Product
- PopupsWelcome, exit, and cart offers that ask once.
- Bars and bannersFree-shipping bars, heroes, and countdowns.
- Product rows and toastsFilled from your own catalog.
- Design StudioClick the words, change them, save.
- Targeting and A/B testsWhen, where, who — and A/B on Startup and Grow.
- Unlimited contactsEvery signup kept, on every plan.
- Product deskBulk edits, SEO, and product pictures.
Case studies
- FashionWelcome the drop, then show the rest of the look
- BeautyShow the rest of the routine next to the serum
- HomeA code on the way out, bestsellers on the way in
- Food and drinkA shipping goal, and a welcome code
- TechShow the case and cable with the headphones
Free plan. Billed by Shopify when you upgrade.
FAQ
Setup, themes, billing, and Free limits.
Most stores have a first popup live in about five minutes. Install from the Shopify App Store, pick a design, change the words, and turn on the Castor App embed once in your theme editor. Castor shows you each step.
No. Every design opens in Design Studio, where you click a word to change it and pick a photo from your store. There is nothing to paste into your theme.
Castor works with Online Store 2.0 themes, which covers Dawn and the free Shopify themes plus most paid ones. Popups and bars use a theme app embed. Widgets are a theme block you place in the theme editor.
Yes. On install Castor reads your theme’s button color, font, and logo, and shows every design in your brand before you pick one. You can change the colors at any time.
The gallery has designs shot for fashion, beauty, home, food and drink, and tech stores, plus bars, toasts, and product rows that fit any store. Pick your store type and the gallery shows yours first.
Yes. Free is 3 popups, 3 widgets, unlimited contacts, and every design in the gallery. You stay on Free until you choose to upgrade.
The full detail is in the product guide, the privacy policy, and the terms of service.