# u vs Auto Catalyst Market Catalog

The clearest difference is review sentiment: Auto Catalyst Market Catalog at 91% against u's 0%. Auto Catalyst Market Catalog also leads on rating (4.1 vs 1.3) and ratings volume (52 vs 3). u's advantage is in-app purchases (none vs 6) and iOS requirement (9.0 vs 12.0). On price, ads and device support there is nothing between them.

Both are free to download. Auto Catalyst Market Catalog sells 6 in-app purchases, starting at $29.99 per month. u asks for nothing beyond the download.

Auto Catalyst Market Catalog holds the better App Store score, 4.1 against 1.3. That said, the two scores are not equally well evidenced: Auto Catalyst Market Catalog has 52 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of u's written reviews are positive against 91% of Auto Catalyst Market Catalog's.

u ships an update every 2 months, Auto Catalyst Market Catalog every 4 weeks. The most recent releases landed on October 13, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | u | Auto Catalyst Market Catalog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.3 (3 ratings)](https://appshunter.io/ios/app/u-pull-it/id1479958961/reviews) | **[4.1 (52 ratings)](https://appshunter.io/ios/app/auto-catalyst-market-catalog/id1514569855/reviews)** |
| Number of ratings | 3 | **52** |
| Positive reviews | 0.0% of reviews | **90.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 104 MB | 99 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [John Littler](https://appshunter.io/developer/1479958960) | [AutoCatalyst Market LP](https://appshunter.io/developer/1514569854) |

## What reviewers say

### u

[App page](https://appshunter.io/ios/app/u-pull-it/id1479958961)

This app provides real-time updates on vehicle stock, parts prices, and locations for a car parts supplier. Customers can also use it to sell their cars and connect on social media.

**Highlights:** Real-time vehicle stock updates, Parts price information, Vehicle location tracking, Sell your car functionality, Social media integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Auto Catalyst Market Catalog

[App page](https://appshunter.io/ios/app/auto-catalyst-market-catalog/id1514569855)

This app serves as a comprehensive catalog for catalytic converters, allowing users to buy, sell, and determine their real-time value based on precious metal content. It features a vast database with detailed specifications and photographs to aid in identification and valuation.

**Highlights:** Buy or sell catalytic converters, Determine real cost based on Pt, Pd, Rh quotes, Access complete catalyst specifications, View over 25,000 catalysts and 50,000 photographs, Simplify identification of old catalysts, Find partners for profitable sale or recycling

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BASIC PLAN | $29.99 | per month |
| ADVANCED PLAN | $69.99 | per month |
| PREMIUM PLAN | $114.99 | per month |
| VOLUME 5 | $6.99 | one-time |
| VOLUME 100 | $44.99 | one-time |
| VOLUME 500 | $99.99 | one-time |

**What reviewers like**

- 👍 Huge database of catalytic converters
- 👍 Good for fast and up-to-date values
- 👍 Shows catalyst prices and pictures
- 👍 Easy to use
- 👍 Fair prices

**What reviewers complain about**

- 🐛 Server errors and inability to load prices
- 🐛 Prices feel off (too low or too high)
- 🐛 Photos could be added consistently
- 🐛 Interface is very slow and crappy
- 🐛 App barely works

**Reported bugs**

- Server errors
- Cannot load prices
- Prices feel off
- Interface is slow and crappy
- App barely works

**Requested features**

- Add consistent photos
- Improve price accuracy
- Implement a try-before-you-buy option
- Provide technical support
- Make the app free or cheaper


## Frequently asked questions

### Is u free?

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

### Is Auto Catalyst Market Catalog free?

Auto Catalyst Market Catalog is free to download, with in-app purchases available.

### Which has better reviews, u or Auto Catalyst Market Catalog?

Auto Catalyst Market Catalog is rated higher. u averages 1.3 out of 5 from 3 ratings, while Auto Catalyst Market Catalog averages 4.1 from 52 ratings.

### Do u or Auto Catalyst Market Catalog have ads?

Neither u nor Auto Catalyst Market Catalog shows ads.

### Which is updated more often, u or Auto Catalyst Market Catalog?

u ships an update every 2 months, and Auto Catalyst Market Catalog every 4 weeks. Most recently, u was updated on October 13, 2026 and Auto Catalyst Market Catalog on October 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*