How do I get started?

Start with the free TDEE calculator at https://nanorhino.com/tdee — a 5-minute AI interview (no app, no account) that gives you the calories you actually burn plus a starter plan. Then put it to work with a coach by text: SMS is live in the US at (915) 277-7888, with WhatsApp, iMessage, and Telegram coming soon. Already know your numbers? Text START to (915) 277-7888 to jump straight in.

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. Think of it as a personal AI nutritionist, AI dietitian, and AI calorie counter rolled into one. It starts with a free TDEE calculation, turns that into a personalized plan, and then coaches you by text at (915) 277-7888 — answering questions, logging meals you text or photograph, and adjusting as you go. No app required. 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 apps like MyFitnessPal or Cal AI?

Apps like MyFitnessPal and Cal AI are trackers — they tell you the calories in your meal and stop there. NanoRhino logs meals too (text or photo a plate over SMS), but the product is the coaching: it sets your targets, checks in weekly, explains why the scale moved, and adjusts your plan — and you only pay when you actually lose weight ($10 per pound, capped at $500). See the full breakdowns: NanoRhino vs MyFitnessPal, NanoRhino vs Cal AI, or browse all comparisons.

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.

Honest comparison

NanoRhino vs Lose It!

Q: 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.

Lose It! is a well-built, affordable calorie tracker with a big food database and a friendly app — a solid choice if logging is what you want. But logging is the part most people can already do; what stalls progress is everything after the number. NanoRhino logs your meals over text too, then coaches you on what to eat, hits your protein, and adjusts the plan — and only charges when the weight is actually off.

Text START to your coach

Pay only for results — $10 per pound lost, capped at $500.

Side by side

NanoRhino vs Lose It!, honestly.

Lose It! is a popular calorie-tracking app with a large food database, barcode scanning, and a free tier. Free tier available; Premium about $39.99/year or $9.99/month as of 2026 (lifetime purchase also offered).

Feature and pricing comparison between NanoRhino and Lose It!
Feature	NanoRhino	Lose It!
What it is	AI nutrition coach you text (SMS)	Calorie-tracking app + database
Food database / barcode scan	AI estimates from text or photo	Large database + barcode scanner
Coaching & accountability	Yes — plans, check-ins, replanning	No — you log and self-manage
Effort to log	Text it in words or a photo	Search/scan and tap through screens
App / login required	No — lives in your Messages app	Yes — download + account
Pricing model	Results-based: $10 per pound lost, capped at $500. No subscription, no upfront fee, no charge if you don't lose weight.	Free tier or Premium (~$9.99/mo or ~$39.99/yr, 2026), pay regardless of results
Charged only if you lose weight	Yes	No

Lose It! pricing and features reflect publicly available information as of 2026 and may change. NanoRhino is not affiliated with Lose It!.

No strawmen

Where each one wins.

Where Lose It! wins

Affordable Premium (around $39.99/year) and a genuinely usable free tier — one of the better-value trackers.
A large food database, barcode scanner, and a long track record with a friendly, approachable app.
Strong if you mainly want a clean, low-cost place to log and you don't need a coach.

Where NanoRhino wins

A coach, not a log — it acts on your numbers instead of just storing them.
Lower friction: text what you ate or a photo, instead of searching a database and tapping screens.
No app, no account — it's a text thread.
Pay only for results: $10 per pound lost, capped at $500 — versus a subscription you pay whether the scale moves or not.

Questions

NanoRhino vs Lose It!, answered.

Is NanoRhino just a tracker like Lose It!?

No. Lose It! is a calorie tracker — it logs your food and shows your total. NanoRhino logs meals too (text or photo over SMS), but the product is the coaching: setting your targets, checking in weekly, explaining the scale, and adjusting your plan as life changes.

Lose It! is cheap. Why pay per pound instead?

Lose It! Premium is affordable — around $39.99/year as of 2026 — but you pay it whether or not you lose weight, and it's still just a log. NanoRhino charges $10 per pound you actually lose, capped at $500, so you pay nothing until the weight is off, and you get coaching, not just tracking.

Can I keep using Lose It! and add NanoRhino?

Absolutely. If you like logging in Lose It!, keep it — and let NanoRhino handle the coaching, accountability, and the daily questions a tracker can't answer.

Do I need to download an app for NanoRhino?

No. Lose It! is an app with an account. NanoRhino runs over SMS in your Messages app — text START to (915) 277-7888 to begin. An optional iOS app exists but isn't required.

Is NanoRhino private?

Yes. Your conversations live in your Messages app, your health data is encrypted, never sold, never shared, and never used for advertising, and you can request deletion at any time.

Keep comparing

See how NanoRhino compares to others.

NanoRhino vs Cal AI NanoRhino vs MyFitnessPal NanoRhino vs Noom NanoRhino vs WeightWatchers NanoRhino vs TextCalio NanoRhino vs a human dietitian NanoRhino vs MacroFactor NanoRhino vs Cronometer NanoRhino vs MealByMeal NanoRhino vs Simple NanoRhino vs ChatGPT

Or browse all NanoRhino comparisons.

Stop tracking. Start losing.

Text or photo your meal and let an AI coach handle the plan. You only pay when the weight is actually off — $10 per pound, capped at $500.

Text your coach

Not sure of your numbers yet? Start with the free TDEE calculator.