JProg vs TopGuru
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JProg
This tool allows for the programming of automotive memory modules. It is designed for mechanics and enthusiasts to modify vehicle settings.
- Automotive memory programming
- Vehicle settings modification
- Designed for mechanics
- For automotive enthusiasts
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Automotive Memory Programming Tool
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
Screenshots
Verdict
The clearest difference is in-app purchases: JProg at none against TopGuru's 30. JProg also leads on iOS requirement (8.1 vs 15.0). TopGuru's advantage is update cadence (every 3 weeks vs every 3 months) and ratings volume (412 vs 11). On price, rating, ads and device support 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 21 in-app purchases, starting at $9.99 per month. JProg asks for nothing beyond the download.
JProg holds the better App Store score, 3.7 against 3.5. That said, the two scores are not equally well evidenced: TopGuru has 412 ratings behind it against 11, so its average is the more settled of the two.
JProg ships an update every 3 months, TopGuru every 3 weeks. The most recent releases landed on September 25, 2026 and October 20, 2026 respectively.
| Parameter | JProg | TopGuru |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (11 ratings) — better | 3.5 (412 ratings) |
| Positive reviews | — | 29.3% of reviews |
| Number of ratings | 11 | 412 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Best chart rank | — | #193 — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 8.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 5 MB | 2.2 GB |
| Age rating | 4+ | 4+ |
| Developer | Speedoshop | HK TOPDON TECHNOLOGY Co., LIMITED |
Customer experience
JProg
TopGuru
Bugs and requests
JProg
Not enough reviews yet to summarise bugs or 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
In-app purchases
JProg
No 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
- Renault Gateway 1-Token$11.99
- Diag Bundle Renewal3 variants$49.99
- TopGuru Diagnostic Bundle$49.99
Show 13 moreShow fewer
- TopGuru IMMO Bundle$49.99
- 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
