# JProg vs JTZ Inventory Manager

The clearest difference is rating: JProg at 3.7 against JTZ Inventory Manager's 3.0. JProg also leads on ratings volume (11 vs 2) and iOS requirement (8.1 vs 15.6). On price, update cadence, ads 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 3.0. That said, the two scores are not equally well evidenced: JProg has 11 ratings behind it against 2, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | JProg | JTZ Inventory Manager |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (11 ratings)](https://appshunter.io/ios/app/jprog/id882358333/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/jtz-inventory-manager/id890490272/reviews) |
| Number of ratings | **11** | 2 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | Free |
| Size | 5 MB | 5 MB |
| Requires iOS | **8.1** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Speedoshop](https://appshunter.io/developer/882358336) | [John Summer](https://appshunter.io/developer/890490275) |

## 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


### JTZ Inventory Manager

[App page](https://appshunter.io/ios/app/jtz-inventory-manager/id890490272)

This utility app helps users manage their vehicle listings. It provides a straightforward way to keep track of inventory details.

**Highlights:** Vehicle listing management, Inventory tracking, Utilities for businesses

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is JProg free?

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

### Is JTZ Inventory Manager free?

JTZ Inventory Manager is free to download, with no in-app purchases.

### Which has better reviews, JProg or JTZ Inventory Manager?

JProg is rated higher. JProg averages 3.7 out of 5 from 11 ratings, while JTZ Inventory Manager averages 3.0 from 2 ratings.

### Do JProg or JTZ Inventory Manager have ads?

Neither JProg nor JTZ Inventory Manager shows ads.

### Which is updated more often, JProg or JTZ Inventory Manager?

JProg ships an update every 3 months, and JTZ Inventory Manager every 3 months. Most recently, JProg was updated on October 26, 2026 and JTZ Inventory Manager on October 24, 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.*