Comparison

Pure Gas vs DEF Search

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Pure Gas

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
Read full description

CORE LOCATION SERVICES MUST BE ENABLED Pure Gas is a simple front end app for the popular website pure-gas.org. You get a list of all ethanol-free gas stations sorted nearest to furthest. Just click on the one you like, and get driving directions! Use the map view and find a pure gas station anywhere you want to go! In addition to locating the nearest ethanol-free fuel station, you can track and save the following information into the iPhone at every fill-up! Fuel Mileage Trip Distance Fuel Price Fuel Type Assign fuel records to specific vehicles! For more information on Pure Gas, please visit pure-gas.org

About

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.

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
Read full description

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

Pure Gas4 screens
DEF Search4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
Pure Gas versus DEF Search: the parameters behind the verdict, then further details
ParameterPure GasDEF Search
PriceFreeFree
Rating4.6 (2.9K ratings)5.0 (1 ratings) — better
Positive reviews37.1% of reviews—
Number of ratings2.9K — better1
Update frequencyEvery 5 monthsEvery 9 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.115.0 — better
Further details — not scored
Size2 MB7 MB
Age rating4+4+
DeveloperJeffrey JacksonDavid Brownlow

Customer experience

Pure Gas

All ratings2,894 ratings
Positive89.7%
Neutral5.0%
Negative5.3%
Written reviews140 reviews
Positive37.1%
Neutral17.9%
Negative45.0%

DEF Search

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Pure Gas

Reported bugs

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

Requested features

4 requests
  • 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

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Pure Gas

One-time1
  • Developer Tip$0.99
None

DEF Search

No in-app purchases

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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