Standard, Native, or Slang — all three at once. Your words are never used to train AI.
7-day free trial · No credit card required
Launch Sugu-Eng and tap the microphone. No setup, no configuration — ready instantly.
Say what you want to express in your language. Just talk.
In ~0.5 seconds, get Standard, Native and Slang versions. Choose one and paste it anywhere.
Same thought, three different registers — formal, natural, casual. Pick what fits.
Results arrive before you've finished the thought. Fast enough for real-time messaging.
Standard, Native, Slang — one tap gives you all three so you always have the right tone.
Training is disabled on every API request — a technical setting, not just a policy.
Every translation saved locally. Browse, re-copy, and build your personal phrase library.
Speak naturally — no typing needed. Also supports text input for silent situations.
AI reads context, formality and idioms. Results feel natural, not word-for-word.
When you need the right English for an email or message, just say it. Get three tones at once and pick the one that fits.
No hesitation abroad. Speak your language and get the English you need, right on the spot.
Three phrasings side by side. Learn by seeing how the same idea can be said differently — not by drilling lists.
Captions, replies, DMs — get options that sound natural and pick the one that matches your vibe.
Living abroad, there were plenty of moments: "How do I say that in English?" Pulling up a translation app and typing it out always felt too slow. And knowing what you typed might end up on someone's server felt uncomfortable. That friction is what started this.
Formal, natural, casual — the same thought lands differently depending on the situation. Sugu-Eng gives you all three so you can pick the one that actually fits. Privacy concerns were real too, so it was built from the start to keep your words off any external server.
Privacy isn't a policy statement — it's baked into the API call itself.
Claude API is called with training disabled. Not a policy — a technical flag on every request.
Your translation history lives in local storage on your iPhone — never on external servers.
Voice passes through Apple's servers (retained ≤2 yrs by Apple). Use text mode if that's a concern.
Try free for 7 days — no credit card needed.
30 translations / day
Unlimited + nuance notes
Every translation uses the Claude API, which has a real cost per request. No ads, no data selling — just a flat monthly fee.
Sugu-Eng turns your thoughts into natural English in 0.5 seconds.
7-day free trial · iOS only · ¥500/month after trial