You’re expanding into a new country and your checkout still shows USD to a shopper in Berlin. Translating your store and converting currency by hand doesn’t scale past a handful of pages. A dedicated app handles both. This roundup compares three of the best shopify international seo apps, verified live against the current Shopify App Store, not a recycled list from an old post.
Want product copy that reads natively in your new market, not machine-translated? Plug In AI generates original titles and descriptions directly in the language you choose, from a list of dozens. No separate translation pass needed.
Want to understand how translated pages actually get indexed first? Read our multi-language SEO guide or the hreflang explainer. This post is about which dedicated app to install, not how international SEO works under the hood.
1. Transcy: AI Language Translate — top all-in-one pick
Transcy handles both translation and currency conversion in one app, which matters if you don’t want to run two separate subscriptions for two halves of the same problem. It translates into 147+ languages using AI engines like OpenAI, DeepL, and Gemini, plus manual edits, and converts across 169+ currencies with geolocation-based auto-switching.
Best for: merchants who want translation and currency handled by a single app instead of stitching two together.
Pricing: Free plan with no word or pageview limit. Local Plus $14.90/mo, Regional $29/mo, Continental $69/mo for more languages and markets.
Pros:
- 4.5-star rating across 2,591 reviews, the largest review base in this list.
- Combines translation and currency conversion, avoiding a second subscription.
- Free plan has no word or pageview cap, unusual for this category.
Cons:
- Free plan supports fewer languages and markets than the paid tiers.
- A combined tool can be more than you need if you only want currency display.
2. BUCKS Currency Converter PRO++ — best for currency only
If translation isn’t your problem yet and currency display is, BUCKS is a dedicated tool built for exactly that. It auto-switches prices by geolocation across more than 160 currencies and sits in your theme’s header without a full storefront redesign.
Good fit for: stores that sell in English everywhere but want local-currency pricing shown automatically.
Pricing: Free plan (unlimited currencies, automatic geolocation switching). Plus $9.99/mo, Pro $19.99/mo or $95.90/yr for custom conversion rates and AI analytics.
Pros:
- 5.0-star rating across 1,229 reviews, the highest rating in this list.
- Genuinely useful free plan with unlimited currencies and geolocation switching.
- Built for Shopify designation, meeting Shopify’s own performance and integration standards.
Cons:
- No translation features at all, so you’ll still need a second app for that.
- Custom conversion rates are locked to the paid tiers.
3. langify — translate your store — deepest translation control
langify is one of the longer-established dedicated translation apps, and it shows in how much control it gives over the translation itself: manual and AI translation side by side, URL and SEO field translation, and metafield support most lighter apps skip.
Ideal for: merchants who want granular control over translated SEO fields and don’t need currency conversion bundled in.
Pricing: Free plan (unlimited manual translations, up to 5 languages). Basic $17.50/mo, Growth $29.95/mo, Premium $59.95/mo for AI word allowances and up to 32 languages.
Pros:
- 4.7-star rating across 730 reviews.
- Translates URLs and SEO fields, not just visible page text.
- Free plan supports real manual translation, not just a trial cap.
Cons:
- No currency conversion, so a second app is still needed for that.
- Deeper AI word allowances are gated behind the higher-priced tiers.
How to pick between them
The bottom line: the right app depends on whether translation, currency, or both are actually your bottleneck right now.
If you need both translation and currency handled together, start with Transcy. When your store is already in one language and the only gap is showing local pricing, BUCKS is the more focused, cheaper fit. And when translation quality and SEO-field control matter more than currency display, langify’s manual-plus-AI approach gives you more to work with.
Where Plug In AI fits
None of these three apps write new product copy in another language. Instead, they translate or convert currency on top of what you already have. Plug In AI works differently, because it generates original titles and descriptions directly in a language you pick from a long list, across your catalog in bulk. You choose one target language per generation pass, not several at once. That’s a different job, not a competing one. So if you want your existing English copy translated as-is, use one of the three apps above. But if you’d rather have copy written natively for a specific market from the start, that’s what Plug In AI does instead.
Frequently asked questions
Do I need separate apps for translation and currency conversion?
Not necessarily. Transcy combines both in one app. If you only need one, a dedicated tool like BUCKS (currency only) or langify (translation only) is usually cheaper and more focused than a bundled option.
Which of these apps has a genuinely useful free plan?
BUCKS Currency Converter PRO++ has the most generous free tier here, with unlimited currencies and automatic geolocation switching at no cost. Transcy’s free plan has no word or pageview cap but covers fewer languages than its paid tiers. langify’s free plan supports real manual translation, capped at 5 languages.
Does Plug In AI translate my store like these three apps do?
Not exactly. Plug In AI generates original product titles and descriptions directly in another language, rather than translating your existing English copy word-for-word. Its language list runs to dozens of options, from major European languages to Hindi, Arabic, Japanese, and many more, but you generate in one chosen language at a time, not several at once. If you want your current copy translated as-is, the three apps above are built for that instead.
How is this different from the multi-language guide or hreflang explainer?
That guide and the hreflang explainer cover how translated pages get indexed and how Shopify Markets signals language to Google. This post compares which app to actually install to create the translation and currency conversion in the first place.
Should I audit my store before or after installing a translation app?
Before, ideally. A translation app multiplies your existing on-page content into every new language. If your main-language titles and descriptions are missing target keywords, that gap gets copied into every market you expand into.
Write product copy that reads natively in your new market
Plug In AI generates original titles and descriptions directly in the language you choose, from a list of dozens, across your whole catalog in bulk. No machine-translation pass required.