Lap Legend vs MotionTrace
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lap Legend
Record and analyze motorsports laps with live timing, data acquisition, and advanced analytics. Supports various racing disciplines and includes over 2000 track configurations. Integrates with OBD devices for high-performance vehicle data.
- Live lap timing
- Data acquisition via OBD
- Advanced data analysis
- Video and data replay
- 2000+ track configurations
- Support for multiple racing types
- Weather data with corrections
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Use your phone or tablet to record laps, autocross runs, 1/4 mile passes, and more! • Fast, Easy Setup - Get on Track in Seconds • Superior Data Acquisition + Deep OBD Data • GPS Lap Timing with Predictive & Target Times • Integrated Video+Data Recording and Export • Replay Data & Video of your Theoretical Best Lap • Advanced Analysis Tools Designed to Find You Time • Automatic & Manual Points of Interest (POI) Marking • Supports Road Course, Circle Track, Autocross, Rally, Drift, and Drag Racing • 2000+ Included Track Configurations • Custom Track Creation & Sharing • Integrated Weather Data & Density Altitude Calculations • Add Your Own Session Notes Lap Legend is fueled by a passion for motorsports, with the goal of giving all track drivers access to high-performance data acquisition, driving analysis, lap timing, and video. Enjoy! This app is intended only for sanctioned motorsports and track events. Always drive safely. Use at your own risk. Any telemetry or messaging features are not guaranteed, and must not be relied upon for critical or safety uses. Please see website or in-app information for details on compatible external hardware.
MotionTrace
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Dynamic Trajectory — Every Ride Leaves a Trace On the road, you feel more than just the wind—you feel the physical feedback of every acceleration, bump, and lean. These experiences shouldn't just exist in the moment; they deserve to be recorded, reviewed, and analyzed. Dynamic Trajectory is a motion-sensing recording App crafted specifically for power-driven vehicles. Combining vibration sensors, speed tracking, and GPS positioning, it transforms your phone into a "road-feel black box," faithfully recording every vibration and acceleration burst mapped directly to your route. Whether you are an off-road enthusiast, motorcycle rider, cyclist, vehicle tester, or simply curious about your vehicle's suspension performance, Dynamic Trajectory reveals the sensory data invisible to the naked eye. Key Highlights: Inclinometer Detection: Real-time device lean-angle sensing lets you master every pitch and roll instantly. GPS Integration: Syncs all sensory data to the map for effortless section-by-section comparison. Vibration Analysis: Quantifies road harshness, surface quality, and off-road terrain difficulty at a glance. Auto Data Saving: Automatically generates comprehensive routes and analytical charts after every ride. Visualized Playback: Replay, analyze, and compare mapped routes with rich visual feedback. Use Cases: Off-Road / Mountain Riding: Track real-time vibration changes to analyze control limits. Long-Distance Cycling: Log speed and vibration distribution to identify smooth vs. challenging road sections. Daily Commute Road Tracking: Compare routes to find the smoothest path and avoid bumpy spots. Map Your Road Feel Turn every journey from mere memories into visible, comparable, and shareable data stories.
Screenshots
Verdict
The clearest difference is in-app purchases: MotionTrace at none against Lap Legend's 1. MotionTrace also leads on update cadence (weekly vs every 3 weeks). 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
Both are free to download. Lap Legend sells 1 one-off in-app purchase. MotionTrace asks for nothing beyond the download.
Lap Legend ships an update every 3 weeks, MotionTrace weekly. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.
| Parameter | Lap Legend | MotionTrace |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 16 | 16 |
| Further details — not scored | ||
| Size | 15 MB | 48 MB |
| Age rating | 4+ | 12+ |
| Developer | Dauntless Devices LLC | YuHsien Chen |
In-app purchases
Lap Legend
- 3rd Party OBD Device Support$5.99
MotionTrace
No in-app purchases









