Comparison

RaceChrono Pro vs Hotlap

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RaceChrono Pro

This app serves as a comprehensive lap timer and data logger for motorsports, enabling users to record and analyze performance. It offers video recording with data overlays and supports a wide range of external GPS and OBD-II devices for enhanced accuracy.

Highlights
  • Lap timing with sectors and optimal lap
  • Track library with over 2600 pre-made tracks
  • Data analysis with synchronized graphs and maps
  • Predictive lap timing
  • Video recording with data overlay
  • Support for external GPS and OBD-II devices
  • Unlimited session length
Features
Currently charting
Read full description

RaceChrono Pro is a versatile lap timer, data logging and data analysis app designed especially for use in motorsports, replacing your traditional lap timers and data loggers. The RaceChrono Pro app also enables you to record videos and overlay them with the logged data. RaceChrono apps have a strong following, currently over 100000 active users. If you look around at pits during your race or track day, chances are that you’ll see someone using RaceChrono. Even many professionals, such as factory test drivers and race driving instructors, are known to use this app! No matter whether you ride motorbikes, drive go-karts or cars, on closed circuit or special stage tracks – this is the motorsports app for you. RaceChrono Pro has following major features: • Lap timing with sectors and optimal lap • Track library of over 2600 pre-made race tracks • Custom user defined circuit and point-to-point tracks • Smoothly scrolling data analysis with synchronised graph, X/Y graph, map, video and comparison video • Predictive lap timing and time delta graph • Hardware accelerated video export with configurable data overlay • Multiple camera recording and picture-in-picture video export • Video recording using internal camera • Linking and synchronising video files from almost all action cameras • Support for external GPS receivers; Dragy Pro/DRG70/DRG70-C/Lite, RaceBox Mini/Mini S/Micro, Qstarz BL-818GT/BL-1000GT/LT-8000GT, Columbus P-9 Race, Dual XGPS 150/160, VBOX Sport, Garmin GLO • Support for OBD-II readers; OBDLink MX+ Bluetooth, OBDLink CX Bluetooth, Dragy OBD, Vgate vLinker FS, Vgate vLinker/iCar BLE, PLX Kiwi 3/4, Carista OBD2 Bluetooth, Tonwon BLE 1/2/Pro, Veepeak OBDCheck BLE, UniCarScan UCSI-2000, OBDLink MX Wi-Fi, generic Wi-Fi OBD-II • Support for Bluetooth LE heart rate monitors • Unlimited session length, good for 24 hour races • Session data export in .ODS (session summary for Excel), .NMEA, .VBO and .CSV formats

About

Hotlap

This app offers GPS lap timing and data logging for track day enthusiasts. Compare your performance with others in a community setting to improve your personal bests.

Highlights
  • GPS lap timing
  • Data logging
  • Performance comparison
  • Community features
  • Personal best tracking
Features
Read full description

Experience the competitive spirit and camaraderie of track days from anywhere. Hotlap is an exciting new community for track day enthusiasts. With intuitive GPS lap timing and data logging you can ealiy compare your performance with fellow drivers to achieve your next personal best.

Screenshots

RaceChrono Pro4 screens
Hotlap4 screens

Verdict

The call

The clearest difference is price: Hotlap at Free against RaceChrono Pro's $19.99. Hotlap also leads on review sentiment (69% vs 57%). RaceChrono Pro's advantage is rating (4.7 vs 4.3) and chart position (#13 vs unranked). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Hotlap is free to download; RaceChrono Pro costs $19.99 up front. RaceChrono Pro sells 3 one-off in-app purchases and Hotlap sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

RaceChrono Pro holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 184 and 79 respectively. Written reviews complicate that: 57% of RaceChrono Pro's written reviews are positive against 69% of Hotlap's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. Both last shipped on October 24, 2026.

Scorecard4 real differences · 7 level
RaceChrono Pro versus Hotlap: the parameters behind the verdict, then further details
ParameterRaceChrono ProHotlap
Price$19.99Free — better
Rating4.7 (184 ratings) — better4.3 (79 ratings)
Positive reviews57.4% of reviews69.4% of reviews — better
Number of ratings184 — better79
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
Best chart rank#13 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size43 MB118 MB
Age rating4+9+
DeveloperRaceChrono OyExtravehicular Activity, Inc.

Customer experience

RaceChrono Pro

All ratings174 ratings
Positive93.1%
Neutral2.9%
Negative4.0%
Written reviews141 reviews
Positive57.4%
Neutral12.1%
Negative30.5%

Hotlap

All ratings79 ratings
Positive83.5%
Neutral1.3%
Negative15.2%
Written reviews36 reviews
Positive69.4%
Neutral0.0%
Negative30.6%

Bugs and requests

RaceChrono Pro

Not enough reviews yet to summarise bugs or requests.

Hotlap

Reported bugs

10 issues
  • Data lost after phone transfer
  • App not working/updating
  • Photo upload stops at 90%
  • App is very buggy and slow
  • OBD2 recording feature broken
Show 5 more
  • Live delta time feature broken
  • Cannot select custom car
  • Sessions not being recorded
  • OBD2 adapters not recognized
  • App not functioning as expected

Requested features

7 requests
  • Record times while screen is off
  • CarPlay support
  • Update profile picture setting
  • Make app work in background
  • More accurate track layouts
Show 2 more
  • Support for 'other' car type
  • Improve telemetry graph readability

In-app purchases

3 purchases

RaceChrono Pro

One-time3
  • Reference session 3$0.99
  • Reference session 2$4.99
  • Reference session 1$8.99
2 purchases

Hotlap

Subscriptions2
  • Hotlap Plus Monthly$2.991 Month
  • Hotlap Plus Annual$23.991 Year

Questions

Is RaceChrono Pro free?
RaceChrono Pro costs $19.99, and also offers in-app purchases.
Is Hotlap free?
Hotlap is free to download, with in-app purchases available.
Which has better reviews, RaceChrono Pro or Hotlap?
RaceChrono Pro is rated higher. RaceChrono Pro averages 4.7 out of 5 from 184 ratings, while Hotlap averages 4.3 from 79 ratings.
Do RaceChrono Pro or Hotlap have ads?
Neither RaceChrono Pro nor Hotlap shows ads.
Which is updated more often, RaceChrono Pro or Hotlap?
RaceChrono Pro ships an update monthly, and Hotlap monthly. Most recently, RaceChrono Pro was updated on October 24, 2026 and Hotlap on October 24, 2026.

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