RentalFlow turns your Shopify store into a rental operation. Customers book items by selecting delivery and pickup dates on product pages. It tracks inventory to prevent overbooking. Manage deliveries and returns from your mobile dashboard with automatic inventory updates. Perfect for moving boxes, party supplies, and equipment rentals. Your schedule syncs to Google Calendar, Apple Calendar, and Outlook. All features work on mobile for managing rentals on the go. No manual inventory tracking.

• Date-range inventory tracking prevents double-booking across all rental periods
• Delivery and return confirmation with automatic Shopify inventory sync
• Calendar feed integration for Google Calendar Apple Calendar and Outlook
• Dual address collection with zip code service area validation
• Mobile-responsive dashboard for managing rentals from any device

You pick a discount. You pick the lowest gross margin you are willing to keep. PromoMath reads your live prices and cost per item from Shopify and sorts every variant into Safe, Low margin, Losing money, or Missing cost. It also shows the highest discount each variant can take and still clear your floor. Run it on all products, one collection, or a few products. Export the results to CSV. There is nothing to install or sync, and your data stays in Shopify. Requires Cost per item in Shopify.

• Enter a discount and a margin floor, see every variant sorted in seconds
• Safe, Low margin, Losing money, or Missing cost on each variant
• Max safe discount per variant, so you know how far you can actually go

A theme edit, an app update or a new script can break Add to Cart without any warning. Orders slow down and nothing tells you why. Cart Alarm watches each Add to Cart try on your storefront and checks that the item reached the cart. It first learns what a normal day looks like for your store. After that it emails you when tries fail far more often than usual, and again when adds are working. There is nothing to set up. It watches Add to Cart only and needs a theme with a standard product form.

• Email alert when Add to Cart tries fail far more often than is normal for you
• A second alarm for a dead button, when shoppers view products but nobody adds
• A follow-up email when adds work again, so you know the fix held
• Learns what a normal day looks like for your store before it sends any alert
• No setup. Install it and it starts watching your storefront