— For people who've tried everything —

Know exactly what
your body burns.
Then eat to it —
we'll coach the rest.

It starts with your TDEE — the calories you actually burn in a day. A 5-minute AI interview calculates yours, then turns it into a daily target, a protein floor, and meal ideas you'll actually eat.

Works with GLP-1s, lifting splits, vegetarian / low-carb / family meals — you message when you want, we adapt.

Calculate your free TDEE

Free · no account · about 5 minutes · iOS app

Already know your number? Message your coach to start. WhatsApp live now · iMessage & RCS coming soon.

Private. Not used for ads. Ever.·Built in Houston, TX·WhatsApp live worldwide · SMS in the US

No subscription. Pay only when the weight is gone.

No app to install.

It works in your messaging app. That's it.

Private by default.

No social feeds, no posting. Never sold, never used for ads.

Works with your meds.

Built to complement GLP-1s, thyroid meds, and chronic-condition realities — not fight them.

— Straight from the phone —

This is what coaching
by text looks like.

Verbatim conversations from real members — names removed, typos kept. Because that's how real texting looks.

Meal photo sent to NanoRhino: chicken fajita plate with Mexican rice and refried beans

📝 Dinner logged! 🍽️ This meal: 836 kcal | Protein 58g | Carbs 81g | Fat 32g · Grilled chicken fajita strips w/ peppers & onions — 380 kcal · Mexican rice — 220 kcal · Refried beans — 220 kcal · Lettuce & tomato garnish — 16 kcal 📊 So far today: 🔥 1,937/2,325 kcal — 83% Protein 121.3g | Carbs 180g ✅ | Fat 81.9g ✅ Great fajita choice — lean protein and veggies did the work. You've got 388 kcal left — if you're hungry later, a light snack fits perfectly; otherwise you're set for the day.

No caption, no menus — one photo, full macro breakdown in seconds.

Weigh it 182.0

Logged ✓ 182.0 lb Nice drop — down from 184.7 last Friday, and that's four weeks running in the right direction. Keep this pace up and the trend stays strong. 💪

— Later that morning —

Meal photo sent to NanoRhino: seasoned beef patty in a glass container

📝 Lunch logged! 🍽️ This meal: 330 kcal | Protein 28g | Carbs 3g | Fat 23g · Beef patty (seasoned, pan-fried) — 330 kcal

No they are grilled

✏️ Updated lunch to grilled beef patty — 30 kcal less (330→300) ✅ Locked in — full day: 🔥 1,227/2,005 kcal — 61% Protein 81g | Carbs 59g ⬇️ | Fat 73g ⬆️ Fat's still running a bit high — for dinner, grilled chicken breast with some veggies would balance it out nicely.

The coach remembers your trend — and fixes the log when you talk to it like a person.

5th 16.9 oz water bottle done

💧💧💧💧💧 Five bottles — 84.5 oz! Crushing the hydration today. 🙌

Thank you. Youre a great accountability buddy.

That means a lot! You've had a really solid day — protein coffee start, a big protein-packed salad, logged everything honestly including the corrections. That's exactly how this works. 💪

Honest logging, zero judgment — in the user's own words (typo included).

Thank you. Youre a great accountability buddy.
— a member, June 2026 (typo and all)
See more real conversations

Individual experiences, shared with identifying details removed. Results are not typical — individual results vary.

Why the scale won't move

Most diets start from
the wrong number.

  • Activity-bucket calculators miss your real burn by 300–500 calories.
  • So your “deficit” is actually maintenance — and the scale won't budge.
  • Generic targets ignore the protein that protects your muscle.
  • Static plans don't survive a busy week, a trip, or a dose change.

Get the number right first — then the rest finally works.

How it works

Your number, your plan,
your coach.

01

Get your real TDEE.

Answer a 5-minute AI interview about your day — no account, no app. It calculates the calories you actually burn, broken down line by line.

N

NanoRhino

WhatsApp

today

5'10", 176 lb, desk job, ~6k steps, lift 3×/week

Got it — your TDEE lands around 2,150 cal/day. Here's the full breakdown: resting burn, steps, workouts, digestion. 👇

02

Turn it into a plan.

Your number becomes a daily calorie target, a protein floor, and meal ideas built around your goal and the foods you actually eat.

N

NanoRhino

WhatsApp

today

make it a plan i can actually follow

Done — 1,650 cal/day, 140g protein. Easy breakfasts, a burger night Friday 🍔, batch-prep Wednesday. Want to tweak anything?

03

Live your days in chat.

Snap a photo, forward a nutrition label, or just type what you ate — calories and protein come back in seconds. Got something wrong? Say so in plain English and the log fixes itself.

N

NanoRhino

WhatsApp

today
Meal photo sent to NanoRhino: french toast sticks with sugar-free syrup

📝 Breakfast logged!

French toast sticks + SF syrup — 185 cal · 5P / 31C / 5F

🔥 185 / 1,650 Cal11%

Plenty of runway — a protein-forward lunch would be a great move

P.S. I can see a supplement bottle in the background — if it has calories, tell me and I'll add it. 👀

04

Watch the trend. Pay per pound.

Text a weigh-in any time — the coach tracks your trajectory and sends a weekly report with your trend and the one thing to tighten next. You only pay $10 per pound — when the weight is actually gone.

N

NanoRhino

WhatsApp

today

172.2 this morning

Logged ✓ 172.2 lb — that's 3.8 lb down from your 176 start, ahead of your 1 lb/week pace. Your weekly report is ready: protein averaged 128g, one tweak inside. 💪

What it does

From your first number
to every meal after.

your coach, on call

Message a meal. See your protein for the day in seconds.

No logging chores, no barcodes. Message what you ate — a meal photo works, even a shot of the nutrition label — and get back calories, protein, and what to eat next to hit your target.

Meal photo sent to NanoRhino: chicken sandwich on wax paper

📝 Dinner logged!

Chick-fil-A original — 440 cal · 28P / 40C / 19F

🔥 1,592 / 1,650 Cal96%

Protein still 12g short — grab a Greek yogurt or a scoop of whey before bed?

make me a 7-day meal plan
Done! 1,650 cal/day, balanced. Burger night Friday 🍔, batch-prep on Wed. View →

Plans on demand. Built around you.

Ask for a 7-day meal plan. Adjust on the fly. We design around your goal, schedule, and favorite foods — and adapt as you go. Vegetarian, keto, intermittent fasting, GLP-1-friendly, family-meal-friendly — we adjust the inputs, not your life.

Every calorie, traceable.

Your TDEE split into resting burn, daily movement, workouts, and digestion — no activity-bucket guesswork, every number tied to a published formula.

Adjusts as life shifts.

Targets and meal ideas update when your weight, training, schedule, or GLP-1 dose change. The plan keeps up with your week.

Built for your situation.

Vegetarian, keto, intermittent fasting, GLP-1, family meals, allergies — tell the coach once and it works around the food you actually eat.

Math you can trust.

Calories, macros, and your weekly pace are computed — not guessed at like a general chatbot. The numbers stay honest, week to week.

Corrections in plain English.

“No, they were grilled.” That's it — the log updates itself and the day re-totals. No menus, no editing forms.

Weigh-ins become trends.

Text a weight and the coach knows your four-week trajectory. Weekly reports show your trend, your averages, and the one thing to tighten next.

It remembers you.

Allergies, favorite foods, your no-dinner schedule, the sweetener you keep misnaming — say it once and it sticks. Every chat picks up where you left off.

Weighing your options? See how NanoRhino compares to MyFitnessPal, Cal AI, and other apps.

Results-based pricing

We get paid when you do.

Most weight-loss apps charge a subscription whether you lose weight or not. We're on your side of the scale: no bill until the weight is actually off — and you've kept it off for two weeks.

Free until the scale moves.

$10 per pound after that — capped at $500.

Calculate your free TDEE

Already know your number? message your coach · iOS app

No monthly fees.

Nothing upfront. Unlike subscriptions, we only get paid when the scale moves.

Pay after results.

We don't bill until the weight is actually off — and you've kept it off for two weeks.

The same pound never bills twice.

We bill only when you go below your lowest confirmed weight. If some comes back, re-losing it is free — you already paid for it once.

Capped at $500.

Even if you lose 80 lb, your total is capped at $500. Lose more, pay nothing more.

Messaging NanoRhino is free for up to 50 messages per day. On SMS, standard carrier message and data rates may apply. Reply STOP to unsubscribe; reply HELP for assistance.

Questions

Things people often ask.

What is NanoRhino?
NanoRhino is an AI weight loss coach you message. 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 right in your messaging app — answering questions, logging meals you send or photograph, and adjusting as you go. No app required. You only pay $10 per pound you actually lose.
What's the TDEE calculator, and is it really free?
Yes — the TDEE calculator at nanorhino.com/tdee is completely free, with no account or signup. An AI asks about your day in about 5 minutes and returns your TDEE (Total Daily Energy Expenditure — the calories you actually burn) broken down into resting burn, daily movement, workouts, and digestion, with every number traceable to a published formula. Most calculators collapse all of that into a single activity dropdown that can be off by 300–500 calories a day; ours doesn't. You keep your result whether or not you ever message the coach.
How do I get started?
Start with the free TDEE calculator at nanorhino.com/tdee — a 5-minute AI interview (no app, no account) that gives you the calories you actually burn, plus a starter plan. From there you can message your coach to put the plan to work: WhatsApp is the easiest way in, and it also works over SMS in the US. Already know your numbers? Head to nanorhino.com/message and pick WhatsApp to jump straight in.
Do I need to download an app?
No. NanoRhino lives in your messaging app — WhatsApp is the easiest way in, and it also works over SMS. We also offer an optional iOS app for users who prefer it, but it's not required.
I'm on a GLP-1 (Ozempic, Mounjaro, Wegovy, Zepbound) — does NanoRhino fit?
Yes. About 20% of our active users are on a GLP-1. NanoRhino is built to complement the medication, not duplicate it: the coach focuses on hitting protein (so you protect muscle on a suppressed appetite), staying hydrated, and adjusting calories as your weight comes down through dose changes. We don't medicate, prescribe, or give medical advice — your doctor stays in charge of dosing. We just help you eat well within whatever appetite you have on any given day.
I'm at my goal weight — can NanoRhino help with recomp or maintenance?
Yes. The coach can run a recomp plan (losing fat while building muscle through a small deficit + protein + resistance training), a strict maintenance plan, or a lean-gain plan. Just tell us what you're after when you start; the meal plans, protein targets, and weekly check-ins adapt. Pricing only applies if your goal is weight loss — recomp and maintenance clients don't pay the per-pound fee.
How does pay-for-results pricing work?
NanoRhino charges $10 per pound you lose, capped at $500 total — and that's the entire model. Three rules protect you. One: you only pay for confirmed loss — a pound counts once it's off and has stayed off for two weeks, so water-weight swings never trigger a bill. Two: the same pound is never billed twice — we bill against your lowest confirmed weight, so if some weight comes back and you lose it again, the re-loss is free. Three: no progress, no charge — plateaus cost nothing, and there's no subscription running in the background. If you don't lose weight, you never pay a cent. Billing questions anytime: support@nanorhino.com.
What if I regain some weight — do I ever pay for the same pounds twice?
Never. We track your lowest confirmed weight, and only pounds below it are ever billed. Say you start at 200 lb and reach 190: that's 10 pounds, $100, and 190 becomes your billing floor. If you bounce to 195 and work back down to 190, those 5 pounds are free — you already paid for them once. Nothing new is billed until you go below 190. This is deliberate: much of the weight-loss industry makes its money from the regain-and-restart cycle. We only earn on new progress — it keeps us on your side of the scale, not across from it.
Is NanoRhino a free AI weight loss coach?
Messaging NanoRhino is free for up to 50 messages per day, and you only pay if you actually lose weight — $10 per pound. 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.
Is there a message limit? What does it cost?
Messaging NanoRhino is free for up to 50 messages per day. On SMS, 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.
Is NanoRhino private and secure?
Yes. NanoRhino is a private, judgment-free space — your conversations live in your messaging 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: send a meal photo in chat 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 (send or photo a plate in chat), 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.
I've tried calorie counting before and it didn't work. Why would this?
Because the coach is what was missing, not the math. Most apps hand you a number and walk away — when you stall, when life gets in the way, when you don't know what to eat, you're on your own. NanoRhino handles the daily questions: what to eat that hits your protein, why the scale moved or didn't this week, how to handle a wedding or a hard week. The calorie math is automatic; the coaching is the product.
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.
Where is Link Heart Limited located?
Link Heart Limited is headquartered in Houston, Texas, United States.

Begin

Get your number.
Then get coached.

The 5-minute TDEE interview is free and needs no account. You'll walk away with your real maintenance calories — and a plan to act on.

Calculate your free TDEE

Already know your number? Message your coach on WhatsApp.

No commitment. No subscription. No app to install.