# Product Selector vs Gauge King

The clearest difference is update cadence: Gauge King at every 4 days against Product Selector's every 5 weeks. 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.

Product Selector ships an update every 5 weeks, Gauge King every 4 days. The most recent releases landed on October 8, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Product Selector | Gauge King |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 18.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 4 days** |
| Monetization | Free | — |
| Size | 69 MB | 8 MB |
| Requires iOS | **16.4** | 17.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Penrite Oil Company](https://appshunter.io/developer/1161277195) | [Mark Ross](https://appshunter.io/developer/1885041786) |

## What reviewers say

### Product Selector

[App page](https://appshunter.io/ios/app/product-selector/id1399443742)

Find the right oil and filter for your vehicle with this comprehensive guide. It also includes a store locator to help you find where to purchase products.

**Highlights:** Oil and filter recommendations, Built-in store locator, Vehicle product guide, Easy-to-use interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Gauge King

[App page](https://appshunter.io/ios/app/gauge-king/id6777585502)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Product Selector free?

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

### Is Gauge King free?

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

### Do Product Selector or Gauge King have ads?

Neither Product Selector nor Gauge King shows ads.

### Which is updated more often, Product Selector or Gauge King?

Product Selector ships an update every 5 weeks, and Gauge King every 4 days. Most recently, Product Selector was updated on October 8, 2026 and Gauge King on October 17, 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.*