# Pure Gas vs DEF Search

The clearest difference is in-app purchases: DEF Search at none against Pure Gas's 1. DEF Search also leads on rating (5.0 vs 4.6) and update cadence (every 9 days vs every 5 months). Pure Gas's advantage is ratings volume (2.9K vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Pure Gas sells 1 one-off in-app purchase. DEF Search asks for nothing beyond the download.

DEF Search holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Pure Gas has 2.9K ratings behind it against 1, so its average is the more settled of the two.

Pure Gas ships an update every 5 months, DEF Search every 9 days. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Pure Gas | DEF Search |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (2.9K ratings)](https://appshunter.io/ios/app/pure-gas/id454559068/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/def-search/id6746346949/reviews)** |
| Number of ratings | **2.9K** | 1 |
| Positive reviews | 37.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 9 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 2 MB | 7 MB |
| Requires iOS | 18.1 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jeffrey Jackson](https://appshunter.io/developer/1681952284) | [David Brownlow](https://appshunter.io/developer/1816264329) |

## What reviewers say

### Pure Gas

[App page](https://appshunter.io/ios/app/pure-gas/id454559068)

Locate nearby stations offering ethanol-free gasoline. View a list sorted by distance or use the map to find stations anywhere. Track fuel mileage, trip distance, price, and type for each fill-up, assigning records to specific vehicles.

**Highlights:** Locate ethanol-free gas stations, Sort stations by distance, Map view for station discovery, Track fuel mileage, Record trip distance, Log fuel price and type, Assign fuel records to vehicles

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Developer Tip | $0.99 | one-time |

**What reviewers like**

- 🚀 Helpful for finding ethanol-free fuel
- 👍 Works as intended
- 🚗 Useful for classic/vintage cars
- 💡 Ability to add/update station information

**What reviewers complain about**

- 🐛 Inaccurate or outdated station information
- 🔍 Limited search/filter options
- 📱 Lacking features compared to website version
- ⚠️ Stations listed don't actually have ethanol-free fuel

**Reported bugs**

- App crashes or won't open
- Map view issues, such as incorrect station locations

**Requested features**

- Add fuel pricing information
- Allow searching/browsing outside of current location
- Display octane levels for each station
- Enable user reviews/comments on stations


### DEF Search

[App page](https://appshunter.io/ios/app/def-search/id6746346949)

Easily locate Diesel Exhaust Fluid (DEF) pumps nearby with an interactive map. Get directions, confirm station status, and contribute to keeping data accurate for all diesel vehicle owners.

**Highlights:** Interactive DEF pump locator map, Search by address, city, or ZIP code, Use current location for closest pump, One-tap directions via Apple/Google Maps, Confirm station status, Report/suggest station updates, Save favorite stations

**In-app purchases:** none


## Frequently asked questions

### Is Pure Gas free?

Pure Gas is free to download, with in-app purchases available.

### Is DEF Search free?

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

### Which has better reviews, Pure Gas or DEF Search?

DEF Search is rated higher. Pure Gas averages 4.6 out of 5 from 2.9K ratings, while DEF Search averages 5.0 from 1 ratings.

### Do Pure Gas or DEF Search have ads?

Neither Pure Gas nor DEF Search shows ads.

### Which is updated more often, Pure Gas or DEF Search?

Pure Gas ships an update every 5 months, and DEF Search every 9 days. Most recently, Pure Gas was updated on October 24, 2026 and DEF Search on October 6, 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.*