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Best Opsite Gas Apps

250+ iOS apps curated and reviewed

4.1 avg rating
20 free apps
Updated September 2026

Out of 250+ opsite gas apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Opsite Gas Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Upside: Gas & Food Cash BackUpside: Gas & Food Cash BackFree4.8β˜… (681K)NoNoSep 2026
2INPEX Oil&Gas Unit ConversionINPEX Oil&Gas Unit ConversionFreeβ€”NoNoMay 2026
3My Washington GasMy Washington GasFree4.8β˜… (18K)NoNoSep 2026
4GE Oil & GasGE Oil & GasFree4.0β˜… (1)NoNoMay 2026
5Philadelphia Gas WorksPhiladelphia Gas WorksFree4.8β˜… (6.9K)NoNoSep 2026
6Gas Engineer Software - GESGas Engineer Software - GESFreeβ€”NoYesSep 2026
7Natural Gas PriceNatural Gas PriceFreeβ€”YesNoMay 2026
8Open Gas MonitorOpen Gas MonitorFreeβ€”NoNoJun 2026

Top Picks for Opsite Gas

Upside: Gas & Food Cash Back#1

Upside: Gas & Food Cash Back by Upside Services Inc

Shop & save on grocery & fuel
Editor's Choice
✈️ Travel
4.8😐(681K ratings)
Free
#20in Travel
Upside: Gas & Food Cash Back screenshot 1
Upside: Gas & Food Cash Back screenshot 2
Upside: Gas & Food Cash Back screenshot 3
Upside: Gas & Food Cash Back screenshot 4
Upside: Gas & Food Cash Back screenshot 5
Upside: Gas & Food Cash Back screenshot 6

Earn cash back on everyday purchases like gas, groceries, and dining. Simply claim offers in the app, pay as usual, and get rewards directly to your bank account or as gift cards. Save money on essential spending and enjoy more of what you love.

What We Love

  • πŸ’° Saves money on gas
  • πŸ’³ Easy to use
  • πŸ€‘ Earns cash back
  • πŸ†“ Free app

Room to Improve

  • πŸ› Buggy app with glitches
  • πŸ•°οΈ Slow processing of transactions
  • πŸ€” Inconsistent cash back amounts
  • πŸ€·β€β™€οΈ Limited participating gas stations
  • 🀨 Deceptive advertising
My Washington Gas#3

My Washington Gas by Smart Energy Systems LLC

Secured account management
Worth Considering
πŸ”§ Utilities
4.8😞(18K ratings)
Free
My Washington Gas screenshot 1
My Washington Gas screenshot 2
My Washington Gas screenshot 3
My Washington Gas screenshot 4
My Washington Gas screenshot 5
My Washington Gas screenshot 6

Manage your utility account conveniently from your mobile device. Pay bills, track energy usage, start or stop service, and enroll in payment plans. Enjoy secure access to your billing history and payment options on the go.

What We Love

  • πŸ‘ Quick and easy payments
  • πŸš€ First time use was a breeze
  • πŸš€ Convenient and fast service

Room to Improve

  • πŸ› Frequent login issues
  • πŸ› Buggy and unreliable app
  • πŸ› Payment processing problems
  • πŸ› Blank screens and error messages
  • πŸ‘Ž Difficult to reach customer support

More Opsite Gas apps to explore

FAQ about Opsite Gas

What are the best opsite gas apps for iPhone?
Upside: Gas & Food Cash Back tops our opsite gas apps ranking as of September 2026, with a 4.8-star average from 681K App Store ratings, and it's free to download.
Yes β€” 20 of the top opsite gas apps we rank are free to download, including Upside: Gas & Food Cash Back and INPEX Oil&Gas Unit Conversion.
Upside: Gas & Food Cash Back has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 250+ opsite gas apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
The Upside app allows users to earn cash back on everyday purchases, including gas, groceries, and dining. Users claim offers within the app, pay with their usual credit or debit card, and then receive cash back rewards.
To earn cash back, you first claim an offer in the Upside app. Then, you pay for your purchase as you normally would with any credit or debit card. After completing your purchase, the cash back will be credited to your account.