TopGuru vs V
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TopGuru
Transform your phone or tablet into a powerful vehicle diagnostic tool via Bluetooth. Access full system diagnosis, OBDII functions, bi-directional controls, and essential maintenance services for a wide range of car brands. Generate detailed diagnostic reports for efficient troubleshooting.
- Full System Diagnosis
- Full OBD2 Functions
- Bi-directional Control
- 8 Special Maintenance Functions
- AutoVIN Vehicle Identification
- Diagnostic Report Generation
- Wireless Bluetooth 5.0 Connection
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Easily link the app with your Phone or Tablet using Bluetooth, transforming your devices into a smart and high-powered diagnostic tool! Packed with essential features like complete OBDII functionality, all system diagnosis, Bi-Directional controls, AutoVIN, automatic diagnostic reports, and more, this Bluetooth OBDII scan tool is a must-have for technicians. Its versatility shines through with eight maintenance service functions and coverage for over 60 vehicle brands, making the product a portable and adaptable auto scanner. Main Features: 1. Full System Diagnosis: Covers Engine, Transmission, Airbag, ABS, ESP, TPMS, Immobilizer, Gateway, Steering, Radio, Air Conditioning, and more. 2. Full OBD2 Functions: works as an OBD2 code reader and performs all 10 modes of OBD2 testing free for life. 3. Bi-directional Control: Easily locate issues with active tests. 4. 8 Special Functions: Perform Oil Reset, Throttle Adaptation, EPB Reset, BMS Reset, and more. 5. Repair Data Library: Includes DTC Repair Guide, Technical Service Bulletin, DLC Location, Warning Light Library. 6. AutoVIN: Enables automatic vehicle identification for quick diagnosis. 7. Wireless Connection: Utilizes Bluetooth 5.0 with a range of 33 feet/10m. 8. Graphs, Values, and Dashboard-like Data Display: Ensures easy interpretation of information. 9. Generate Diagnostic Reports: Obtain detailed reports for Systems, Fault Codes, or Data Streams. 10. Pro version features 13 reset functions and IMMO capability. Terms of Use (EULA): https://plat.topdon.com/topdon-plat/out-user/baseinfo/template/getHtmlContentById?softCode=TopScan_DisplaySW_iOS&language=7&type=25
V
Troubleshoot your Harley EFI motorcycle with symptom-based diagnostics and service reminders. Access DTC codes, torque specs, and bike-specific information without hardware. Offers a premium subscription for guided troubleshooting and detailed diagrams.
- Symptom-based diagnostic Q&A
- DTC trouble code lookup
- Torque specs and service intervals
- Smart Service Scheduler
- Circuit diagrams
- Component identification cards
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Your bike's down. The dealer's booked two weeks out. And they charge hundreds just to tell you what's wrong. Every Harley rider knows this math: $100 to $300 for the tow, days or weeks on the lift waitlist, then a diagnostic fee just to be told what your bike was already trying to say. V-Twin Diagnostics ends that. Answer questions about what your bike is doing, what you see, hear, and feel. The app walks the same systematic process a trained tech uses and lands on the probable cause in minutes. No code reader. No hardware. No waiting. ONE DIAGNOSTIC PASS. EVERYTHING BELOW IS IN IT: • Guided Diagnostic Path: proprietary step-by-step troubleshooting built for your exact year and model • Comprehensive Diagnostic Report: complete specs, related trouble codes, the full path you followed, and findings, saved to your bike's profile • Circuit Diagrams and Component Cards: see the actual system behind each probable cause • A Parking Spot in Your Garage: your bike's profile with full specs, notes, and history • Diagnostic History: every run saved, ready to review or export as a PDF PAY ONLY WHEN YOUR BIKE NEEDS IT. NO SUBSCRIPTION REQUIRED. • Diagnostic Pass, $9.99: one complete diagnostic. Never expires. • 3-Pack, $24.99: bank them for when it counts. • Annual License, $59.99/yr: unlimited diagnostics for every bike in your garage, less than half of one dealer diagnostic fee, plus the annual-only Mechanic's Checklists. FREE FOR EVERY RIDER, NO ACCOUNT NEEDED: • DTC code lookup: 71 trouble codes in plain English with probable causes • Torque specs: 119 specs for Twin Cam and Evolution Sportster • Recommended service intervals by mileage FREE WITH AN ACCOUNT: a parking spot for your bike and the Oil Change Service Scheduler, free oil-change reminders matched to your bike and mileage. Covers 2007–2017 Harley-Davidson motorcycles with Delphi EFI: Touring, Softail, Dyna, and Evolution Sportster, including CVO variants. It's YOUR bike. It's been talking to you this whole time. Now you speak the language. V-Twin Diagnostics is an independent aftermarket reference tool, not affiliated with or endorsed by Harley-Davidson. Terms of Use (EULA): https://vtwindiagnostics.com/terms Privacy Policy: https://vtwindiagnostics.com/privacy-policy
Screenshots
Verdict
The clearest difference is rating: V at 4.0 against TopGuru's 3.5. V also leads on update cadence (weekly vs every 3 weeks). TopGuru's advantage is review sentiment (29% vs 0%) and ratings volume (404 vs 2). On price, ads, in-app purchases and monetization model 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. TopGuru sells 20 in-app purchases, starting at $9.99 per month and V sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
V holds the better App Store score, 4.0 against 3.5. That said, the two scores are not equally well evidenced: TopGuru has 404 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 29% of TopGuru's written reviews are positive against 0% of V's, so the app with the better star average is not the one people write more warmly about.
TopGuru ships an update every 3 weeks, V weekly. The most recent releases landed on September 25, 2026 and September 10, 2026 respectively.
| Parameter | TopGuru | V |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (404 ratings) | 4.0 (2 ratings) — better |
| Positive reviews | 29.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 404 — better | 2 |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #167 — better | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 2.2 GB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | HK TOPDON TECHNOLOGY Co., LIMITED | Matthew Griffin |
Customer experience
TopGuru
V
Bugs and requests
TopGuru
Reported bugs
3 issues- Incompatibility with certain vehicle models
- Login and account issues
- Unreliable Bluetooth connectivity
Requested features
3 requests- iPad optimization and full-screen support
- Expanded vehicle coverage, especially for motorcycles
- Ability to save and export diagnostic data
V
Not enough reviews yet to summarise bugs or requests.
In-app purchases
TopGuru
- Monthly Auto-renewal$9.991 Month
- Monthly Auto-renewal$19.001 Month
- Quarterly Auto-renewal$24.993 Months
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- Annual Auto-renewal$49.991 Year
- Annual Auto-renewal$99.001 Year
- Diag Bundle Renewal3 variants$49.99
- TopGuru Diagnostic Bundle$49.99
- TopGuru IMMO Bundle$49.99
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- Renewal Bundle4 variants$99.00
- TopScan Pro Renewal Bundle3 variants$99.00
- Harley Moto Software$99.99
- Harley Moto Software Renewal$99.99
- Moto Diag Bundle Renewal-Moto$99.99
- Moto Diag Bundle$99.99
- Moto Diag Bundle Renewal$99.99
- 22 Special Functions Bundle2 variants$129.99
- Renault Gateway 10 Tokens$129.99
- Renault Gateway 5 Tokens$147.99
- 17 Special Functions Bundle2 variants$179.00
- FCA Gateway 1-year (EU only)$229.99
V
- V-Twin Premium3 Days trial$9.991 Month









