Comparison
RetentionKit vs Smile.io
Smile pioneered Shopify loyalty — but reviews and referrals live in other apps.
Feature
RetentionKit
Smile.io
Loyalty program
Product reviews
Referral program
Add-on
Photo & video reviews
Site / brand reviews
AI review insights
Unified moderation inbox
Product Q&A
Loyalty tiers (Bronze/Silver/Gold)
Higher tier only
Birthday bonuses
Higher tier only
1-click import from competitors
Manual / CSV
Google rich-snippet feed
Paid add-on
All three programs in one bill
Free plan
Up to 500 orders/mo
Limited
Starting paid price
$29/mo
paid plans start at $49/mo.
Built for Shopify-native UI
Varies
Where Smile.io falls short
- No built-in product reviews
- Referrals require separate Smile Referrals add-on
- Charges per active member above the cap
Why merchants pick RetentionKit
- Loyalty + reviews + referrals in one app
- Free plan with unlimited reviews
- Single bill, predictable pricing
- Installs in under 2 minutes