Flex Upsell Cart Auto Discount vs Loot Girl Math Giftcard Upsell

Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 9, 2026 for Flex Upsell Cart Auto Discount, Oct 13, 2026 for Loot Girl Math Giftcard Upsell.

The short answer

  • Only Flex Upsell Cart Auto Discount lists a free plan. Paid plans start at $19/month for Flex Upsell Cart Auto Discount and $9.99/month for Loot Girl Math Giftcard Upsell.
  • Loot Girl Math Giftcard Upsell lists 5 features Flex Upsell Cart Auto Discount’s listing doesn’t mention, including Cart upsell, Checkout upsell, Product page upsell.

Head to head

Detected stores

Flex Upsell Cart Auto Discount: 52
Loot Girl Math Giftcard Upsell: —

App Store reviews

Flex Upsell Cart Auto Discount: 18
Loot Girl Math Giftcard Upsell: —

New reviews, 28 days

Flex Upsell Cart Auto Discount: 1
Loot Girl Math Giftcard Upsell: —

Stores added, 28 days

Flex Upsell Cart Auto Discount: 4
Loot Girl Math Giftcard Upsell: —
Open this comparison in ShoplistFree account. Every feature, store and change, side by side.
Pitch
—
—
Categories
  • Upsell and cross-sell
  • Cart customization
  • Upsell and cross-sell
Languages
  • English
  • English
Launched
Jun 3, 2021
May 14, 2026
Built for Shopify
Built for Shopify
Not badged
Reviews per month
1 last full month
—
Detected stores
52active installs
  • Mia Mélange
  • Tomell London
  • Meyer Imports, LLC
  • ThicknThinSwimwear
  • iPetStore
+47 more
0active installs
Most common store size
11-50 products27%
—
Top countries
  • United States23%
  • Australia10%
  • Canada4%
—

Momentum

New reviews each month

Review pace is the clearest public read on how fast an app is winning new merchants.

035JunAugJanAprJunJulFlex Upsell Cart Auto Discount: 2 reviews in June 2024Flex Upsell Cart Auto Discount: 1 reviews in August 2024Flex Upsell Cart Auto Discount: 1 reviews in August 2025Flex Upsell Cart Auto Discount: 5 reviews in December 2025Flex Upsell Cart Auto Discount: 1 reviews in January 2026Flex Upsell Cart Auto Discount: 1 reviews in March 2026Flex Upsell Cart Auto Discount: 3 reviews in April 2026Flex Upsell Cart Auto Discount: 3 reviews in May 2026Flex Upsell Cart Auto Discount: 1 reviews in June 2026Flex Upsell Cart Auto Discount: 1 reviews in July 2026
Flex Upsell Cart Auto DiscountLoot Girl Math Giftcard UpsellCompleted months only
Free options
Free planFree trial
Free planFree trial
Monthly range
From $0 to $19/month
$9.99/month
Plans
BasicFree
  • · 1 Free Offer -Free Gift, Buy More & Save
  • · 1-Click Upsells and Cross-Sells
  • · AI Translation to Any Language
  • · Add-Ons (Shipping Protection, Gift Wrap)
  • · Discount in Cart and Subscription Upsell
  • · Free Shipping Progress Bar
AOV Boost$19/month
14-day free trial
  • · Everything in Free+
  • · Priority Support (Live chat, Call, Wapp)
  • · Up to 7 Cart Offers (Schedule Anytime)
Giftcard Upseller$9.99/month
  • · gift card upsell
  • · giftcard upsell
Coverage
0 of 5 features0%
5 of 5 features100%
Unique strengths
—
  • Cart upsell
  • Checkout upsell
  • Product page upsell
  • Product recommendations
  • +1 more
Upsell and cross-sell
0%0/5
100%5/5
Customization
0%0/4
100%4/4
Offers and recommendations
0%0/1
100%1/1
005onlybothonly
Flex Upsell Cart Auto DiscountLoot Girl Math Giftcard Upsell5 features listed across both App Store listings

Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.

See every feature
Works with also listed by another
—
—
How it sells itself

Turn every cart into a bigger order automatically. 1-time setup. Flex Upsell Cart helps you boost sales by showing smart upsells, cross-sells, and special offers directly inside the cart, without disrupting checkout. Easy to set up, works with any Shopify store. ✅ One-Click Upsells & Cross-Sells: Recommend extra products while customers review their cart.

Turns gift card balances into purchases. When a customer has a gift card, the widget shows them products they can get now, filtered to their exact balance, with upsell picks and mix-and-match combos to maximize spend. The nudge kicks in when they go slightly over their balance, making the extra spend feel effortless. No API keys. No custom code. Add the section to any page in your theme editor and it works.

Key points
  • Easily Setup Gifts for bigger purchases in form of a product or a discount
  • Show targeted upsell and cross-sells based on cart content
  • Show special one-time offers in cart only
  • Shows products matched to the customer's exact gift card balance.
  • Upsell tabs nudge customers to spend beyond their balance.
  • One-click setup. Add to any page in the theme editor, no code.
Screenshots
Upsell a Gift Card as One-Time Offer
Upsell Extra Features (Gift wrapping, warranty, faster ship))Offer Discounts to Reward Customers for Bigger PurchasesCart Upsell Shopify App QuickUpsell
We suggest items that customers can buy with their gift card.
We nudge customers to spend a bit more than their gift card.We nudge customers to spend a lot more than their gift card.

All the numbers

Every figure, side by side

A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.

Showing only the rows where the apps differ.

Adoption

MeasureFlex Upsell Cart Auto DiscountLoot Girl Math Giftcard Upsell
Detected stores52as of Nov 9, 2026Not published
Net store change, 28 days+2estimated0estimated
Stores added, 28 days4new and returningNot enough data
Big-brand shareNot enough dataNot enough data
Top store categoriesApparel & Accessories, Health & Beauty, Home & GardenNot published
Top store countriesUnited States, Australia, CanadaNot published

Reviews

MeasureFlex Upsell Cart Auto DiscountLoot Girl Math Giftcard Upsell
App Store rating5.0 ★Not published
App Store reviews18Not published
New reviews, 28 days1Not enough data
Reviewers a year or more inNot enough dataNot enough data

Pricing

MeasureFlex Upsell Cart Auto DiscountLoot Girl Math Giftcard Upsell
Free planYesNot listed
Lowest paid monthly plan$19/month$9.99/month(ahead)
Longest free trial14 daysNot listed
Plans listed21

Listing

MeasureFlex Upsell Cart Auto DiscountLoot Girl Math Giftcard Upsell
Shopify category rank#67in Cart customization#1115in Upsell and cross-sell
Shopify App ChartsNot on this week’s chartsNot on this week’s charts
Built for ShopifyYesNo
LaunchedJun 3, 2021May 14, 2026
Languages1English1English
DeveloperFlex UpsellJoey's Comics LLC

FAQ

Flex Upsell Cart Auto Discount and Loot Girl Math Giftcard Upsell: common questions

Is Flex Upsell Cart Auto Discount or Loot Girl Math Giftcard Upsell cheaper?
Only Flex Upsell Cart Auto Discount lists a free plan. Paid plans start at $19/month for Flex Upsell Cart Auto Discount and $9.99/month for Loot Girl Math Giftcard Upsell. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
What features does each app list that the other doesn’t?
Loot Girl Math Giftcard Upsell lists 5 the others don’t mention, such as Cart upsell, Checkout upsell, Product page upsell, Product recommendations. A feature missing from a listing may still be supported; this compares what each App Store listing says.
Where does this comparison’s data come from?
Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Nov 9, 2026 for Flex Upsell Cart Auto Discount, Oct 13, 2026 for Loot Girl Math Giftcard Upsell; estimated figures are labeled.

How Shoplist compares apps

Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Nov 9, 2026 for Flex Upsell Cart Auto Discount, Oct 13, 2026 for Loot Girl Math Giftcard Upsell. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.