# Fuelbook vs DEF Search

The clearest difference is ratings volume: Fuelbook at 1.2K against DEF Search's 1. DEF Search's advantage is rating (5.0 vs 4.8) and update cadence (every 9 days vs monthly). On price, ads, in-app purchases and monetization model there is nothing between them.

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

DEF Search holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Fuelbook has 1.2K ratings behind it against 1, so its average is the more settled of the two.

Fuelbook ships an update monthly, DEF Search every 9 days. The most recent releases landed on October 26, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Fuelbook | DEF Search |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (1.2K ratings)](https://appshunter.io/ios/app/fuelbook/id427247688/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/def-search/id6746346949/reviews)** |
| Number of ratings | **1.2K** | 1 |
| Positive reviews | 53.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Free | Free |
| Size | 22 MB | 7 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Fuelbook LLC](https://appshunter.io/developer/1700924179) | [David Brownlow](https://appshunter.io/developer/1816264329) |

## What reviewers say

### Fuelbook

[App page](https://appshunter.io/ios/app/fuelbook/id427247688)

Find nationwide truck stop diesel prices to save money on fuel. Access over 5000 truck stop locations with up-to-date pricing information. A trusted resource for professional drivers since 2010.

**Highlights:** Nationwide diesel price search, Over 5000 truck stop locations, Save money on fuel, Trusted resource since 2010

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💰 Helps save money on fuel
- 🗺️ Useful route planning and fuel stop search
- ⭐ Overall great app when it works

**What reviewers complain about**

- 🐛 Frequent bugs and glitches
- 🔄 Unreliable and inconsistent performance
- 📍 Inaccurate or missing fuel stop information
- 🔍 Poor search functionality and results

**Reported bugs**

- App often crashes or fails to load
- Incorrect fuel prices and locations shown
- Search results do not update properly
- Issues with registering and signing in

**Requested features**

- Update fuel prices more frequently
- Improve search to show all relevant locations
- Add option to view street addresses of fuel stops
- Optimize app for mobile devices and landscape mode


### 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 Fuelbook free?

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

### Is DEF Search free?

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

### Which has better reviews, Fuelbook or DEF Search?

DEF Search is rated higher. Fuelbook averages 4.8 out of 5 from 1.2K ratings, while DEF Search averages 5.0 from 1 ratings.

### Do Fuelbook or DEF Search have ads?

Neither Fuelbook nor DEF Search shows ads.

### Which is updated more often, Fuelbook or DEF Search?

Fuelbook ships an update monthly, and DEF Search every 9 days. Most recently, Fuelbook was updated on October 26, 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.*