MotionTrace vs Co
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Co
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Co-Driver is the all-in-one companion for rally teams — from vehicle setup through the finish line. Whether you're a driver, co-driver, mechanic, or team owner, Co-Driver keeps your whole crew working from the same data: vehicle specs, event schedules, live stage telemetry, and pace notes, all synced across your team. STAGE TIMING & TELEMETRY • GPS-powered stopwatch with live speed, distance, altitude, compass heading, and G-force readouts • Record official stage times and penalties, with running event totals calculated automatically • Capture recce start/finish waypoints for automatic staging alerts as you approach a stage PACE NOTES & NAVIGATOR'S LOGBOOK • Version-tracked pace notes tied to canonical stages, reused automatically across every event that runs them • A private, per-event logbook for recce notes, driver feedback, and equipment tracking VEHICLE MANAGEMENT • Full setup records with baseline versioning and threshold-based comparison against your vehicle's dynamics • Maintenance rules, service history, and work orders with photo attachments • Tire and spare parts inventory, including a team-wide tire stock pool RALLY EVENT TOOLS • Build events with a guided wizard covering entries, stages, service windows, and fuel logs • Live Rally Mode schedule with real-time running/completed status — shareable to a TV or kiosk display, no login required • Calendar view of every upcoming event across your team TEAM COLLABORATION • Role-based access for owners, engineers, mechanics, drivers, and co-drivers • Push notifications for assignments, event reminders, maintenance due dates, and low-stock alerts Co-Driver is a companion app for teams already using the Rally Workshop Management System. Sign in with an account provided by your team.
Screenshots
Verdict
MotionTrace and Co are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | MotionTrace | Co |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 16 | 16.0 |
| Further details — not scored | ||
| Size | 49 MB | 15 MB |
| Age rating | 12+ | 4+ |
| Developer | YuHsien Chen | Brett Harvey-Read |
In-app purchases
MotionTrace
No in-app purchases
Co
No in-app purchases









