Flash Post Purchase Upsell is the #296 ranked upsell and cross-sell app on Shopify, with a free plan available, as of Sep 4, 2026.
Flash Post Purchase Upsell is a Shopify App Store app by Smart Upsell, launched May 2026.
AppRanks data: Flash Post Purchase Upsell ranks #296 in Upsell and cross-sell on Shopify App Store, placing it in the top 26% of that category.
AppRanks verdict
Generated from live marketplace data — refreshed daily
Flash Post Purchase Upsell is a newly-listed Shopify app with a limited review volume. It is listed in the Upsell and cross-sell category on Shopify App Store, which AppRanks treats as the canonical taxonomy node for ranking and competitor comparison. no published reviews yet means feature claims are unverified by the wider merchant base. Without a published review base, the only fit-signal available is the developer's own documentation plus the marketplace's listing-quality audit (linked below). The free tier lets you trial the entry feature set without committing a payment method. AppRanks tracks rating, review count, pricing tier, and category position daily — the figures on this page reflect the most recent scrape from the canonical Shopify App Store listing.
Pros
- +Free tier available — no card required to evaluate
- +Published by Smart Upsell — established developer track record
Cons
- −No public reviews yet — fit and reliability are unverified
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About Flash Post Purchase Upsell
How Flash Post Purchase Upsell works
Flash Upsell adds high-converting post-purchase upsell and downsell offers in minutes. no coding. The moment payment clears, a one-click offer appears on the post-purchase page and adds to the order instantly. Decline it? A follow-up on the thank-you page recovers the sale. A/B test two variants with live analytics to see what converts, and customize every offer to match your store's branding. AI auto-translates offers into 10 languages. Boost AOV on every order.
Screenshots




Key features
- One-click upsells in the post-purchase page right after payment — no coding
- A second offer on the thank-you page recovers customers who declined the first.
- A/B test two offer variants with live per-offer analytics.
- Customize every offer to match your store's branding.
- AI auto-translates every offer into 10 languages, out of the box.
Standardized capabilities
Normalized capabilities detected for this app, comparable across the marketplace.
- A/B TestingRun experiments to compare variations and optimize user experience.common
- Checkout ProcessStreamline the checkout process to enhance customer experience and reduce cart abandonment.table-stakes
- Checkout UpsellEncourage additional purchases during the checkout process to increase order value.table-stakes
- Click-Through Rate TrackingMonitor click-through rates to assess campaign effectiveness.common
- Conversion Rate OptimizationAnalyze and improve your conversion rates for better sales performance.common
- Custom CSS StylingApply custom CSS to personalize the look and feel of your store.common
- Customer AccountsAllow customers to create and manage their own accounts.common
- Custom HTML IntegrationIncorporate custom HTML for tailored content display.differentiator
- Percentage and Volume DiscountsApply percentage and volume discounts to incentivize purchases.common
- Multi-Language SupportOffer a multilingual experience for your customers.common
- Product Add-OnsEnhance products with customizable add-on options for customers.common
- Thank You Page UpsellOffer upsells on your thank you pages to increase customer value.common
- Advanced CustomizationLeverage advanced options for deeper personalization of your setup.common
Category rankings
As of Sep 5, 2026- Upsell and cross-sell#296of 1,140Top 26%
See 90-day rank history for each category
Track daily rank changes, category shifts, and position volatility.
Keyword rankings
Flash Post Purchase Upsell ranks for 2 keywords across Shopify App Store. Here are the top 2:
- Rank #235
- 2.flashRank #24
Competitors & alternatives
Flash Post Purchase Upsell doesn't have curated competitor matchups yet. Other tracked upsell and cross-sell apps on Shopify:
Frequently asked questions
What is Flash Post Purchase Upsell?
Flash Post Purchase Upsell is an app for Shopify. It is published on Shopify App Store and tracked by AppRanks, and it has been listed on the marketplace since 2026. It is listed under the Upsell and cross-sell category on AppRanks, where you can see its current category position, review-velocity trend, and how it compares against the top alternatives in the same space. Developed by Smart Upsell.
Is Flash Post Purchase Upsell free?
Flash Post Purchase Upsell offers a free plan that merchants can install on Shopify without entering payment details. Pricing details on this page are mirrored from the live Shopify listing and refresh on each scrape cycle.
Who uses Flash Post Purchase Upsell?
Flash Post Purchase Upsell is actively installed across Shopify stores tracked by AppRanks. Its review base is still building, which usually maps to early-stage merchants and stores piloting a new workflow. It is part of the Upsell and cross-sell category on Shopify.
Where does Flash Post Purchase Upsell rank on Shopify?
Flash Post Purchase Upsell currently sits at position #296 in the Upsell and cross-sell category on Shopify. That places it in the top 26% of 1,140 apps tracked in the same category. Category positions are read from the live marketplace ranking and refresh on each scrape, so the number you see here reflects the most recent crawl rather than a long-running average.
What does Flash Post Purchase Upsell integrate with?
Flash Post Purchase Upsell lists 3 integrations on its Shopify marketplace page. The most prominent are Checkout, Customer accounts, Shopify Admin. Integration data is mirrored from the live Shopify listing on each refresh, so the set above tracks whatever the developer has currently published — it does not reflect deeper compatibility AppRanks has not been able to verify from public data.
What languages does Flash Post Purchase Upsell support?
Flash Post Purchase Upsell declares support for 20 languages on its Shopify marketplace listing: English, Chinese (Simplified), Chinese (Traditional), Czech, Danish, Dutch, with 14 additional locales documented on the marketplace listing. Language coverage is the locale set the developer has explicitly translated the app interface into — a broader set typically maps to a developer with international merchant traction.