maintenance
- **[Bottomtime](https://develak.com/apps/bottomtime/)**: Dive Logbook
## Want an app like ApexLap?
We design and build native iPhone, iPad and Mac apps for founders and companies, with the same care we put into our own. Tell us about your idea.
[Start a project](https://develak.com/contact/) [See our services](https://develak.com/services/)
---
*Markdown version of for AI assistants, published by Develak. Links lead to the web pages; add .md to a page URL for its Markdown version. Site index: .*