Start with the job your store needs today. Upgrade when you need more capacity. Eleven apps have no percentage or per-order app fees. Echo and Accord have usage fees on both plans, shown below.

CLARITY
Scan product SEO titles, descriptions and image alt text. Review specific findings, compare exact text changes and approve each product edit. Saved history supports a separately approved undo when the product still matches.
- Free
- Audit up to 25 products per scan. No percentage or per-order app fee.
- Growth
- $9 USD every 30 days. Audit up to 1,000 products per scan. No percentage or per-order app fee.

SIGNAL
Set a low-stock threshold for a variant at a location. Run inventory checks or enable automatic monitoring, then receive grouped alerts at a separately verified and enabled email address.
- Free
- 25 saved variant/location pairs. Automatic scans target about hourly. No percentage or per-order app fee.
- Growth
- $12 USD every 30 days. Up to 1,000 saved variant/location pairs, with automatic scans targeting about every 15 minutes. No percentage or per-order app fee.

TAILOR
Add text, dropdown and checkbox fields to selected products. Required answers and character limits guide shoppers, and answers stay with the cart item and order.
- Free
- One saved, non-archived option set. No percentage or per-order app fee.
- Growth
- $9 USD every 30 days. Up to 100 saved, non-archived option sets. No percentage or per-order app fee.

ECHO
Collect a product-specific email request with explicit consent. Send a restock notification that lets the shopper review the item before adding it to their cart.
- Free
- $0 subscription plus 1% of app-attributed net product sales, with no usage fee cap. 50 tracked interactions per calendar month.
- Growth
- $9 USD every 30 days plus 0.50% of app-attributed net product sales, with no usage fee cap. No monthly tracked-interaction limit; up to 100 campaigns.

NUDGE
Choose a primary product and a relevant companion. Let shoppers add the companion with an optional saving that Shopify checks at checkout.
- Free
- 20 tracked interactions per calendar month. No percentage or per-order app fee.
- Growth
- $9 USD every 30 days. No monthly tracked-interaction limit; up to 100 campaigns. No percentage or per-order app fee.

DUET
Choose two variants and a percentage saving. Shoppers can choose the pair quantity and continue to a separate bundle checkout.
- Free
- 20 tracked interactions per calendar month. No percentage or per-order app fee.
- Growth
- $9 USD every 30 days. No monthly tracked-interaction limit; up to 100 campaigns. No percentage or per-order app fee.

ACCORD
Set a minimum offer and an automatic acceptance threshold. Review offers that need a decision, then let accepted shoppers pay through a Shopify checkout link.
- Free
- $0 subscription plus 1% of app-attributed net product sales, with no usage fee cap. 20 tracked interactions per calendar month.
- Growth
- $9 USD every 30 days plus 0.25% of app-attributed net product sales, with no usage fee cap. No monthly tracked-interaction limit; up to 100 campaigns.

PERK
Choose a gift product and a qualifying spend. Let shoppers add the gift from the cart, with eligibility checked again by Shopify at checkout.
- Free
- 20 tracked interactions per calendar month.
- Growth
- $9 USD every 30 days. No monthly tracked-interaction limit; up to 100 campaigns.

KEEPS
Add a save button to selected products. Shoppers can revisit favorites, remove them or add a saved item to the cart from the same browser, without an email address.
- Free
- 100 new tracked saves per calendar month.
- Growth
- $5 USD every 30 days. No monthly tracked-save limit; up to 100 campaigns.

LADDER
Choose a product variant, a qualifying quantity and a percentage saving. Show the offer beside the product and let Shopify check the discount at checkout.
- Free
- 20 tracked interactions per calendar month.
- Growth
- $9 USD every 30 days. No monthly tracked-interaction limit; up to 100 campaigns.

PARCEL
Let shoppers add your paid wrapping service to the cart. Keep the optional gift message on the wrapping order line so your team can find it at fulfillment.
- Free
- 20 tracked interactions per calendar month.
- Growth
- $5 USD every 30 days. No monthly tracked-interaction limit; up to 100 campaigns.

FIT
Create a chart using your own measurements, assign it to products and publish it in your theme. Shoppers can compare the measurements in centimeters or inches.
- Free
- One chart, assigned to up to 50 products.
- Growth
- $7 USD every 30 days. Up to 100 charts, with up to 50 products assigned to each.

METER
Show shoppers how much more to add with a cart progress bar. A matching Shopify shipping discount checks the order at checkout.
- Free
- 100 tracked views per calendar month.
- Growth
- $5 USD every 30 days. No monthly tracked-view limit; up to 100 campaigns.
Clarity and Signal work in Shopify admin without a theme block. The storefront apps use Online Store 2.0 themes with app blocks. Echo, Nudge, Duet, Accord, Perk, Keeps, Ladder, Parcel and Meter support USD stores. Check each app’s setup and limits before installing. Read the launch announcement.