Shopify App Review · Checkout & Cart
Wiz: Checkout Upsell Review (2026)
Stores wanting to sell on the checkout page itself, with the important caveat that this is the expensive half of the app.
SCORE
/10
Wiz: Checkout Upsell adds upsells and customisations to Shopify checkout and post-purchase pages: checkout-page upsells, banners, trust badges, input fields and gift messages, plus post-purchase one-click offers, thank-you page offers, order-status upsells, A/B testing and surveys. It holds a 4.9 rating from 51 reviews with the Built for Shopify badge. There is no free plan: Essential is $49 a month for post-purchase features only, and checkout-page upselling starts on the $99 Plus Growth plan.
Want to try Wiz on your store?
Partner link · you pay the same price as going direct via Shopify
What Wiz actually does
Split the app in two and it makes more sense. The post-purchase half, on the $49 Essential plan, covers one-click upsell funnels after payment, thank-you page offers and customisations, order-status page upsells and a review block, plus shipping and payment method customisations. This is the part every store can use regardless of plan, and post-purchase offers are attractive because accepting one does not require re-entering payment details.
The checkout half, on the $99 Plus Growth plan, is where the app earns its name: upsells inside the checkout itself, subscription upgrades, checkout banners, review widgets, trust badges, custom input fields, gift messages, a discount list and free gifts. Above that, the $199 Checkout Concierge tier is a service layer rather than a feature one, custom onboarding, A/B testing and analysis across extensions, monthly performance review calls and custom extension development. The app is built on Checkout Extensibility and integrates with Klaviyo, Functions and customer accounts.
How it scores across key areas
| Features | 9.0 | |
| Ease of setup | 8.5 | |
| Value for money | 7.0 | |
| Support & docs | 9.0 | |
| Reliability | 8.5 | |
| Track record | 8.0 |
Pros & cons
- Covers the checkout page itself, not just post-purchase, a genuinely restricted surface
- 4.9 from 51 reviews with the Built for Shopify badge, live since April 2023
- Post-purchase one-click upsells convert well because payment friction is already cleared
- A/B testing across checkout extensions, which most apps in this space do not offer
- Trust badges, gift messages, custom input fields and discount lists inside checkout
- Built on Checkout Extensibility with Klaviyo and Functions integrations
- 14-day trial on every tier
- No free plan, and the entry price is $49/month, high for post-purchase-only functionality
- Despite the app’s name, checkout-page upselling requires the $99 tier
- That tier is named “Plus Growth”; checkout UI customisation is generally a Shopify Plus capability, so confirm your plan qualifies
- 51 reviews is a modest base compared with the developer’s other apps
- 4% of ratings are one star, two reviews, but worth reading before committing
- English only
- The $199 tier is largely a service package rather than added functionality
Seen enough? Spin it up on a duplicate theme:
Partner link · same price as direct on Shopify
App Store screenshots
Marketing screenshots from the Shopify listing, in-admin UI may look different. Always verify on a duplicate theme.
Before you spend trial time
- Decide first whether you need checkout-page upsells or post-purchase upsells. They are different features on different tiers, and the app’s name points at the more expensive one.
- Confirm your Shopify plan supports checkout customisation before paying for the $99 tier, the tier is named Plus Growth for a reason.
- If post-purchase is all you need, price the alternatives honestly. Several rivals are free to install and charge a percentage only of upsell revenue they generate.
- Test the checkout extension on a real order, on mobile, with a discount code applied. Checkout is the least forgiving place for a layout problem.
- Measure checkout completion rate, not just upsell take-up. Anything added to checkout can distract as easily as it converts.
- Use the A/B testing rather than assuming a placement works, it is one of the genuine advantages here.
- Read the two one-star reviews before committing. On a base of 51 they are easy to find and worth the two minutes.
Pricing
Plans (verify on the listing): No free plan. Essential $49/month: post-purchase upsell funnels, thank-you page upsells and customisations, order-status page upsells and review block, all shipping and payment customisations, 14-day trial. Plus Growth $99/month or $999/year (save 16%): checkout upsells, subscription upgrades, checkout banners, reviews, trust badges, checkout input fields, gift messages, checkout discount list and free gifts, plus all post-purchase features, 14-day trial. Checkout Concierge $199/month or $1,999/year (save 16%): all Plus plan features plus custom onboarding and launch, A/B testing and analysis across all extensions, monthly performance review calls and custom extension development, 14-day trial. The listing has periodically shown promotional first-month pricing on the Plus Growth tier; treat any such offer as temporary and budget for the standard rate.
Pricing changes frequently on Shopify apps, always check the live listing for the latest tiers and trial terms. View current pricing on Shopify →
Closing take
Wiz covers both halves of the post-cart journey: upsells, trust elements and custom fields inside Shopify checkout, and one-click offers on the thank-you and order-status pages afterwards, with A/B testing across both.
Bottom line: a capable app with a misleading name. Budget $99 rather than $49 if checkout-page upselling is what you actually want, confirm your plan supports checkout customisation, and compare the $49 post-purchase tier honestly against rivals that only charge when they earn.
Ready to try Wiz?
Free plan / trial on the listing · validate on a duplicate theme before you roll it out.
Partner link, you pay the same as going direct via Shopify.
Related reviews & comparisons
Frequently asked questions
What does Wiz: Checkout Upsell do?
It adds upsells and customisations to Shopify checkout and the pages after it: checkout-page upsells, subscription upgrades, banners, reviews, trust badges, input fields, gift messages, discount lists and free gifts, plus post-purchase one-click upsell funnels, thank-you page offers, order-status page upsells, A/B testing and surveys. It is built on Checkout Extensibility.
Does the $49 plan include checkout upsells?
No, and this is the most important thing to know before installing. The $49 Essential plan covers post-purchase features, upsell funnels after payment, thank-you page and order-status page upsells, and shipping and payment customisations. Checkout-page upselling starts on the $99 Plus Growth plan.
Do I need Shopify Plus to use Wiz?
For the post-purchase features on the $49 plan, no. For the checkout-page features, the tier is named “Plus Growth” and checkout UI customisation on Shopify is generally a Plus capability, so confirm your plan qualifies before paying for that tier. Check with Shopify or the developer against your specific plan rather than assuming.
Is there a free plan?
No. Pricing starts at $49/month with a 14-day trial, rising to $99 for checkout-page features and $199 for the concierge tier. If you only want post-purchase upsells, several competing apps are free to install and charge a percentage of the upsell revenue they generate instead.
Are checkout upsells worth it?
On the right store, yes, checkout is the highest-intent moment you have, and post-purchase offers convert well because the payment friction is already gone. The risk is distraction: anything added to checkout can cost you completions. Measure checkout completion rate alongside upsell take-up, and use the built-in A/B testing rather than trusting a placement.
How established is Wiz?
Reasonably: on the App Store since 12 April 2023 from Skai Lama, with a 4.9 rating from 51 reviews, 94% five star, one four-star and two one-star, and the Built for Shopify badge. Skai Lama also publishes Kite Discount and Easy Bundles, both of which have over a thousand reviews, so the developer has a strong track record even though this listing is smaller.
How we researched this
- Primary source: Shopify App Store listing for Wiz: Checkout Upsell
- Supplementary: 3-star review sampling for support and UX friction signals
- Last updated: August 14, 2026