# Cat® Central vs Qualified by Plenum

The clearest difference is update cadence: Cat® Central at every 3 weeks against Qualified by Plenum's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Cat® Central ships an update every 3 weeks, Qualified by Plenum every 9 months. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Cat® Central | Qualified by Plenum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (4.3K ratings)](https://appshunter.io/ios/app/cat-central/id1608965148/reviews)** | — |
| Number of ratings | **4.3K** | — |
| Positive reviews | 43.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 9 months |
| Monetization | Free with in-app purchases | — |
| Size | 138 MB | 27 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Caterpillar Inc.](https://appshunter.io/developer/571668770) | [Plenum Solutions, LLC](https://appshunter.io/developer/1739419925) |

## What reviewers say

### Cat® Central

[App page](https://appshunter.io/ios/app/cat-central/id1608965148)

This app provides a centralized platform for managing heavy equipment. It offers tools for finding parts, accessing manuals, diagnosing issues, and tracking machine health. Users can also connect with dealers and access support resources.

**Highlights:** Personalized tools and service recommendations, Access operating manuals and maintenance schedules, Diagnose fault codes, Real-time machine health insights, Scan QR codes for parts, Order parts and request service, Connect with local dealers

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Intuitive app
- 💡 Ability to order parts
- 👍 Saving equipment models
- 🚀 Fast and simple to use

**What reviewers complain about**

- 🐛 Difficult to change equipment
- 🐛 Parts diagrams hard to follow
- 🐛 Difficult to find parts
- 🐛 Never loads, asks for dealer info
- 🐛 Clunky and unreliable

**Reported bugs**

- App crashes when changing equipment
- Login issues, password expired
- Locks up after gathering personal info

**Requested features**

- Audible operation manuals
- Accommodate old models
- Dark mode option


### Qualified by Plenum

[App page](https://appshunter.io/ios/app/qualified-by-plenum/id6745102943)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cat® Central free?

Cat® Central is free to download, with no in-app purchases.

### Is Qualified by Plenum free?

Qualified by Plenum is free to download, with no in-app purchases.

### Do Cat® Central or Qualified by Plenum have ads?

Neither Cat® Central nor Qualified by Plenum shows ads.

### Which is updated more often, Cat® Central or Qualified by Plenum?

Cat® Central ships an update every 3 weeks, and Qualified by Plenum every 9 months. Most recently, Cat® Central was updated on October 27, 2026 and Qualified by Plenum on October 25, 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.*