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.

About Link Heart Limited | NanoRhino by Link Heart Limited

Link Heart Limited is an AI health technology company headquartered in Houston, Texas. We build NanoRhino — an AI nutrition coach delivered over text message. No app to download, no login to remember. Just text (915) 277-7888, and a real coach is on the other end of the line.

Our mission

People don't fail at weight loss because they don't know the rules. They fail because at 9pm, standing in front of the fridge, they're alone. The cheapest, most reliable way to reach someone in a hard moment isn't an app — it's a text. So we made the coach text you back.

Long-term over shortcuts

Our compass is long-term. We don't sell shortcuts. We don't shame. We don't profit until the weight is actually off. That's why our pricing is $10 per pound lost, capped at $500 — payment only when results are real. Every product decision optimizes for sustainable behavior change, not engagement metrics.

What NanoRhino does

Everything a real nutrition coach does, delivered over text:

Personalized weight-loss plan. Built around your goal, schedule, and favorite foods. Adapts as you go.
Daily meal reminders. Gentle check-ins, never nagging.
Photo calorie counting. Snap a meal, get calorie and macro estimates back in seconds.
Exercise plan creation. Movement that fits your day, your energy, your goal.
Encouragement & accountability. Wins celebrated, hard days listened to — never with shame.
Persistent memory. We remember everything you tell us. The conversation gets smarter every time.

The capabilities are published as an open SKILL on GitHub: NanoRhino/weight-loss-skill.

Privacy

Your health data is sacred. Four explicit commitments:

Encrypted in transit and at rest.
Never sold — to data brokers, advertisers, insurers, or anyone else.
Never shared with third parties for their own purposes.
Never used for advertising. Your data doesn't power ads, anywhere.

You can request deletion of all your personal data at any time, no questions asked. Reach us at our contact page or via the privacy policy.

Contact

Link Heart Limited is based in Houston, Texas. You can reach us through our contact page, or connect on LinkedIn.

Technology that warms hearts.

Our mission

Long-term over shortcuts

What NanoRhino does

Privacy

Contact