Fuelbook vs DEF Search
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fuelbook
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.
- Nationwide diesel price search
- Over 5000 truck stop locations
- Save money on fuel
- Trusted resource since 2010
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Fuelbook is a simple but powerful tool for professional truck drivers looking for truck stop diesel prices nationwide. Quickly search over 5000+ truck stop diesel prices and start saving more on every fuel stop. Fuelbook is proud to have been a trusted and valued resource for diesel price information since 2010.
DEF Search
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.
- 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
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DEF Search is the fastest way to find Diesel Exhaust Fluid (DEF) pumps near you. Whether you're a long-haul trucker, fleet driver, RV traveler, or diesel pickup owner, running low on DEF shouldn't slow you down. DEF Search shows you nearby stations on a clean, easy-to-read map with addresses, descriptions, and one-tap directions in Apple Maps or Google Maps. WHY DEF SEARCH • Built for the road — large tap targets, fast map, minimal clutter • Crowd-sourced and verified — drivers like you keep the data fresh • Free to use — no subscriptions, no paywalls • Works in the USA and Canada — search by city, state, or current location KEY FEATURES • Interactive locator map of DEF pumps • Search by address, city, or ZIP code • Use your current location to find the closest pump • One-tap directions in Apple Maps or Google Maps • Confirm a station is still open and pumping • Report closed, moved, or incorrect locations • Suggest new stations to help other drivers • Save Favorite stations FOR TRUCKERS Skip the wrong-turn detours. Find DEF pumps before you exit the highway. FOR RV & DIESEL DRIVERS Plan refills along your trip and never get stranded with a DEF warning light. COMMUNITY POWERED Every confirmation, report, and suggestion makes the map better for the next driver. Help us build the most accurate DEF station directory on the road. PRIVACY FIRST We only use your location to show nearby stations and provide directions. No tracking, no selling your data. Download DEF Search and never hunt for diesel exhaust fluid again.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Fuelbook | DEF Search |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (1.2K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 53.8% of reviews | — |
| Number of ratings | 1.2K — better | 1 |
| Update frequency | Monthly | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 7 MB |
| Age rating | 17+ | 4+ |
| Developer | Fuelbook LLC | David Brownlow |
Customer experience
Fuelbook
DEF Search
Bugs and requests
Fuelbook
Reported bugs
4 issues- 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
4 requests- 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
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Fuelbook
No in-app purchases
DEF Search
No in-app purchases









