Take a custom product into a second market and three things change at once. The currency has to convert. Every option has to speak the customer's language. And a price calculated from sizes, materials, or quantities has to come out right in the new currency. Most options apps were never built for that combination.
Appify Custom Product Options is built for exactly that. It converts calculated prices, fees, and totals automatically through Shopify Markets. It also translates option labels, descriptions, and price summaries into up to 10 languages, with AI doing the heavy lifting. You describe the product to Chat with AI and it builds the options, the pricing, and the translations: the easy parts and the hard parts.
It is not the only name you will meet while searching, though. SE: Option Price Calculator takes a focused, calculator-first approach to the same problem. Easify and Globo are two of the most-reviewed options apps in the category. And Shopify's own free Translate & Adapt belongs in the conversation too, since it covers your store content, though not the text an options app renders.
Here is how all of them compare for international selling, and how to pick.
What to check before you install
International support means five different things for custom products. Check all five:
- Do the options translate? Option labels, help text, and error messages are rendered by the app, not by your theme. If the app has no language system, that text stays in your default language no matter what your store is set to.
- Do the options sent to the cart translate too? Translating the calculator is only half the job. The option names and the values the customer selected should follow their language onto the cart line and the order. And your team should still be able to read every order in your own language.
- Does the customer see the right language automatically? The app should follow the customer's Shopify locale, not ask them to pick.
- Do calculated prices convert? A price built from measurements, rate tables, or quantity tiers has to convert through your Shopify Markets exchange rates, including any fees. Even fixed add-on prices need converting correctly, and calculated totals raise the bar well past what most apps were built for.
- Is there a design tool at all, and does it translate? Many custom-product stores eventually want customers designing on the page. Most options apps offer a preview at most, and fewer still translate the design editor's buttons and prompts.
1. Appify Custom Product Options: built for calculated prices across markets
Appify Custom Product Options treats international selling as part of the pricing engine, not an add-on.
Currency is automatic. When your store runs Shopify Markets with more than one currency, the app converts every option price, fee, and calculated total using your Markets exchange rates. It respects the percentage-based price adjustments you set per market in Shopify.
There is nothing to configure inside the app, and the price summary updates in the customer's currency in real time. See the multi-currency documentation for the details.
Languages are built in. You can enable up to 10 languages per calculator. Option labels, descriptions, price summary fields, cart property names, and system text are all translatable.
A bulk AI translate fills every missing string across all enabled languages at once, and you can edit any string by hand afterwards. Free AI credits for this come included with the app.
Translation reaches the cart, too. Option names and the values a customer chose can follow the shopper's language on the cart line and order, while the app's Orders page still shows every order in your language. The storefront picks the customer's language automatically from their Shopify locale, and the languages guide walks through the setup.
There is a full Product Designer in the box, and it translates. Most options apps stop at a live preview, if they offer a design tool at all. Appify Custom Product Options includes a complete design editor with print-ready output, on every plan.
And it speaks your customer's language. Built-in editor text, like tool names and layer controls, comes pre-translated for supported languages, and your own labels, like the Save and Done buttons, get their own translation fields.
And here is the part that matters most as your store grows: every plan includes every feature. Formula pricing, pricing tables, quantity discounts, the Product Designer with print-ready output, cart editing, reorder, translations, all of it, from day one, with a 14-day free trial. When your products get more custom next year, the features are already installed. Nothing sits behind a bigger plan.
Merchants rate it 5.0 stars on the Shopify App Store.
Best for: merchants selling measurement-based, formula-priced, or configurable products in more than one market. It is the strongest fit when prices are calculated, and it handles simple fixed-price options just as easily.
2. SE: Option Price Calculator: the focused calculator alternative
SE: Option Price Calculator is another strong choice, built calculator-first: it prices customizable and measurement-based products with formulas and pricing tables, in categories like blinds, wallpaper, and custom fabrication. It converts prices through Shopify Markets, and its listing includes translation support.
Where it fits: merchants who specifically want the focused Option Price Calculator workflow. For the broader platform, including AI-assisted setup, the Product Designer, and the Shopify Markets integration described above, Appify Custom Product Options is the one to start with.
3. Easify Custom Product Options: strong entry-level option with translation
Easify Custom Product Options is one of the most-reviewed options apps in the category, at 4.9 stars across more than 3,000 reviews.
Its listing highlights translation among its customization features. Shopify Markets currency conversion is not among its listed features, so test calculated prices in your markets before committing. Formula pricing, per Easify's own docs, means dimension expressions like width times height times a unit price, set up with the main product price at zero so the charge is not doubled.
Where it fits: personalization fields, swatches, and fixed add-on pricing. Worth knowing before you choose: all of that is also inside Appify Custom Product Options, on every plan.
4. Globo Product Options, Variant: multi-language on its higher plans
Globo Product Options, Variant is another category heavyweight, at 4.9 stars across more than 5,000 reviews.
Multi-language support is listed as a feature on its higher plans. Like Easify, Shopify Markets currency conversion is not among its listed features, so check calculated-price behavior in your own markets during the trial. Pricing, per Globo's docs, works as add-on charges, including dimension add-on formulas, with calculated charges applied as separate lines in the cart.
Where it fits: long option lists with conditional logic on fixed add-on pricing. The same jobs are covered in Appify Custom Product Options too, alongside the pricing engine these setups eventually grow into.
The free piece: Shopify Translate & Adapt
Shopify's own Translate & Adapt is free and translates your store content: products, collections, and pages. It auto-translates up to two languages, and you can add more translations manually.
Use it, but know where it stops. Text rendered by an options app lives inside that app, so it is translated by the app's own language system rather than your store translation tool.
That is why the options app you choose needs its own translation support. The two work side by side: Translate & Adapt for your store content, your options app for the configuration experience.
Side by side
| App | Rating | Option translation | Calculated-price currency conversion |
|---|---|---|---|
| Appify Custom Product Options | 5.0 | Up to 10 languages, AI bulk translate, Product Designer included | Automatic via Shopify Markets rates |
| SE: Option Price Calculator | 4.5 | Translation listed as a feature | Yes, via Shopify Markets |
| Easify Custom Product Options | 4.9 (3,043) | Translation listed as a feature | No |
| Globo Product Options, Variant | 4.9 (5,030) | Multi-language on higher plans | No |
| Shopify Translate & Adapt | 4.5 (1,430) | Store content only, not app-rendered text | Handled by Shopify Markets itself |
Based on each app's public listing and documentation, checked September 16 and 17, 2026. Features change, so confirm on each listing.
Beyond this one topic: the across-the-board gap
Translation and currency are one slice. The bigger difference is what else is in the box, and what it costs you in upgrades to reach it. In most options apps, growing means unlocking features plan by plan. In Appify Custom Product Options, every plan already has everything.
That is what extensibility means in practice: the store that starts with three simple dropdowns and later needs measurement pricing, a design tool, or print-ready files never switches apps and never upgrades plans to get there.
The formula engine shows the same pattern. Where other options apps list formulas at all, their own docs describe dimension add-ons layered on top of the base price, with workarounds like zeroing out the product price or separate add-on lines in the cart. In Appify Custom Product Options, the formula is the product price itself, on one native cart line. SE: Option Price Calculator is the one other app in the table with a true formula engine, which is exactly its calculator-first specialty.
| Capability | Appify Custom Product Options | SE: Option Price Calculator | Easify Custom Product Options | Globo Product Options, Variant |
|---|---|---|---|---|
| Formula and measurement pricing | Full engine, inline variables, every option, final price calculation, every plan, AI-generated formulas | Full engine, every option, final price calculation, every plan | Very limited, dimension option only, no formula engine, only to set area-based price, higher plan only | Very limited, dimension option only, no formula engine, only to set area-based price, higher plan only |
| Pricing tables (rate sheets) | Yes, every plan | Yes, every plan | No | No |
| Built-in design editor | Full Product Designer, every plan | No | Live preview, on a higher plan | Live preview, on a higher plan |
| Print-ready files, cut lines, proofs | Yes, every plan | No | No | No |
| Cart editing of configured items | Yes, every plan | On a higher plan | On a higher plan | On a higher plan |
| Reorder and abandoned-cart recovery that keep options | Yes, every plan | No | No | No |
| Option values translated on the cart and order | Yes, with the Orders page in your language | No | No | No |
| AI builds and maintains the setup | Yes, every plan | No | No | No |
| Every feature on every plan | Yes | No | No, plan-gated | No, plan-gated |
Same sources, same dates. The pattern is consistent: capable apps for the basics, with the advanced work either gated or absent. Everything merchants come to those apps for lives inside Appify Custom Product Options as well, so choosing them is choosing fewer features, not different ones.
How to decide
- Calculated prices, measurements, or rate tables, sold internationally: Appify Custom Product Options. Currency conversion and translation are built into the pricing engine itself.
- Only fixed add-on prices, for now: Easify and Globo both serve that job. So does Appify Custom Product Options, with the rest of the platform already installed for the day your products get more custom. The real question is not which app can do today's job, it is which one still fits next year.
- You already run the Option Price Calculator workflow: SE: Option Price Calculator keeps that workflow.
- Whichever options app you pick: pair it with Translate & Adapt for the rest of your store.
For the wider picture on pricing complex products, our guide on how to price complex custom products on Shopify covers the building blocks. And building a custom Shopify calculator without code shows the setup end to end. When you are ready to launch a new market, how to sell custom products in multiple languages and currencies walks through the exact setup.
FAQ
Does Shopify translate product options from apps automatically?
No. Shopify's translation tools cover store content like products, collections, and pages. Text rendered by an options app is translated inside that app, which is why translation support belongs on your checklist when choosing one.
Can calculated prices convert to the customer's currency?
With Appify Custom Product Options, yes. Option prices, fees, and calculated totals convert automatically at your Shopify Markets exchange rates, including the percentage-based price adjustments you set per market.
How many languages does Appify Custom Product Options support?
Up to 10 languages per calculator. The customer's language is picked automatically from their Shopify locale, and missing strings fall back to English.
Are AI translations included?
Yes. Free AI credits come with the app, and you can also type or edit any translation by hand whenever you want a human touch.
Does Appify Custom Product Options charge more for advanced features?
No. Every plan includes every feature: advanced pricing, the Product Designer, translations, the post-purchase tools, and new features as they ship.
Do I still need Shopify Markets?
Yes. Markets is where you configure your currencies, exchange rates, and per-market pricing. Appify Custom Product Options reads those settings and applies them to calculated prices automatically.
Every market, priced in its own currency.
Every feature, every plan · AI builds it for you · Nothing to outgrow