# JProg vs OBDSTAR

The clearest difference is rating: JProg at 3.7 against OBDSTAR's 1.5. JProg also leads on ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

JProg holds the better App Store score, 3.7 against 1.5. Both are backed by a comparable volume of ratings — 11 and 4 respectively.

JProg ships an update every 3 months, OBDSTAR every 6 months. The most recent releases landed on September 25, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | JProg | OBDSTAR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (11 ratings)](https://appshunter.io/ios/app/jprog/id882358333/reviews)** | [1.5 (4 ratings)](https://appshunter.io/ios/app/obdstar/id6447170127/reviews) |
| Number of ratings | **11** | 4 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | **Free** | Ad-supported |
| Size | 5 MB | 122 MB |
| Requires iOS | **8.1** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Speedoshop](https://appshunter.io/developer/882358336) | [深圳市轩宇车鼎科技有限公司](https://appshunter.io/developer/1680461221) |

## 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


### OBDSTAR

[App page](https://appshunter.io/ios/app/obdstar/id6447170127)

A handheld maintenance database for technicians, offering technical support, data queries, video viewing, and after-sales consultation. It provides a comprehensive database for automotive, motorcycle, and marine maintenance, aiming for efficient and professional service.

**Highlights:** Handheld maintenance database, Technical support, Data query, Video viewing, After-sales consultation, Comprehensive maintenance data

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

**In-app purchases:** none


## Frequently asked questions

### Is JProg free?

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

### Is OBDSTAR free?

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

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

JProg is rated higher. JProg averages 3.7 out of 5 from 11 ratings, while OBDSTAR averages 1.5 from 4 ratings.

### Do JProg or OBDSTAR have ads?

OBDSTAR shows ads; JProg does not.

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

JProg ships an update every 3 months, and OBDSTAR every 6 months. Most recently, JProg was updated on September 25, 2026 and OBDSTAR on October 9, 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.*