How do I get started?

Visit https://nanorhino.com/message and pick a channel. SMS is live in the US right now — text START to (915) 277-7888 and the AI replies in seconds. WhatsApp, iMessage, and Telegram are coming soon; you can leave your email on the same page to be notified at launch.

Do I need to download an app?

No. SMS is the primary way to use NanoRhino — it lives in your Messages app. We also offer an optional iOS app for users who prefer it, but it's not required.

Is there a message limit? What does it cost to text?

NanoRhino SMS coaching is free for up to 50 messages per day. Standard carrier message and data rates may apply. If you exceed your daily free allowance, additional usage fees may apply — we'll always notify you before any charge.

How do I unsubscribe?

Reply STOP at any time to unsubscribe. Reply HELP for assistance. You can re-enroll anytime by texting START again.

What is Link Heart Limited?

Link Heart Limited is an AI health technology company based in Houston, Texas. We build NanoRhino, an AI-powered weight loss companion that provides personalized nutrition coaching with a unique pay-for-results model.

NanoRhino is an AI weight loss coach you text. Think of it as a personal AI nutritionist, AI dietitian, and AI calorie counter rolled into one — sent to you over SMS at (915) 277-7888. No app required. It provides personalized coaching, daily check-ins, photo-based meal logging, and emotional support throughout your weight-loss journey. You only pay $10 per pound you actually lose.

Is NanoRhino a free AI weight loss coach?

Texting NanoRhino is free for up to 50 messages per day, and you only pay if you actually lose weight — $10 per pound, capped at $500 total. There's no subscription, no upfront fee, and no charge if the weight doesn't come off. So functionally it's a free AI weight loss coach until you get results, then it's a results-based fee.

How does pay-for-results pricing work?

NanoRhino charges $10 per pound you lose, capped at $500 total. If you don't lose weight, you don't pay. This aligns our incentives with your success — we only succeed when you do.

Is NanoRhino private and secure?

Yes. NanoRhino is a private, judgment-free space — your conversations live in your Messages app. There are no social feeds, no posting, and no sharing. Your health data is encrypted, never sold, never shared with third parties, and never used for advertising. You can request deletion of all your data at any time.

How is NanoRhino different from other weight-loss tools?

Most apps make you tap through screens to log calories or follow generic meal plans. NanoRhino is a conversation: text a meal photo and get a calorie estimate back; vent about a hard day and get coached through it. It's like having a private nutrition coach on speed dial — at a fraction of the cost.

How is NanoRhino different from ChatGPT or other general AI assistants?

Three reasons. First, NanoRhino remembers everything you've told it — goals, allergies, last week's wins, your hard days. ChatGPT loses that context across conversations. Second, NanoRhino does the math reliably — calorie counts, macro targets, weekly weight-loss math — without the arithmetic slips a general model makes. Third, NanoRhino is purpose-tuned to be a non-judgmental coach. A general AI tries to be helpful, but it isn't designed to meet you consistently in cravings, shame, or setbacks the way a real coach should.

Where is Link Heart Limited located?

Link Heart Limited is headquartered in Houston, Texas, United States.

Support

We're here to help. If you have questions about NanoRhino, our SMS service, your account, or anything else, reach out to us.

Contact Us

support@nanorhino.com

Address

1211 Caroline St Unit 1000, Houston, TX 77046, United States

SMS / Text Messaging Help

If you're receiving text messages from NanoRhino and need help:

To stop messages: Reply STOP to any message
For help: Reply HELP to any message
Questions: Email us at support@nanorhino.com

Message and data rates may apply. Message frequency: up to 10 messages per day.

Frequently Asked Questions

How do I cancel my subscription?

Subscriptions are managed through the App Store (iOS) or Google Play (Android). Go to your device settings to manage or cancel.

How do I delete my account?

Email support@nanorhino.com with the subject "Delete My Account" and we will process your request within 30 days.

Is my data safe?

Yes. We do not sell your personal data. Read our Privacy Policy for full details.