JProg vs JTZ Inventory Manager
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
JTZ Inventory Manager
This utility app helps users manage their vehicle listings. It provides a straightforward way to keep track of inventory details.
- Vehicle listing management
- Inventory tracking
- Utilities for businesses
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Manage your vehicle listings.
Screenshots
Verdict
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.
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. 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.
| Parameter | JProg | JTZ Inventory Manager |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (11 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 11 — better | 2 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 5 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Speedoshop | John Summer |
Customer experience
JProg
JTZ Inventory Manager
In-app purchases
JProg
No in-app purchases
JTZ Inventory Manager
No in-app purchases
