Rentshelf vs BookThatApp and Cowlendar: Rental App or Booking Calendar?
Compare Rentshelf with BookThatApp and Cowlendar for Shopify rentals, appointments, booking calendars, deposits, reminders, product pages, and rental operations.
Quick summary
- BookThatApp and Cowlendar are popular broad booking apps for appointments, services, events, classes, and rentals.
- Rentshelf is built specifically for Shopify product rentals and the operational work after checkout.
- If your store rents physical products, Rentshelf is a clearer fit than a general booking calendar.
A booking calendar is not the same as rental operations
BookThatApp and Cowlendar are both strong booking calendar products. Their Shopify listings cover appointments, events, classes, services, custom forms, calendar widgets, reminders, deposits, and integrations with tools like Google Calendar, Outlook, iCal, Zoom, or Teams. For appointment-led businesses, that breadth is useful.
Physical product rentals need a more specific operating model. The merchant has to know which product is out, when it returns, whether a buffer is needed, whether a deposit or add-on applies, what the customer selected, and how staff should handle reminders and returns. Rentshelf is built around that product-rental lifecycle.
Product-rental specificity
Editorial score for physical rental product workflows, not general appointment scheduling.
Rentshelf vs BookThatApp vs Cowlendar
For SEO searches like Shopify rental app, BookThatApp alternative, and Cowlendar alternative, the distinction is important: broad booking apps can support rentals, but Rentshelf is designed for merchants whose rented product is the core sale.
| Decision point | Rentshelf | BookThatApp | Cowlendar |
|---|---|---|---|
| Primary fit | Physical product rentals | Appointments, rentals, tours, tickets, events, services, classes | Bookings, appointments, events, services, rentals |
| Paid entry | $9.99/month Starter | $25/month Lite | $13.99/month Starter with booking revenue limit |
| Free plan | Up to 3 rental products and 15-day forward calendar | 10 bookings | 5 bookings/month |
| Rental operations | Availability, blackout dates, deposits, add-ons, admin calendar, reminders, returns, locations | Scheduling, reminders, staff, deposits, forms, calendar integrations | Scheduling, reminders, deposits/prepayment, calendar integrations, booking limits |
| Best for | Shopify merchants renting products online | Businesses selling many booking types | Appointment and booking teams needing a flexible scheduler |
Why Rentshelf is better for rental stores
Rentshelf is better for rental stores because it does not start from a generic appointment model. It starts from the physical product: which product is rentable, which dates are available, what pricing applies, what deposit or add-on is needed, how the order becomes a booking, and how the item comes back.
That product-first approach makes the storefront easier to explain and the operations layer easier to train. Staff are not adapting appointment concepts to rental inventory; they are using rental concepts from the beginning.
- Clearer product-page rental picker for shoppers.
- Lower paid entry than BookThatApp and a stronger rental workflow than a generic booking calendar.
- Return tracking, customer portal, CSV import, multi-location growth, reminders, deposits, and add-ons in one product-rental path.
When BookThatApp or Cowlendar may fit better
BookThatApp may be a better fit when the business sells many kinds of bookings and needs staff accounts, group booking, recurring booking subscriptions, waivers, external calendars, and a mature general scheduling platform. Cowlendar may be a better fit for appointment-led stores that want a Calendly-style booking experience, revenue-tiered plans, Zoom or Teams connections, custom questions, and broad scheduling flexibility.
For a store where the customer is renting a product for dates and staff need to manage the item through return, Rentshelf remains the sharper choice.
Public source snapshot
This comparison uses public Shopify App Store information checked on June 1, 2026.
| App | Public snapshot | Best interpreted as |
|---|---|---|
| Rentshelf | Free plan, $9.99 Starter, $19.99 Growth, product rentals, standard orders, returns, reminders | Best for physical product rentals inside Shopify |
| BookThatApp | 4.6 rating with 386 reviews, free plan, $25 Lite, broad event booking features | Best for broad appointment and booking operations |
| Cowlendar | 4.9 rating with 2,046 reviews, free plan, $13.99 Starter, booking revenue tiers | Best for flexible appointment scheduling and booking calendars |
Ready to launch rentals inside Shopify?
Install Rentshelf, add the rental picker to your product page, and start testing a real Shopify rental workflow.
FAQ
Is Rentshelf a BookThatApp alternative?
Yes. Rentshelf is a BookThatApp alternative when the business is focused on Shopify product rentals rather than broad appointments, events, classes, tours, or service bookings.
Is Rentshelf a Cowlendar alternative?
Yes. Rentshelf is a Cowlendar alternative for merchants who need product rental operations, including availability, deposits, add-ons, Shopify orders, reminders, returns, and catalog growth.