AstrologerAI: an AI astrology app localized into 52 languages
How the AstrologerAI app translated its entire experience into 52 languages with LocalePack — 6.3M tokens for $58.73 — to reach a worldwide audience in their own language.
Purpose-built for react-i18next
AI localization for react-i18next apps
Upload your namespace JSON files, pick target languages, pay once, and download locale files ready for useTranslation().
{{placeholder}} & plural-safe
useTranslation() compatible
Transparent pricing
How it works
Three simple steps to localize your react-i18next project. Upload namespace JSON, pay once, and download files ready for I18nextProvider.
01
Upload namespace JSON
Drop your locales/ namespace files (e.g. locales/en/common.json). We detect {{placeholders}} and _one/_other plural keys automatically.
02
Select languages
Choose from 52 languages. See transparent pricing based on your file size and complexity before you pay.
03
Download
Pay once via Stripe. Get a locales/ ZIP ready to pass to I18nextProvider—same namespace structure, translated values.
Live pricing demo
Transparent pricing estimator
See exactly what you'll pay before uploading. Final quote is computed after upload based on file complexity and languages selected.
1. Upload file
Drop JSON file here
or click to browse
react-i18next namespace JSON (locales/**). Max 500KB.
2. Select languages
|
3 of 52 languages selected
3. Your estimate
Languages selected3
Final price calculated after file upload on checkout page
One-time payment • No subscription
Built for react-i18next developers
Purpose-built for useTranslation(), I18nextProvider, and namespace JSON—not a generic translation tool.
useTranslation() namespace support
Keeps common.json, auth.json, and all namespaces aligned across every locale so useTranslation('ns') works without changes.
{{placeholder}} safety
Preserves interpolation tokens like {{name}} and {{count}} byte-for-byte—no broken strings in your React components.
Plural-key handling (_one/_other)
Handles react-i18next plural splits such as key_one and key_other so grammar stays correct across all target languages.
Ready for I18nextProvider
Download a locales/ ZIP with the same folder structure—drop it into your repo and pass it straight to I18nextProvider.
Parallel translation
All languages are translated simultaneously. Most jobs complete in under 5 minutes.
One-time payment
No subscriptions, no monthly fees. Pay once per job, download forever.
How react-i18next JSON fits together
react-i18next loads locale files via I18nextProvider. LocalePack generates all namespace files in the same structure your app already expects.
locales/ folder structure
locales/ ├── en/ │ ├── common.json ← source namespace │ └── auth.json ├── de/ │ ├── common.json │ └── auth.json ├── fr/ │ └── ... └── ... (52 locales)
useTranslation() hook usage
// locales/en/common.json
{
"welcome": "Hello {{name}}",
"items_one": "{{count}} item",
"items_other": "{{count}} items"
}
// After i18next.init({ ns: ['common'] })
i18next.t('common:welcome', { name: 'Ada' });
i18next.t('common:items', { count: 5 });Hook API
t()
I18nextProvider
i18next.init()
Placeholders
{{variable}}
Plurals
_one/_other
Why not just use generic tools?
Generic translation tools break useTranslation() namespace JSON, double-brace placeholders, and _one/_other plural conventions.
LocalePack | Manual translation | Generic TMS | |
|---|---|---|---|
| Setup time | 2 minutes | Hours per language | 30+ minutes |
| Cost transparency | |||
| Namespace JSON support | |||
| {{placeholder}} & plural safety | |||
| Speed (52 languages) | < 5 min | Weeks | Hours |
| Best for | react-i18next apps | Small projects | Enterprise CMS |
Success Cases
Real projects that used LocalePack to reach a global audience in up to 52 languages.
DevToys.pro: 400% international traffic growth across 52 languages
How the DevToys.pro web app translated its entire UI into 52 languages with LocalePack — 5.8M tokens for $58.44 — and quadrupled its international organic traffic.
DevToys New Tab: a Chrome extension localized UI + store listing in 52 languages
How the DevToys New Tab Chrome extension localized both its in-extension UI and its Chrome Web Store listing into 52 languages to reach a global audience.
LocalePack localized itself into 52 languages — with LocalePack
We used our own tool to translate the entire LocalePack site into 52 languages — 2.9M tokens for $27.37 — so developers worldwide find us in their own language.
Trusted by react-i18next developers
“Our React app went from English-only to 12 languages in one afternoon. useTranslation() namespaces came back intact.”
Sam K.
React developer, SaaS startup
“I18nextProvider just worked after dropping in the ZIP. No manual merging, no broken {{variables}}.”
Priya M.
Frontend engineer
“Saw the price estimate before I uploaded a single file. Exactly what I needed for a one-off localization job.”
Chris D.
Freelance React developer
52
Locales supported
100%
{{placeholder}} & plural-safe
ZIP
Namespace ZIP
Related developer guides
Deep dives on the formats, APIs and errors behind this page — written for developers, not translators.
i18next JSON format: namespaces, {{placeholders}}, and _one/_other plurals
A complete reference for the i18next JSON locale format — namespace files, double-brace {{placeholder}} syntax, _one/_other plural keys, nested objects, and how to structure your locales/ folder.
Next.js i18n: next-intl vs react-i18next vs i18next
Practical comparison of the three leading Next.js i18n libraries — App Router support, file format, TypeScript safety, pluralization syntax, and when to pick each one.
LocalePack vs POEditor for i18next JSON
Honest comparison of LocalePack and POEditor for i18next JSON translation. POEditor is a collaborative TMS with a string-count subscription and a free tier; LocalePack is upload → pay once → download.
Improve AI translation quality in messages.json
How to get accurate AI translations for your Chrome extension: write description fields that give the model context, define placeholders with examples, avoid string concatenation, and handle plurals, casing, and length expansion.
Ready to ship your react-i18next app globally?
Pay once • Download namespace ZIP • Ship globally
Try LocalePack