Motool Service Assistant vs Biketune
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Motool Service Assistant
This app helps motorcycle and mountain bike owners track maintenance tasks, log suspension settings, and record ride notes. It offers reminders for upcoming services and supports managing multiple bikes. An optional subscription unlocks advanced features and a virtual remote display.
- Service task tracking
- Suspension setting logs
- Ride notes documentation
- Service interval reminders
- Unlimited bike management
- Virtual remote display
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Your whole garage in your pocket. Save every bike, log every setting, and watch service intervals tick down as the hours and miles add up, so nothing sneaks up on you. Service Assistant is the setup and maintenance logbook for people who work on their own bikes- dirt, street, ADV, or MTB. Add a motorcycle or mountain bike, save its baseline settings, then build a record you can trust instead of trying to remember what you changed three rides ago. A SERVICE CENTER THAT COUNTS DOWN FOR YOU Set the intervals that matter to you the most- suspension service every 40 hours, tune-up every 15 hours, chain every 300 miles. After a ride, log your hours or mileage once. Service Assistant subtracts from every interval automatically and tells you what's coming due before it becomes a problem. You can track by mileage or runtime depending on the bike type. Engine, suspension, chassis, brakes, electrical, drivetrain: if it runs on a schedule, you can track it here. SETTINGS YOU CAN ACTUALLY FIND AGAIN Save a baseline for every bike, then log what you change as you dial it in. Clicker positions, sag, spring rates, tire pressure, gearing, bar and lever position. Record it, compare it, and get back to it when a setup change doesn't pan out. KEY FEATURES • Unlimited bikes — a full profile for every machine you own or maintain • Baseline settings — the known-good starting point you can always return to • Setup notes — suspension, tire pressure, ergonomics, conditions, results • Custom service intervals — by engine hours or mileage, set however you want • Automatic countdown — add hours or miles once, every interval updates • Complete service history — what you did, when you did it, on which bike • Slacker Virtual Remote — turns your phone into a large, easy-to-read display for the Slacker digital sag scale BUILT FOR RIDERS AND THE SHOPS THAT KEEP THEM RUNNING Whether it's one bike in the garage or a rack of customer machines, everything lives in one place — searchable, organized, and there the next time you need it. FROM THE MAKERS OF SLACKER Service Assistant is built by Motool, the team behind the Slacker digital sag scale — the patented suspension setup tool trusted by riders, tuners, and shops since 2014. Start with a 30-day free trial. $0.99/month or $9.99/year after that. — Payment will be charged to your Apple Account at the end of the 30-day free trial. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel your subscription anytime in your Apple Account settings. Any unused portion of a free trial is forfeited when you purchase a subscription. Terms of Service: https://getslacker.com/pages/terms-and-conditions Privacy Policy: https://getslacker.com/pages/privacy-policy
Biketune
This app transforms a compatible OBD-II adapter into a powerful diagnostic and coding tool for motorcycles. It allows users to read fault codes, monitor live engine data, reset service reminders, and perform dealer-level coding and adaptations without visiting a workshop. A demo mode is available to explore features without an adapter.
- Read trouble codes from multiple ECUs
- Monitor live engine data
- Reset service reminders
- Perform motorcycle coding
- View tire-pressure monitoring status
- Shareable fault reports
- Demo mode for exploration
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Biketune turns a supported ELM327 / OBD-II adapter into a full motorcycle diagnostic and coding tool. Connect over Bluetooth or Wi-Fi to read fault codes, watch live engine data, reset the service reminder, and code your bike the way a dealer would, without booking a workshop slot. WHO IT'S FOR Riders who do their own maintenance. Change your oil, then reset the service reminder yourself, no dealer appointment and no fee just to clear the wrench. DIY mechanics who would rather diagnose a fault than guess at it. And anyone who wants to change a setting the dealer charges for. SCAN FOR FREE • Read trouble codes across every reachable ECU: engine, ABS, cluster, chassis, body. • Live engine data: RPM, road speed, coolant and oil temperature, lean angle, twist-grip, gear and battery, in metric or imperial. • All Sensors and Freeze Frame: every parameter, plus what the engine was doing when a code was set. • Advisory codes and Programming Info: VIN, ECU name, calibration ID, BMW chassis code and part numbers. • Tire-pressure monitoring: live TPMS status per wheel. • Shareable fault reports: turn any scan into a clean summary to send to a mechanic. • Demo mode: try every screen without an adapter, anywhere. UNLOCK THE WORKSHOP WITH PRO A single one-time purchase, no subscription, adds every write path and power tool: • Service Reset: write next-service distance, date and bike clock back to the cluster. • Clear trouble codes after a repair. • Coding: change cluster and accessory settings in plain language, from daytime running lights to heated grips to tyre-pressure thresholds in bar or psi. Options vary by bike and fitted equipment. • Adaptations: read stored adaptation values from the cluster and engine. • Actuator Tests: command outputs and actuators directly, safety-gated. • Control Units: drill into each ECU for its own codes, live data, coding and tests. • ABS Data, Accessory Outputs (ZFE), live charting, Data Explorer and Raw Console. COMPATIBILITY • Generic OBD-II: any motorcycle or car that speaks SAE J1979 over CAN (most post-2008 vehicles). • BMW® motorcycles: the deepest support. Modern CAN bikes get reads, live data, coding, adaptations and service procedures: S 1000 RR / R / XR, M 1000 R / RR, R 1200 / 1250 / 1300 GS and RT, R nineT and R 12 families, R 18, F 750 / 800 / 850 / 900, K 1600. Coverage extends to the G-series singles, the C-series and CE scooters, the four-cylinder K bikes, the air and oilhead classics, and BMW-era Husqvarna. Pre-CAN K-line bikes get a dedicated legacy profile. ADAPTER SUPPORT For the full BMW feature set, use a genuine STN-chip adapter: UniCarScan (UCSI-2100), OBDLink CX / SX, or the verified Veepeak OBDCheck BLE+ all pass the extended-addressing and multi-frame checks that coding and service writes need. vGate iCar and most clones handle generic OBD-II reads, but cheaper ones skip extended-addressing, so BMW writes will not work on them. On pairing, Biketune shows the adapter's expected tier and can test every feature against your exact bike first. HONEST ABOUT WHAT WORKS Depth depends on your bike and adapter: generic OBD-II reads work on most post-2008 vehicles, while BMW-specific writes need a BMW bike and proper UDS support. Try Demo mode and the in-app compatibility check before unlocking Pro. PRIVACY Your garage, sessions and diagnostic data stay on your device; your VIN, fault codes and live readings are never sent to us. Optional Sign in with Apple enables iCloud sync of your bike list and adapter pairings through your private iCloud key-value store, not our servers. We use IDFA-free analytics and crash reporting to improve the app, with no ad tracking and no App Tracking Transparency prompt. Available in 11 languages, with a native Liquid Glass interface for iOS 26. NOT AFFILIATED WITH BMW MOTORRAD. Biketune is an independent diagnostic tool; model and chassis names describe vehicle compatibility only. All trademarks remain the property of their respective owners.
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Verdict
The clearest difference is review sentiment: Biketune at 88% against Motool Service Assistant's 32%. Biketune also leads on rating (4.7 vs 3.3) and ratings volume (79 vs 24). Motool Service Assistant's advantage is iOS requirement (13.0 vs 16.4). On price, 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
Both are free to download. Motool Service Assistant sells 2 in-app purchases, starting at $0.99 per month and Biketune sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Biketune holds the better App Store score, 4.7 against 3.3. Both are backed by a comparable volume of ratings — 24 and 79 respectively. Written reviews point the same way: 32% of Motool Service Assistant's written reviews are positive against 88% of Biketune's.
Both ship on a similar rhythm, roughly every 8 days. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.
| Parameter | Motool Service Assistant | Biketune |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (24 ratings) | 4.7 (79 ratings) — better |
| Positive reviews | 31.6% of reviews | 88.0% of reviews — better |
| Number of ratings | 24 | 79 — better |
| Update frequency | Every 8 days | Every 8 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 233 MB | 108 MB |
| Age rating | 4+ | 4+ |
| Developer | Motool Inc | Enum ehf |
Customer experience
Motool Service Assistant
Biketune
In-app purchases
Motool Service Assistant
- Service Assistant1 Month trial$0.991 Month
- Service Assistant1 Month trial$9.991 Year
Biketune
- Biketune Pro$14.99








