Shopify product personalizer comparisonKastomise vs Zepto Product Personalizer
Zepto Product Personalizer is the established, lower-cost option builder for Shopify: 22 option types, conditional logic and add-on pricing, from US$9.99 a month. Kastomise is built for print production instead: a live preview on your real print area, a CMYK PDF for every print area of every order, an optional 3D view, and a hosted page that works beyond Shopify, priced by products rather than orders.
Zepto details checked 12 October 2026 on its own website and Shopify App Store listing — sources.
Which one should you choose?
Choose Kastomise if…
- You print the products yourself and want a CMYK PDF for each print area, at the resolution you set, with every order.
- Your print area has an unusual shape, or cutouts and fixed items (like a medal or ribbon) that the design has to work around.
- You want shoppers to see their finished design on a 3D model of the product.
- You also sell outside Shopify, on WooCommerce, Etsy, Wix or BigCommerce.
- You run a headless Hydrogen storefront.
- You’d rather pay by number of products than by number of orders.
Choose Zepto if…
- You need many product options with conditional logic, and to charge extra per option.
- You want shoppers to choose fonts, curve their text or add text effects.
- You want the lowest starting price at modest order volumes (from US$9.99 a month).
- You value a long track record: on the App Store since 2016, with 1,423 reviews and 24/7 live chat.
- You fulfil through Printful, Gelato or ShineOn.
Kastomise vs Zepto at a glance
| Feature | Kastomise | Zepto |
|---|---|---|
| Paid plans | Core from A$69 a month (US$50 through Shopify), Pro with 3D from A$179 a month (US$127 through Shopify), Studio with the 3D teaser from A$319 a month (US$223 through Shopify). Priced by the number of product configs. | Four plans on its Shopify App Store listing: Starter US$9.99, Basic US$19.99, Pro US$34.99 and Unlimited US$69.99 a month, capped by personalised orders a month (100, 200, 500, then unlimited). |
| Per-order fees | None. | None listed. |
| Free plan or trial | Free plan: one product config, no time limit, no card. Paid plans have no separate trial. | 15-day free trial on every plan. No free plan. |
| Where it works | Shopify, as a theme app block with no code. Any other store or marketplace (WooCommerce, Etsy, Wix, BigCommerce) through a Kastomise-hosted page and a design code. | Shopify only, as an app embed or a theme app block. |
| Headless Shopify (Hydrogen) | Yes: one React component and a cart route. | Not mentioned on its site. It offers JavaScript events for developers. |
| Photo upload | JPG, PNG or HEIC. One photo, two side by side, or a grid of four; drag and zoom. No rotate or filters. | Photo upload with crop (optionally to a fixed shape), minimum-size checks and greyscale. A file-upload field also takes documents such as PDF and Word files. |
| AI photo tools | None. | None mentioned. |
| Text and fonts | Shoppers type their text and pick its colour and alignment, within your character limits. You set the font, including your own uploaded fonts. | You upload fonts; shoppers can pick fonts and colours, change size and alignment, curve text in an arc, and add effects like neon or stroke. Monograms too. |
| Clipart and design templates | None. | Your own image sets for shoppers to pick from. No built-in clipart library mentioned. |
| Live preview | Live 2D preview on your real print area, with cutouts and fixed items (like a medal) shown. | Live 2D preview on the product or variant image, a blank canvas or an uploaded image. |
| 3D and AR | Pro: the finished design on a 3D model of your product, with a colour picker for each area. Studio adds a 3D teaser in your product gallery. You supply the .glb or .gltf model. No AR. | Not mentioned. |
| Print-ready files | A CMYK PDF for each print area, with an embedded colour profile and a transparent background, at 72–600 PPI (300 by default). Download from the dashboard. | A PNG preview, plus an optional PDF, vector PDF or SVG with or without the background, downloaded from the Shopify order. CMYK and DPI settings aren’t mentioned. |
| Print areas | Several print areas per product, in any shape, with cutouts or fixed items the design must avoid. | Several views per product (front, back, sides), each with its own fields. |
| Options, conditional logic, add-on pricing | Shoppers choose between the customisation types you set up. No conditional logic or add-on pricing; charge for personalisation through a Shopify variant. | 22 option types (dropdowns, swatches, checkboxes, dates and more), conditional logic, and add-on pricing (flat, percentage or per letter) charged through Shopify’s Cart Transform. |
| Print-on-demand integrations | None: you print from the files. | Works with Printful, Gelato and ShineOn, per its listing. |
| Languages | English. You can rename the Customise button and write your own label for every step. | English, per its listing. Storefront translation isn’t mentioned. |
| Done-for-you setup | Yes, as a paid service, quoted separately. | 24/7 live chat on every plan. No personalizer setup service listed; Zepto Apps sells general Shopify services separately. |
| Shopify App Store reviews | New: listed in September 2026, no reviews yet. | 4.9 from 1,423 reviews. Listed since August 2016, with the Built for Shopify badge. |
The differences that decide it
Print files built for production
Kastomise produces a CMYK PDF for each print area, with an embedded colour profile, at the resolution you set per product (72–600 PPI). Zepto gives a PNG preview and an optional PDF, vector PDF or SVG; its docs don’t mention CMYK or a resolution setting.
Options and add-on pricing: Zepto’s strength
Zepto has 22 option types, show-and-hide rules, and extra charges per option or per letter. Kastomise has none of these: shoppers choose between the customisation types you set up, and you charge for personalisation through a Shopify variant.
How much freedom shoppers get
Zepto lets shoppers pick fonts, curve text and add effects. Kastomise keeps the design on brand: you choose the font, shoppers choose the text, its colour and alignment, and place their photos in the layouts you allow.
Print areas of any shape
Kastomise previews the real print area, in any shape, with cutouts and fixed items such as a medal or ribbon shown so shoppers design around them. Zepto supports several views per product, each sized and placed in percentages on the product image, with a pattern option that can act as a mask.
3D, and selling beyond Shopify
On Pro, Kastomise shows the finished design on a 3D model of your product, with a colour picker for each area. Its hosted page works with any store or marketplace. Zepto doesn’t mention 3D and works with Shopify only.
Priced by products, not orders
Zepto’s plans are capped by personalised orders a month until its Unlimited plan. Kastomise plans are priced by the number of product configs, with no order cap and no per-order fee.
Pricing compared
Zepto’s Shopify App Store listing has four plans, from US$9.99 to US$69.99 a month, each capped by personalised orders a month (100, 200 and 500, then unlimited), all with a 15-day free trial. Its own homepage shows a slightly different set of plans, so check the listing before you install. Kastomise is free for one product config, then starts at A$69 a month (US$50 through Shopify) for 5 product configs, with no cap on orders and no per-order fees. Above 500 personalised orders a month, Zepto’s Unlimited plan is US$69.99, while Kastomise Core is US$50 through Shopify for up to 5 product configs. At low order volumes, or if you need 3D or many product configs, Kastomise costs more.