# Crowley Marine vs AMSOIL

The clearest difference is review sentiment: Crowley Marine at 93% against AMSOIL's 54%. Crowley Marine also leads on rating (4.8 vs 4.3). On price, ratings volume, update cadence and ads there is nothing between them.

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

Crowley Marine holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 135 and 319 respectively. Written reviews point the same way: 93% of Crowley Marine's written reviews are positive against 54% of AMSOIL's.

Crowley Marine ships an update monthly, AMSOIL fortnightly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Crowley Marine | AMSOIL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (135 ratings)](https://appshunter.io/ios/app/crowley-marine/id1471177349/reviews)** | [4.3 (319 ratings)](https://appshunter.io/ios/app/amsoil/id6748611692/reviews) |
| Number of ratings | 135 | **319** |
| Positive reviews | **92.8% of reviews** | 53.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free | Free |
| Size | 16 MB | 33 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Crowley Labs Limited](https://appshunter.io/developer/1816335986) | [AMSOIL](https://appshunter.io/developer/1826557400) |

## What reviewers say

### Crowley Marine

[App page](https://appshunter.io/ios/app/crowley-marine/id1471177349)

Easily find and purchase OEM spare parts for your outboard motor. Access parts diagrams, product photos, and technical articles for various brands like Johnson, Evinrude, Yamaha, Mercury, and Suzuki.

**Highlights:** OEM spare parts lookup, Parts diagrams, Product photos, Tech articles, Inventory check, Mobile purchasing

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Intuitive and user-friendly interface
- 🚀 Fast and efficient ordering process
- 📊 Detailed exploded parts diagrams
- 🔍 Easy parts lookup and identification
- ⚡ Quick order processing and delivery

**What reviewers complain about**

- ⏱️ Slow shipping despite expedited payment
- 📦 Inconsistent inventory communication
- 🔄 Incomplete parts database compared to web search
- 💸 High one-day shipping costs
- 📞 Poor communication during delays

**Reported bugs**

- Part number mismatches on expanded pages (e.g., clicking number 34 shows wrong item)
- Missing items in app that appear in web searches
- Internal server error during signup
- App unresponsiveness and slow loading
- Incomplete carburetor listings in database

**Requested features**

- More detailed and clearer parts diagrams
- PayPal payment support in app
- Improved app signup process
- Better inventory status visibility before ordering
- Real-time order status notifications


### AMSOIL

[App page](https://appshunter.io/ios/app/amsoil/id6748611692)

Manage your vehicle maintenance and order premium synthetic oils. Track oil changes, set reminders, and get personalized product recommendations for all your vehicles. Shop and reorder with ease for your cars, motorcycles, ATVs, and more.

**Highlights:** Vehicle maintenance tracking, Personalized product recommendations, License plate & VIN scanner, Easy reordering of oils and filters, Maintenance reminders, Biometric login

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Excellent mileage
- 💡 Useful service record feature

**What reviewers complain about**

- 🐛 Login issues
- 🐛 Slow performance
- 🐛 Inability to print orders

**Reported bugs**

- Unable to log in through the app
- MyGarage information takes forever to load
- App crashes

**Requested features**

- Remove 'join now' pop-up for existing users
- Register app with META for better advertising


## Frequently asked questions

### Is Crowley Marine free?

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

### Is AMSOIL free?

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

### Which has better reviews, Crowley Marine or AMSOIL?

Crowley Marine is rated higher. Crowley Marine averages 4.8 out of 5 from 135 ratings, while AMSOIL averages 4.3 from 319 ratings.

### Do Crowley Marine or AMSOIL have ads?

Neither Crowley Marine nor AMSOIL shows ads.

### Which is updated more often, Crowley Marine or AMSOIL?

Crowley Marine ships an update monthly, and AMSOIL fortnightly. Most recently, Crowley Marine was updated on November 3, 2026 and AMSOIL on November 5, 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.*