# DEF

> Heavy-duty vehicle DEF station locator for Air1 accredited refill points. (iPhone/iPad app by Yara International ASA.)

- Source: https://appshunter.io/ios/app/def/id433411535 (this page in markdown: same URL + `.md`)
- Developer: [Yara International ASA](https://appshunter.io/developer/499215901)
- Category: Navigation, Travel
- Price: Free
- Rating: 1.00/5 from 1 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 6.0 · 15 MB
- Languages: Danish, Dutch, English, Finnish, French, German, Italian, Norwegian Bokmål, Polish, Spanish and 1 more
- Released: 2011-07-05
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/def/id433411535/reviews.md

## What is DEF?

For Heavy Duty Vehicles only

The Air1 DEF Mobile Locator App - only for use by Heavy Duty Vehicle operators

Heavy Duty Vehicle DEF location finder - updated monthly by the Yara team 

We only list Yara accredited DEF stations.  These stations are not suitable for car drivers or small tank refills (visit www.adblueadvisor.com for more information on Passenger cars).  The DEF Mobile Locator is the official app of Air1®. 

Travelling with Air1’s DEF Locator enables you to quickly locate your closest Air1 DEF filling station to fast fill your Heavy Duty vehicle: 
* Search by city, state or post code 
* Picks up your current location via GPS 
* Calculate distance to Air1’s nearest filling station
* View filling station address details
* Easy access and fast fill pump stations for Heavy Duty vehicles (Please note that we only list Yara bulk retailers, we do not list generic DEF sellers) 
* Route Planner shows you the way
* Updated monthly

Yara sites are not suitable for small vehicles e.g. Passenger cars and other small tank vehicles.  These retail units have been serving bulk DEF to the Heavy Duty Vehicle operators and drivers since 2004 and deliver DEF in large quantities at a fast pace.  Do not use this App for any other purpose than Heavy Duty Vehicle refills.

Diesel Exhaust Fluid (DEF), the operating fluid for SCR vehicles, is a non-toxic solution that transforms harmful Nitrogen Oxide (NOx) emissions from diesel-powered vehicles into harmless water vapor and nitrogen. DEF reduces NOx emissions in the exhaust gas system of your SCR equipped diesel vehicle, whether it be a truck, bus, automobile or an off road vehicle. Air1 complies with the highest industry standards in DEF. You can be sure your SCR vehicle will function flawlessly by using Air1's DEF. We reliably supply the highest quality DEF via a network of distributors across the USA and Canada, so you are never far away from an Air1 distributor or retail outlet.

Air1® is a registered trademark of Yara International ASA.

## Key features

- Search DEF stations by city, state, or postcode
- Utilize GPS for current location
- Calculate distance to nearest station
- View station address details
- Find fast-fill pump stations
- Route planner for navigation

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/def/id433411535/reviews.md

### 1/5 — No results!

*2014-12-06, version 2.0.1*

I don't see any locations on the map!

### 1/5 — Does it work?

*2014-06-24, version 1.12*

Does this work? I don't see any stations.

### 5/5 — Owner Operator

*2011-07-05, version 1.0*

Great App!  Just what I needed to find DEF.  Keep up the good work!

## Frequently asked questions about DEF

### Does Air1 DEF Locator have ads?

The provided data does not specify if Air1 DEF Locator contains advertisements. It is listed as a free application.

### What is the update frequency for Air1 DEF Locator?

The DEF station locations within Air1 DEF Locator are updated monthly by the Yara team.

### Is Air1 DEF Locator suitable for passenger cars?

No, Air1 DEF Locator is exclusively for heavy-duty vehicles. Yara accredited stations listed are not suitable for car drivers or small tank refills.

### What is the age rating for Air1 DEF Locator?

Air1 DEF Locator has an age rating of 4+, making it suitable for a wide range of users.

### Where can I find DEF stations for passenger cars?

For information on DEF stations suitable for passenger cars and small tank refills, please visit www.adblueadvisor.com.

### What devices is Air1 DEF Locator available on?

The provided data does not specify device compatibility, but it is available as a mobile application.

### How does Air1 DEF Locator help with refilling?

The app helps users quickly locate the closest Air1 DEF filling station and provides a route planner to guide them there for fast-fill pumps.

### What kind of DEF stations does Air1 DEF Locator list?

Air1 DEF Locator exclusively lists Yara accredited DEF stations, specifically those serving bulk DEF to heavy-duty vehicle operators and drivers.

## Version history (last 1 release)

### 2.2.2 — 2018-02-01

This app has been updated by Apple to display the Apple Watch app icon.

DEF Support
What's New in Version 2.2.2
Bug fixes and improvements.

## Apps similar to DEF

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [CARSAT Rastreamento](https://appshunter.io/ios/app/carsat-rastreamento/id1570317340) | — | Free | Navigation |
| [台北捷運圖-最方便快速的地圖資訊](https://appshunter.io/ios/app/id1575223400) | — | Free | Navigation |

## More apps by Yara International ASA

- [Yara TankmixIT](https://appshunter.io/ios/app/yara-tankmixit/id524356767)
- [Yara CheckIT](https://appshunter.io/ios/app/yara-checkit/id532565813)
- [trecker.com](https://appshunter.io/ios/app/treckercom/id1053021258)
- [YaraIrix](https://appshunter.io/ios/app/yarairix/id1439064380)
- [Yara ApplyIT](https://appshunter.io/ios/app/yara-applyit/id1447504543)

All apps by Yara International ASA: https://appshunter.io/developer/499215901

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*