Kaching Post Purchase Upsell vs PostEx

How Kaching Post Purchase Upsell and PostEx compare on the Shopify App Store: rating, review count, pricing, the Built for Shopify badge, and where each one ranks in the store's organic search results. Every number is the App Store's own and is never edited.

Updated September 8, 2026 · App Store data

Maintained by Rankbase, built by a Shopify app developer

Kaching Post Purchase Upsell vs PostEx at a glance

As of September 8, 2026, Kaching Post Purchase Upsell is rated 5.0 stars from 344 reviews and PostEx is rated 2.5 stars from 11 reviews on the Shopify App Store.

Rating: Kaching Post Purchase Upsell has the higher rating, 5.0 stars against 2.5.
Reviews: Kaching Post Purchase Upsell has more reviews, 344 against 11.
Pricing: Kaching Post Purchase Upsell lists "Free plan available", PostEx "Free to install".
Built for Shopify: Only Kaching Post Purchase Upsell carries the Built for Shopify badge.

Kaching Post Purchase Upsell and PostEx on the Shopify App Store, as of September 8, 2026: rating, review count, pricing label, the Built for Shopify badge, and the date each app's data was last read from the store.
Fact	Kaching Post Purchase Upsell	PostEx
Tagline	Boost AOV via 1-click Checkout upsells & Thank You page offers	Order shipment booking and fulfillments in PostEx
Rating	★ 5.0	★ 2.5
Reviews	344	11
Pricing	Free plan available	Free to install
Built for Shopify	Built for Shopify	No badge
Data as of	September 8, 2026	September 8, 2026

Ratings, review counts, pricing labels and badges are read from each app's Shopify App Store search result card. Rankings are the store's organic results for the searches Rankbase tracks; sponsored results are excluded.

Where each app ranks in App Store search

Every Shopify App Store search Rankbase tracks where Kaching Post Purchase Upsell or PostEx is in the top 10 today, with the position merchants see. Organic results only, across 3,620 tracked searches; sponsored placements never count.
App Store search	Kaching Post Purchase Upsell	PostEx
Both apps rank · 2 searches
Post Ex	#3	#1
Postex	#5	#1
Only Kaching Post Purchase Upsell ranks · 50 searches
Kaching Upsell	#1	not in top 10
Post At	#1	not in top 10
Post Purchase	#2	not in top 10
Post Purchase Upsell	#2	not in top 10
Post Purchase Upsell Hero	#2	not in top 10
Poste Italiane	#2	not in top 10
Kaching	#3	not in top 10
La Poste Pro	#3	not in top 10
Mindestbestellwert	#3	not in top 10
Paginas	#3	not in top 10
Post Script	#3	not in top 10
Reconvert Post Purchase Upsell	#3	not in top 10
Thank You Page	#3	not in top 10
Xcotton Post Purchase Guard	#3	not in top 10
Deutsche Post	#4	not in top 10
Kachin	#4	not in top 10
Kaching Bundel	#4	not in top 10
Kaching Bundels	#4	not in top 10
Kaching Bundle	#4	not in top 10
Kaching Bundles	#4	not in top 10
Kaching Cart	#4	not in top 10
Kaching Subscriptions	#4	not in top 10
Katching Cart	#4	not in top 10
Kathing Bundles	#4	not in top 10
Laposte	#4	not in top 10
Post Nl	#4	not in top 10
Thank You	#4	not in top 10
Checkout Upsell	#5	not in top 10
Click	#5	not in top 10
Katching Bun	#5	not in top 10
One Click Upsell	#5	not in top 10
Posten	#5	not in top 10
Bpost	#6	not in top 10
Katching	#6	not in top 10
La Poste	#6	not in top 10
Nz Post	#6	not in top 10
Ofertas	#6	not in top 10
Panier	#6	not in top 10
Aus Post	#7	not in top 10
Post & DHL	#7	not in top 10
Boost	#8	not in top 10
India Post	#8	not in top 10
Customly	#9	not in top 10
Katching Bundles	#9	not in top 10
Offer	#9	not in top 10
Offers	#9	not in top 10
Pago	#9	not in top 10
Up Sell	#10	not in top 10
Upseller	#10	not in top 10
UTM	#10	not in top 10
Only PostEx ranks · 2 searches
Flowsend	not in top 10	#5
Postnl	not in top 10	#10

In the App Store's organic search results, Kaching Post Purchase Upsell ranks in the top 10 for 52 of the 3,620 searches we track and PostEx for 4. They share 2 searches and PostEx ranks higher on all of them.

Frequently asked questions

Is Kaching Post Purchase Upsell or PostEx rated higher on the Shopify App Store?

Kaching Post Purchase Upsell has the higher rating, 5.0 stars against 2.5. Kaching Post Purchase Upsell has more reviews, 344 against 11.

Which has more reviews, Kaching Post Purchase Upsell or PostEx?

Kaching Post Purchase Upsell has more reviews, 344 against 11.

Which ranks higher in Shopify App Store search, Kaching Post Purchase Upsell or PostEx?

How is this comparison made?

Rankbase records the organic results merchants see when they search the Shopify App Store for 3,620 popular keywords, refreshed daily for published rankings and at least weekly for the rest. Each app's rating, review count, pricing label and Built for Shopify badge are taken from its App Store search result card, so they are exactly what merchants see; the date next to each app is the last time it appeared in any tracked top 10. Sponsored results are excluded, and nothing on this page is edited by hand, including for Rankbase's own apps.

More comparisons

Kaching Post Purchase Upsell against other apps

PostEx against other apps

Rankbase paired these two apps on September 8, 2026, when both ranked in the top 3 for "post ex". The page stays as long as either app keeps ranking or the comparison keeps being read, and every number on it is refreshed from the App Store.

All app comparisons → · Browse keyword rankings →

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Built by Craftshift

Rankbase is made by Craftshift, a Shopify Partner building apps for product images, variants, and bulk catalog work. We built Rankbase to track the App Store rankings of our own apps first, then opened it to other developers, and this directory grew out of that work. The rankings on these pages are Shopify's own organic search results; we never edit them, including for our own apps.

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