OngoingAI

AddOnce usage & market intelligence

Pricing
$99 one-time charge
AddOnce Unlimited$99 one-time charge
  • • 14-Day Full Access Trial
  • • One-time purchase with lifetime access
  • • Unlimited Companion Products
  • • Checkbox & dropdown displays
  • • Attach to unlimited products
What does AddOnce do?

Attach optional products to any Shopify product using native products and variants. Simple setup, native cart lines, and a 14-Day Full Access Trial.

  • Add optional add-ons with native Shopify products
  • Create once. Attach to unlimited products.
  • Customers add each selection as independent Shopify cart lines
  • Automatically supports single- and multi-variant companion products
  • Theme App Extension with zero storefront impact until enabled

Features

Upsell and cross-sellProduct page upsellOne-click add-onsWarrantiesProduct add-onsProduct recommendationsFrequently bought together
Review history
Daily review count on the Shopify App Store
0±0 · 26d· Rating steady at 0.0★
Aug 10Sep 4

Daily tracking from Aug 10, 2026 through today · 25 days observed

Catalog position
Within Upsell and cross-sell on the App Store
Rank by reviews
#528 of 637
Review percentile
17th
Rating percentile
55th
On the App Store
0.1 yrs
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Frequently asked questions

Attach optional products to any Shopify product using native products and variants. Simple setup, native cart lines, and a 14-Day Full Access Trial. It's a upsell and cross-sell tool for ecommerce stores.