Comparison

shake smart vs Duffl

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

Head to head
About

shake smart

This app allows you to pay with your phone by loading funds onto your account. Earn loyalty rewards and bonus opportunities with every purchase, and find nearby locations and view menus.

Highlights
  • Pay with your phone
  • Load smart dollars
  • Earn loyalty rewards
  • Bonus reward opportunities
  • Find nearby locations
  • View menu
  • Track purchases
Read full description

Welcome to the Shake Smart app! - Leave Your Wallet At Home - with the Shake Smart app, you can (optional) pay with your phone! Simply load smart dollars onto your account, scan, and pay. - Earn Loyalty Rewards - whether you are paying through the app, or separately, scan for loyalty to earn smart dollars for future use! For every $55 you spend using the app, get $5 towards your next purchases. - Bonus Rewards - enjoy a variety of extra reward opportunities throughout the year! - Other Features - Find the locations nearest to you, check out our menu on the go, keep track of your purchases, and more! Questions or comments? We're listening. Find us on Facebook (facebook.com/shakesmart), Twitter (@shakesmartinc) and Instagram (@shakesmart), or email info@shakesmart.com.

About

Duffl

This app provides rapid delivery of snacks, drinks, and household essentials to college campuses. Order items and receive them within 10 minutes, delivered by fellow students. It aims to be the most convenient store for students.

Highlights
  • 10-minute delivery
  • Snack and drink delivery
  • Household goods delivery
  • Student-powered delivery
  • Community support
  • Referral discounts
Features
Read full description

Welcome to a new era of convenience. Duffl delivers snacks, drinks, and household goods in college communities in 10 minutes. Dying for a bag of chips? Maybe an impromptu Yerba Mate? How about that NyQuil when you just don’t want to leave? Duffl is the world’s most convenient store, and we’ve got your back. Order through the app, dance for 10 minutes, and a fellow student will drop your bag at your door. You can shop at Duffl and support your community at: UCLA USC UC Berkeley University of Alabama Florida State University University of Central Florida Boise State University More coming soon! What does Duffl sell? Anything a successful college student might need: snacks, chips, ice cream, fruit, toilet paper, notebooks, toothpaste, and much more. We carry some awesome new brands like Dream Pops, Milk Bar, Guyaki, Simulate Nuggs, Oatly, Snaklins, and others you might not have heard of yet. We promise we also carry all your favorite brands too! We’ve got Takis, Cheetos, Ben & Jerry’s, M&Ms, Celcius, Amy’s, Tide, DayQuil, and so many more for you to choose from. How much does Duffl cost? No hidden fees, no surge pricing, no price-gouging. Our small delivery fee helps us offer a competitive wage to our student workforce, and helps us invest more into empowering the community. Get free Duffl cash! After you place your first order, we’ll send you a custom discount code that you can share with your friends. When they use your discount code at checkout, they’ll get $5 off their first two orders and we’ll drop $10 Duffl Cash into your account, it’s our way of saying “you’re amazing!” Discounts & Promos?! If you’re a top customer, we’ll add you to our “Thank You Thursday” list where we say thank you by texting you cool promos and big discounts. There’s no limit to how many times you can be on the list, so try to be a top customer every week! Get involved with Duffl! We’re hiring students for roles in every community: Admirals to manage and grow the campus store; Captains to pick, pack, and batch our bags; Racers to deliver bags via electric scooters; Supply Sergeants to help keep our store organized; Content Cadets to run the community Instagram page; Squad Members to help us with marketing activations in each community; and Social Media Special Ops to help promote Duffl on Instagram and TikTok. Do any of these sound like a good fit for you? Please apply today! Learn more at jobs.duffl.com.

Screenshots

shake smart4 screens
Duffl3 screens

Verdict

The call

The clearest difference is update cadence: Duffl at weekly against shake smart's every 14 months. Duffl also leads on review sentiment (74% vs 47%). shake smart's advantage is monetization model (free vs free with in-app purchases). On price, rating, ratings volume and ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for shake smart against 4.4 for Duffl. Both are backed by a comparable volume of ratings — 196 and 193 respectively. Written reviews are what separate them: 47% of shake smart's written reviews are positive against 74% of Duffl's.

UpkeepUpdate frequency

shake smart ships an update every 14 months, Duffl weekly. The most recent releases landed on August 28, 2026 and September 17, 2026 respectively.

Scorecard3 real differences · 8 level
shake smart versus Duffl: the parameters behind the verdict, then further details
Parametershake smartDuffl
PriceFreeFree
Rating4.5 (196 ratings) — better4.4 (193 ratings)
Positive reviews47.1% of reviews73.5% of reviews — better
Number of ratings196 — better193
Update frequencyEvery 14 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
Best chart rank#197 — better#210
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size114 MB52 MB
Age rating4+12+
DeveloperShake Smart, LLCPowered Ventures, Inc.

Customer experience

shake smart

All ratings196 ratings
Positive87.2%
Neutral0.5%
Negative12.2%
Written reviews17 reviews
Positive47.1%
Neutral0.0%
Negative52.9%

Duffl

All ratings193 ratings
Positive83.4%
Neutral1.0%
Negative15.5%
Written reviews34 reviews
Positive73.5%
Neutral0.0%
Negative26.5%

Bugs and requests

shake smart

Not enough reviews yet to summarise bugs or requests.

Duffl

Reported bugs

7 issues
  • Hi-chew shenanigans
  • Free delivery for a year not redeemable
  • Customer service not responding
  • Inability to cancel orders
  • Delivery to the wrong location/not arriving
Show 2 more
  • Alcohol section not loading
  • Age verification failing

Requested features

6 requests
  • Ability to redeem free delivery for a year
  • Improved customer service responsiveness
  • Option to cancel orders
  • Ensuring delivery drivers come to the door
  • Fixing the alcohol section
Show 1 more
  • Working age verification

In-app purchases

None

shake smart

No in-app purchases

None

Duffl

No in-app purchases

Questions

Is shake smart free?
shake smart is free to download, with no in-app purchases.
Is Duffl free?
Duffl is free to download, with no in-app purchases.
Which has better reviews, shake smart or Duffl?
shake smart is rated higher. shake smart averages 4.5 out of 5 from 196 ratings, while Duffl averages 4.4 from 193 ratings.
Do shake smart or Duffl have ads?
Neither shake smart nor Duffl shows ads.
Which is updated more often, shake smart or Duffl?
shake smart ships an update every 14 months, and Duffl weekly. Most recently, shake smart was updated on August 28, 2026 and Duffl on September 17, 2026.
Which is more popular, shake smart or Duffl?
shake smart currently peaks at #197 in the App Store charts, and Duffl at #210. Chart position reflects recent download velocity rather than total install base.

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