Comparison

Detroit GP vs StartLight Racing Widget

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

Head to head
About

Detroit GP

Your official guide to the Chevrolet Detroit Grand Prix. Access live race updates, venue navigation, ticket purchasing, and event schedules. Discover fan experiences and free access areas for a complete race weekend.

Highlights
  • Live race updates
  • Venue navigation
  • Ticket purchasing
  • Event schedule
  • Interactive map
  • Race results
Features
Read full description

Detroit GP App powered by Dow MobilityScience - Your Ultimate Guide to Race Weekend! Get ready for the Chevrolet Detroit Grand Prix presented by Lear, returning to the Streets of Downtown Detroit from May 29 to May 31, 2026. The Detroit GP App by Dow MobilityScience is your go-to companion for one of the Motor City’s most anticipated summer events. Access real-time updates, directions, and all the essential race weekend info in one place. Key Features: Live Updates - Stay informed with breaking news and real-time announcements. Track Navigation - Easily find your way around with step-by-step venue directions. Buy Tickets - Purchase Grand Prix tickets quickly and securely. Event Schedule - Keep track of all racing action and entertainment. Interactive Map - Explore the downtown street circuit and key locations. Push Notifications - Get instant alerts for news, events, and race highlights. Race Results - View results from the NTT INDYCAR SERIES, IMSA, and INDY NXT races. Fan Experiences - Learn about autograph sessions, victory lane moments, and more. Free Access Areas - Discover complimentary viewing zones and fan zones at Hart Plaza, Spirit Plaza, the Riverwalk, Campus Martius Park, and more. Join the Detroit Grand Prix street party and celebrate a weekend of speed and excitement in the heart of the city. Download the Detroit GP App today and make the most of your race weekend!

About

StartLight Racing Widget

This app displays your iRacing series schedule directly on your Home Screen. It shows current and upcoming tracks, a live countdown to the next green flag, and even includes custom track maps and a reaction time game. A companion Apple Watch app is also available.

Highlights
  • Home Screen widgets for iRacing series
  • Live countdown to green flag
  • Current and next week's track display
  • Tap to cycle through series
  • Apple Watch app
  • Custom track maps
  • Start-lights reaction time game
Features
Read full description

Startlight puts all your iRacing series on your Home Screen. Pick the series you run, and the widget shows where each one races this week, the track coming up next week, and a live countdown to the next green flag. No app to open — it moves with the schedule. Pay once. No subscription, no account, no ads. Built by a racer who got tired of loading a website to check what track was on this week. WHAT IT DOES - Follow all your series. Add every series you run and see them in one widget — no more checking the schedule series by series. - This week and next. The current track plus the one coming up next week, so you know what to practice. - Live countdown to green. A running timer to the next session, right on your Home Screen. Two widget sizes that display current and next track. - Tap to cycle. The widget runs an App Intent — tap it to flip through the series you follow without opening the app. - Apple Watch app. A native watchOS app, synced from your phone over WatchConnectivity. Check the grid from your wrist. - Track maps. A custom-drawn map for every track on the schedule. - Start-lights game. A Formula-style five-light sequence: wait for lights out, then tap. It logs your best reaction time. Startlight is named after it. HOW IT'S BUILT - SwiftUI throughout — real WidgetKit widgets and a native Watch app, not a web view in a wrapper. - No login. Nothing to sign into, no password to manage. The schedule loads on launch. - No data collected. Your series picks and settings stay on your device. - Pay once. You own it. No recurring billing. If you run a few series and want a faster answer to "what's on this week, what's next, and how long until green," that's what Startlight is. --- Startlight is an independent, fan-made app. It is not affiliated with, authorized, endorsed by, or sponsored by iRacing.com Motorsport Simulations, LLC. "iRacing" is a trademark of iRacing.com Motorsport Simulations, LLC and is used here only to describe compatibility.

Screenshots

Detroit GP4 screens
StartLight Racing Widget3 screens

Verdict

The call

The clearest difference is price: Detroit GP at Free against StartLight Racing Widget's $9.99. Detroit GP also leads on ratings volume (15 vs 2) and iOS requirement (12.0 vs 15.1). StartLight Racing Widget's advantage is rating (5.0 vs 3.9). On ads, in-app purchases and device support 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

Detroit GP is free to download; StartLight Racing Widget costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

StartLight Racing Widget holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Detroit GP has 15 ratings behind it against 2, so its average is the more settled of the two.

Scorecard5 real differences · 5 level
Detroit GP versus StartLight Racing Widget: the parameters behind the verdict, then further details
ParameterDetroit GPStartLight Racing Widget
PriceFree — better$9.99
Rating3.9 (15 ratings)5.0 (2 ratings) — better
Positive reviews80.0% of reviews—
Number of ratings15 — better2
Update frequencyWeekly—
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS12.0 — better15.1
Further details — not scored
Size93 MB47 MB
Age rating12+4+
DeveloperCatalystXL, Inc.Paul Denya

In-app purchases

None

Detroit GP

No in-app purchases

None

StartLight Racing Widget

No in-app purchases

Questions

Is Detroit GP free?
Detroit GP is free to download, with no in-app purchases.
Is StartLight Racing Widget free?
StartLight Racing Widget costs $9.99, with no in-app purchases.
Which has better reviews, Detroit GP or StartLight Racing Widget?
StartLight Racing Widget is rated higher. Detroit GP averages 3.9 out of 5 from 15 ratings, while StartLight Racing Widget averages 5.0 from 2 ratings.
Do Detroit GP or StartLight Racing Widget have ads?
Neither Detroit GP nor StartLight Racing Widget shows ads.

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