Toneshift — Ai Writing As

✨ ToneShift — AI Writing Assistant

Struggling to strike the right tone in your emails, tweets, or LinkedIn posts? ToneShift brings AI-powered writing assistance directly into your favorite platforms — no copy-pasting, no switching tabs.

── HOW IT WORKS ──

1. Start typing in Gmail, Twitter/X, or LinkedIn
2. The ToneShift button (✨) appears near your text field
3. Choose a tone: Professional, Casual, Friendly, Assertive, or Concise
4. Hit "Rewrite" — your text is instantly rewritten in the chosen tone
5. Like a suggestion? Click "Use this" to apply it

── FEATURES ──

🎯 Tone Rewriting
Rewrite any text in 5 built-in tones:
• Professional — polished and business-ready
• Casual — relaxed and conversational
• Friendly — warm and approachable
• Assertive — confident and direct
• Concise — short and to the point

💬 Reply Generator (Pro)
Replying to an email or tweet? Generate 3 ready-to-send reply options based on the message you're responding to.

🌍 Multilingual Support
ToneShift detects the language of your input and responds in the same language. Write in Japanese, Spanish, French, or any language — and get rewrites in that same language.

🔒 Privacy First
Your Anthropic API key is stored locally on your device only. ToneShift never sees your text — it goes directly from your browser to Anthropic's API.

── SUPPORTED SITES ──
• Gmail (mail.google.com)
• Twitter / X (twitter.com, x.com)
• LinkedIn (linkedin.com)

── FREE vs PRO ──

Free:
• Tone rewriting — 10 rewrites/day
• 5 built-in tones
• Works on all 3 supported sites

Pro ($7/month):
• Unlimited rewrites
• Reply generation (3 options per click)
• Up to 5 custom tones
• Priority support

── SETUP ──

1. Install ToneShift
2. Get a free API key at console.anthropic.com
3. Open ToneShift Settings and enter your API key
4. Start writing on Gmail, Twitter/X, or LinkedIn

── YOUR API KEY ──

ToneShift uses your own Anthropic API key, giving you full control over usage and costs. Claude Haiku (the model used) is extremely affordable — typical usage costs less than $1/month.

Questions? Contact us at m.masaki.sm@gmail.com