The best upsell apps for BigCommerce (2026)

The best upsell app for BigCommerce depends on one choice: whether you want to sell before the order (pre-purchase pop-ups during cart and checkout) or after it (post-purchase offers on the confirmation page). It's a small category — about a dozen apps, several of them dormant — so this is less about feature checklists and more about matching the approach to your store. Here's the current landscape as of 2026. (Disclosure: OrderEdit.io is our product; everything below is verifiable on the marketplace.)

Before the list, the distinction that matters: a pre-purchase offer can lift average order value but adds friction to the path to purchase, while a post-purchase offer can't risk the original sale because it's already captured. Decide which moment you're optimizing, then pick from the apps that serve it.

OrderEdit.io — Order Editing & Upsell

Best for: post-purchase offers without checkout friction. Offers appear on the order confirmation page and inside the customer's self-service edit window, after the sale is safely captured. Accepted add-ons join the existing order — no second checkout, no extra shipping — and a free-shipping threshold bar nudges order value up. Because the upsell rides on an order-editing layer, the same app also removes your "change my order" tickets. From $39/mo with a 21-day free trial.

Easy Upsell

Best for: pre-purchase pop-up offers — with a caveat. The longest-standing dedicated upsell app on the marketplace, with a strong historical rating (around 4.6★ across roughly 46 reviews) built mostly on older reviews. It does trigger-based pop-ups before and after checkout, with A/B testing. The caveat is current: its most recent public reviews (2025) report unresponsive support and one reviewer's impression that the app "seems to no longer be maintained," so check the latest reviews first. See our dedicated Easy Upsell alternatives guide.

Native Upsell by Peasisoft

Best for: simple targeted pop-ups from an active developer. Part of Peasisoft's suite (alongside Native Recommender and a cart-drawer app), it offers no-code pop-up upsells triggered by cart contents. A reasonable like-for-like if you specifically want the pre-purchase pop-up model; as always, check current reviews for support responsiveness.

Unlimited Upsell (Buy X Get Y)

Best for: free. A no-cost option covering cart upsells and thank-you-page offers. The trade-off for free is light promotional branding placed on your thank-you page — your post-purchase real estate carries the app's own promotion. Fine when budget is the hard constraint and you're comfortable with that.

BigCommerce Post-Purchase Platform

Best for: bundling review requests with cross-sell. A marketplace app that requests reviews and runs upsell and cross-sell offers to existing customers. Worth a look if you want post-purchase offers and review collection from a single tool.

What to look for in any upsell app

Whichever timing you choose, the same handful of features separate a tool that earns its keep from one that just adds a pop-up. Look for targeting (offers triggered by cart contents or what was just bought, not the same product for everyone); a frictionless accept (one tap, no re-entering payment); analytics that attribute revenue so you can see lift against cost; and responsive support — the single most common complaint across this whole category is vendors who go quiet, so weight the most recent reviews heavily. And remember that "free" isn't automatically cheap if the trade-off is branding on your thank-you page or code that's no longer maintained.

Does post-purchase or pre-purchase lift AOV more?

There's no universal winner — it depends on catalog and offer — but the risk profiles differ sharply. Pre-purchase pop-ups reach every shopper and can lift average order value, at the cost of adding friction to the decision to buy at all; a clumsy pop-up can dent your core conversion. Post-purchase offers reach only people who already bought, so the addressable audience is smaller, but a decline costs nothing and the accept is frictionless. Plenty of stores run both: a restrained pre-purchase nudge plus a post-purchase offer that catches the rest. The key is to measure each independently so you can tell which is actually paying for itself.

A note on pricing

Upsell apps price in different ways — a flat monthly fee, tiers by order volume, or free with branding — so compare on cost per incremental dollar earned, not sticker price. A $39/mo app that reliably adds a few hundred dollars in attributed upsell revenue is cheaper, in the only sense that matters, than a free app that quietly puts a competitor's promotion on your thank-you page. Use the trial period to get a real number for your store before you decide.

How to choose

Ask the one question again: sell before the order (pop-ups, more friction, some risk to the original conversion) or after it (confirmation page, zero risk to the sale)? Pre-purchase: look at Easy Upsell or Native Upsell by Peasisoft. Free: Unlimited Upsell, accepting the thank-you-page branding. Post-purchase: that's OrderEdit.io's home turf, and you get self-service order editing in the same subscription. Whatever you pick, run the trial and judge it on attributed upsell revenue versus its monthly cost on your own store — not on headline ROI claims.