# JProg vs TopGuru

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.

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 October 11, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | JProg | TopGuru |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (11 ratings)](https://appshunter.io/ios/app/jprog/id882358333/reviews)** | [3.5 (412 ratings)](https://appshunter.io/ios/app/topguru/id6451488210/reviews) |
| Number of ratings | 11 | **412** |
| Positive reviews | — | 29.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#171** |
| Size | 5 MB | 2.2 GB |
| Requires iOS | **8.1** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Speedoshop](https://appshunter.io/developer/882358336) | [HK TOPDON TECHNOLOGY Co., LIMITED](https://appshunter.io/developer/1846276192) |

## What reviewers say

### JProg

[App page](https://appshunter.io/ios/app/jprog/id882358333)

This tool allows for the programming of automotive memory modules. It is designed for mechanics and enthusiasts to modify vehicle settings.

**Highlights:** Automotive memory programming, Vehicle settings modification, Designed for mechanics, For automotive enthusiasts

**In-app purchases:** none


### TopGuru

[App page](https://appshunter.io/ios/app/topguru/id6451488210)

**Currently charting:** #171 Top Grossing · Utilities (US App Store)

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.

**Highlights:** Full System Diagnosis, Full OBD2 Functions, Bi-directional Control, 8 Special Maintenance Functions, AutoVIN Vehicle Identification, Diagnostic Report Generation, Wireless Bluetooth 5.0 Connection

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (21)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Auto-renewal | $9.99 | per month |
| Monthly Auto-renewal | $19.00 | per month |
| Quarterly Auto-renewal | $24.99 | per 3 months |
| Annual Auto-renewal | $49.99 | per year |
| Annual Auto-renewal | $99.00 | per year |
| Renault Gateway  1-Token | $11.99 | one-time |
| Diag Bundle Renewal | $49.99 | one-time |
| TopGuru Diagnostic Bundle | $49.99 | one-time |
| TopGuru IMMO Bundle | $49.99 | one-time |
| Renewal Bundle | $99.00 | one-time |
| TopScan Pro Renewal Bundle | $99.00 | one-time |
| Harley Moto Software | $99.99 | one-time |
| Harley Moto Software Renewal | $99.99 | one-time |
| Moto Diag Bundle Renewal-Moto | $99.99 | one-time |
| Moto Diag Bundle | $99.99 | one-time |
| Moto Diag Bundle Renewal | $99.99 | one-time |
| 22 Special Functions Bundle | $129.99 | one-time |
| Renault Gateway 10 Tokens | $129.99 | one-time |
| Renault Gateway 5 Tokens | $147.99 | one-time |
| 17 Special Functions Bundle | $179.00 | one-time |
| FCA Gateway 1-year (EU only) | $229.99 | one-time |

**What reviewers like**

- 👍 Works well on most vehicles
- 🚀 Powerful features for the price
- 💡 Useful for DIY and professional mechanics

**What reviewers complain about**

- 🐛 Frequent app crashes and bugs
- ⏱️ Slow and cumbersome to use due to constant updates
- 🔒 Concerns about data privacy and security
- 💰 Subscription model after initial purchase

**Reported bugs**

- Incompatibility with certain vehicle models
- Login and account issues
- Unreliable Bluetooth connectivity

**Requested features**

- iPad optimization and full-screen support
- Expanded vehicle coverage, especially for motorcycles
- Ability to save and export diagnostic data


## Frequently asked questions

### Is JProg free?

JProg is free to download, with no in-app purchases.

### Is TopGuru free?

TopGuru is free to download, with in-app purchases available.

### Which has better reviews, JProg or TopGuru?

JProg is rated higher. JProg averages 3.7 out of 5 from 11 ratings, while TopGuru averages 3.5 from 412 ratings.

### Do JProg or TopGuru have ads?

Neither JProg nor TopGuru shows ads.

### Which is updated more often, JProg or TopGuru?

JProg ships an update every 3 months, and TopGuru every 3 weeks. Most recently, JProg was updated on October 11, 2026 and TopGuru on October 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*