Comparison

Race Trajectory vs Sprint Start Recorder

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

Head to head
About

Race Trajectory

Features
Read full description

Complete Track & Field Record Management ◆ NEW: Shoes Save the shoes you race in and pick them for each record. Search the running shoe catalog to add a pair with its photo and specs such as weight and drop, and see at a glance how many records you've logged in each pair. The ultimate record-keeping app for track and field athletes and running enthusiasts. Manage detailed records for every event from sprints to marathons in one comprehensive platform. Key Features: • Full World Athletics event support (100m to Marathon, Hurdles, Race Walking, Relays) • Detailed records: splits, finishing place, round, heat, lane, weather & venue • Visualize your progress with a time-progression graph • Automatic Personal Best & Yearly Best • Works offline, anytime • Siri & Shortcuts: check your personal best or add a record hands-free • iCloud backup & restore for worry-free device transfers (Premium) • Next Race: reminders before each call and at the start, with a Live Activity countdown Perfect for competitive athletes, recreational runners, and coaches. Track your progress with precision, visualize improvements, and achieve your goals. Start professional-level record management with intuitive, easy-to-use interface. Transform your training data into performance insights today! Premium is available monthly or as a one-time purchase. Both remove ads, allow up to 5 photos and videos per record, and enable iCloud backup creation. Buying lifetime access does not stop your monthly subscription from renewing. ---------- Premium Plan (Subscription) An auto-renewable monthly subscription that removes all ads, lets you attach up to 5 photos and videos per record, and backs up your data to iCloud. - Length / Price: 1 month / price shown in the app - Payment will be charged to your Apple ID account at confirmation of purchase - Subscription automatically renews unless canceled at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours prior to the end of the period - You can manage or cancel your subscription anytime in your Apple ID account settings after purchase - Terms of Use (EULA): https://race-trajectory.web.app/terms/?lang=en-US - Privacy Policy: https://race-trajectory.web.app/?lang=en-US

About

Sprint Start Recorder

This tool helps track sprint start cues, video, and timing for track and field athletes. It simulates realistic race day sequences with adjustable intervals and records clear videos with embedded stopwatch overlays for reaction time analysis.

Highlights
  • Realistic start cues with gunshot sound
  • Adjustable cue intervals
  • Auto-zoom video recording
  • Clear video quality for form review
  • Embedded stopwatch timer for reaction time
  • Simulates 'On Your Marks, Set, Bang!'
Features
Read full description

The Ultimate Sprint Start Training Tool! Sprint Start Recorder is designed for serious track and field athletes who want to improve their 100m sprint start and reaction time with timed cues, video recording, and stopwatch overlays. This app is available for free. ■ Realistic Start Cues with Loud Gunshot Train like a race day with the sequence: "On Your Marks" → "Set" → Bang! (gunshot) You can freely adjust the interval between each cue to match your training style. ■ Auto-Zoom Camera with Clear Start Videos Capture every moment of your sprint with auto-zoom video recording. Recordings are crystal clear, perfect for reviewing form and reaction. ■ Stopwatch Overlay for Accurate Measurement A stopwatch timer is automatically embedded in your videos for precise reaction time analysis. No extra tools needed — just hit record and run. Recommended For: Track athletes training for the 100m sprint Coaches or athletes looking for recorded start drills with timers Anyone who wants to simulate “On Your Marks → Set → Bang!” in solo practice

Screenshots

Race Trajectory4 screens
Sprint Start Recorder4 screens

Verdict

The call

The clearest difference is in-app purchases: Sprint Start Recorder at none against Race Trajectory's 2. Sprint Start Recorder also leads on update cadence (every 2 weeks vs monthly). On price, ads, device support and iOS requirement 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

Both are free to download. Race Trajectory sells 2 in-app purchases, starting at $0.99 per month. Sprint Start Recorder asks for nothing beyond the download.

UpkeepUpdate frequency

Race Trajectory ships an update monthly, Sprint Start Recorder every 2 weeks. The most recent releases landed on October 28, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
Race Trajectory versus Sprint Start Recorder: the parameters behind the verdict, then further details
ParameterRace TrajectorySprint Start Recorder
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—85.7% of reviews
Number of ratings—1 — better
Update frequencyMonthlyEvery 2 weeks — better
AdsYesYes
In-app purchasesYesNo — better
Monetization—Ad-supported
DevicesiPhoneiPhone
Requires iOS17.0 — better17.6
Further details — not scored
Size20 MB32 MB
Age rating4+4+
DeveloperTsuyoshi MatsuokaYuto Nagayama

In-app purchases

2 purchases

Race Trajectory

Subscriptions1
  • Premium (Monthly)$0.991 Month
One-time1
  • Premium (Lifetime)$3.99
None

Sprint Start Recorder

No in-app purchases

Questions

Is Race Trajectory free?
Race Trajectory is free to download, with in-app purchases available.
Is Sprint Start Recorder free?
Sprint Start Recorder is free to download, with no in-app purchases.
Do Race Trajectory or Sprint Start Recorder have ads?
Both Race Trajectory and Sprint Start Recorder show ads.
Which is updated more often, Race Trajectory or Sprint Start Recorder?
Race Trajectory ships an update monthly, and Sprint Start Recorder every 2 weeks. Most recently, Race Trajectory was updated on October 28, 2026 and Sprint Start Recorder on October 30, 2026.

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