# Ritchie Bros. vs Cat® SIS2GO

The clearest difference is rating: Ritchie Bros. at 4.8 against Cat® SIS2GO's 2.2. Ritchie Bros. also leads on in-app purchases (none vs 27) and review sentiment (38% vs 11%). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. Cat® SIS2GO sells 27 in-app purchases, starting at $0.99 per month. Ritchie Bros. asks for nothing beyond the download.

Ritchie Bros. holds the better App Store score, 4.8 against 2.2. That said, the two scores are not equally well evidenced: Ritchie Bros. has 18K ratings behind it against 94, so its average is the more settled of the two. Written reviews point the same way: 38% of Ritchie Bros.'s written reviews are positive against 11% of Cat® SIS2GO's.

Ritchie Bros. ships an update every 3 weeks, Cat® SIS2GO every 6 weeks. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Ritchie Bros. | Cat® SIS2GO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (18K ratings)](https://appshunter.io/ios/app/ritchie-bros/id1068567213/reviews)** | [2.2 (94 ratings)](https://appshunter.io/ios/app/cat-sis2go/id1528609895/reviews) |
| Number of ratings | **18K** | 94 |
| Positive reviews | **37.9% of reviews** | 10.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 101 MB | 195 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ritchie Bros.](https://appshunter.io/developer/1044450129) | [Caterpillar Inc.](https://appshunter.io/developer/571668770) |

## What reviewers say

### Ritchie Bros.

[App page](https://appshunter.io/ios/app/ritchie-bros/id1068567213)

This app allows users to buy and sell heavy equipment and trucks through online auctions. Browse a vast inventory, track items, view detailed specs, and bid in real-time from anywhere. It's designed for professionals in construction, logistics, and farming.

**Highlights:** Browse thousands of equipment listings, Personalized watchlists and notifications, Detailed equipment specs and inspection reports, Real-time online bidding, Live auction streaming, Live auctioneer audio

**In-app purchases:** none

**What reviewers like**

- 👍 Great service and excellent quality of vehicles
- 🚀 Fantastic and easy-to-use app
- 🚀 Efficient bidding process
- 🚀 Convenient to use on the go

**What reviewers complain about**

- 🐛 Constant crashes and technical issues
- 🐛 App not saving user information
- 🐛 Unreliable connection during live bidding
- 🔍 Difficult to navigate and search
- 🔍 Removed useful features like category filters

**Reported bugs**

- Login issues after updates
- Watchlist items not syncing or disappearing
- Inability to delete watched items
- Images not loading or displaying properly

**Requested features**

- Live feature for auctions
- Option to delete watched items after bidding
- Ability to search by serial number
- Auction results available in the app
- Easier way to manage watchlist


### Cat® SIS2GO

[App page](https://appshunter.io/ios/app/cat-sis2go/id1528609895)

Access essential manuals and order parts for your Cat equipment. A subscription unlocks detailed service information, including troubleshooting guides and repair procedures, even offline.

**Highlights:** Operation and Maintenance Manuals, Parts Manuals, Parts identification and ordering, Service Manual information, Troubleshooting guides, Repair procedures, Schematics

**Features:** Vision Pro support

**In-app purchases (27)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Retail Limited Monthly 1 | $0.99 | per month |
| Retail Limited1 monthly | $0.99 | per month |
| Retail Limited Yearly 1 | $1.99 | per year |
| Limited Retail1 Yearly | $1.99 | per year |
| SIS2GO Subscription 1 Monthly | $14.99 | per month |
| SIS2GO Subscription 2 Monthly | $14.99 | per month |
| SIS2GO Subscription 3 Monthly | $14.99 | per month |
| SIS2GO Subscription 4 Monthly | $14.99 | per month |
| Retail Exp Product 8 Monthly | $14.99 | per month |
| Retail Exp Product 10 Monthly | $14.99 | per month |
| SIS2GO Subscription 13 Monthly | $14.99 | per month |
| SIS2GO Subscription 10 Monthly | $14.99 | per month |
| SIS2GO Subscription 12 Monthly | $14.99 | per month |
| SIS2GO Subscription 9 Monthly | $14.99 | per month |
| SIS2GO Subscription 6 Monthly | $14.99 | per month |
| SIS2GO Subscription 8 Monthly | $14.99 | per month |
| SIS2GO Subscription 7 Monthly | $14.99 | per month |
| SIS2GO Subscription 5 Monthly | $14.99 | per month |
| SIS2GO Subscription 1 Yearly | $149.99 | per year |
| SIS2GO Subscription 2 Yearly | $149.99 | per year |
| SIS2GO Subscription 3 Yearly | $149.99 | per year |
| Retail Exp Product 10 Yearly | $149.99 | per year |
| Retail Exp Product 8 Yearly | $149.99 | per year |
| Retail Exp Product 9 Yearly | $149.99 | per year |
| SIS2GO Subscription 6 Yearly | $149.99 | per year |
| SIS2GO Subscription 4 Yearly | $149.99 | per year |
| SIS2GO Subscription 5 Yearly | $149.99 | per year |

**What reviewers like**

- 📚 Comprehensive technical documentation and repair guides
- 🔧 Useful troubleshooting information and torque specifications
- 📦 Convenient parts ordering and availability checking
- ⚡ Works well when functioning properly
- 🏪 Quick access to dealer branch information

**What reviewers complain about**

- 🐛 Frequent crashes and white screen freezes
- 🔐 Persistent login loops and authentication failures
- ⏳ Extremely slow loading times and freezing
- 📱 Severe iOS/iPad compatibility issues
- ❌ App fails to launch past splash screen

**Reported bugs**

- App stuck on SIS2GO logo splash screen
- Login credentials not recognized despite valid accounts
- Endless login loop after authentication
- White screen crashes during operation
- Downloads freeze and fail to complete

**Requested features**

- Improve QR code scanner functionality
- Better image quality and zoom capability for diagrams
- Complete offline access to downloaded manuals
- Accurate parts labeling and organization
- Support for more machine models and serial numbers


## Frequently asked questions

### Is Ritchie Bros. free?

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

### Is Cat® SIS2GO free?

Cat® SIS2GO is free to download, with in-app purchases available.

### Which has better reviews, Ritchie Bros. or Cat® SIS2GO?

Ritchie Bros. is rated higher. Ritchie Bros. averages 4.8 out of 5 from 18K ratings, while Cat® SIS2GO averages 2.2 from 94 ratings.

### Do Ritchie Bros. or Cat® SIS2GO have ads?

Neither Ritchie Bros. nor Cat® SIS2GO shows ads.

### Which is updated more often, Ritchie Bros. or Cat® SIS2GO?

Ritchie Bros. ships an update every 3 weeks, and Cat® SIS2GO every 6 weeks. Most recently, Ritchie Bros. was updated on October 30, 2026 and Cat® SIS2GO on October 27, 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.*