An AI health coach built for family

Live120 wasn't built to chase downloads. I built it for my 61-year-old dad, and for myself.

When Dad was 60 his blood sugar spiked and the doctor told him to control his diet. He tried MyFitnessPal and downloaded a pile of other apps, and gave up on all of them within three days — too complicated, no Chinese foods, and nobody telling him whether what he was eating was good for his blood sugar.

So I wrote Live120. Take a photo, large text, and an AI that explains things in words he understands.

Why "Live to 120"

Taiwan is the dialysis capital of the world — its dialysis prevalence has long ranked among the highest in the world.High blood pressure, blood sugar and cholesterol, and many chronic conditions, are linked to diet and lifestyle.

The dangerous part isn't eating badly — it's believing you eat well. Fat intake is the most commonly missed one: the vegetables are blanched, the rice portion is small, but the invisible oil goes over the limit every single day.

At 29 I thought I was healthy too. The blood test I took just before my 30th birthday woke me up: insulin resistance 3.22, metabolically abnormal.

Your feelings will lie to you. A blood test won't.

Then something clicked: health works exactly like saving money. Record it and you can look back; look back and you can see what's wrong; see what's wrong and you can fix it. Health management without records is like managing money without a budget — all instinct, and nothing to show for it.

Live120 is more than an app. I want every family to keep an honest record of what they eat and build habits that hold. I hope more families start by keeping a clear record of every meal, and look after their health from there — that's why I'm doing this.

Eat well. Live to 120.

I was Live120's first user

Honestly, a year ago I didn't know what BMR or TDEE meant. Basal metabolism, activity burn, calorie deficit — it was all alien vocabulary. All I knew was the number on the scale, and every month I stared at it anxiously: why is this so slow? Is my metabolism broken?

I tried eating whatever, then starving, then training fasted — and either collapsed halfway through a session or watched the scale refuse to move while my confidence drained away. The apps out there coldly told me "you went over today" and never why, or what to do about it.

So I started learning. BMR is only what you burn lying still; TDEE is the real total. Muscle and water make weight lie to you. Eating too little drags your metabolism down and parks you on a plateau. Most importantly: every app on the market estimates TDEE from a formula, and formulas disagree with real bodies. So I built a real TDEE engine into Live120 — instead of guessing, it uses what you actually ate and how your weight actually moved, and lets your body calculate its own burn.

Over these six months I changed how I eat and train, went back for regular blood tests, and logged every meal and every workout in Live120. What changed for me: about 6 kg less body fat; insulin resistance (HOMA-IR) from 3.22 to 1.3. This is my own experience and does not mean everyone will see the same result; the app is a tool for records and reference and cannot replace a doctor's diagnosis and treatment.

For me the biggest difference was being able to read my own data. I built this app for my dad, and I use it every day myself. That is Live120 — not just counting calories, but helping you understand what you ate.

My six months of blood work (Jan → Jul 2026, personal data, for reference only)

Metabolic core

Marker	Reference	Jan	Jul
Insulin resistance (HOMA-IR)	<1.4	3.22	1.3
Fasting insulin	3–25	14.2	5.8
Fasting glucose	70–100	94	91
HbA1c	4–6	5.5	5.2

Lipids

Marker	Reference	Jan	Jul
Total cholesterol	<200	210	175
Triglycerides	<150	94	81
HDL	>40	34	35
LDL	<130	156	131

Kidney, liver and other

Marker	Reference	Jan	Jul
Creatinine	0.7–1.3	0.8	0.86
eGFR	>90	121	111
ALT	<52	34	46
Uric acid	4.4–7.6	6.8	5.9

These are my personal test results, not evidence of the app’s effects. Please ask a doctor to interpret test results.

* One person's experience, not medical advice; results vary. This app cannot diagnose, treat or prevent any disease. If you have a medical condition or take medication, consult your doctor first.

My 61-year-old dad can actually use it

At 60 his blood sugar spiked and the doctor told him to fix his diet. He wasn't unwilling — the apps were simply out of reach: tiny buttons, English everywhere, missing foods, five nested dropdowns per meal. He quit on day three.

So I added three things for him: a senior mode with large text and large buttons, a daily medication check-in reminder, and photo logging that finishes a meal in one shot. Now he weighs himself each morning, photographs breakfast and taps the medication check-in, then one photo at lunch and one at dinner. The whole thing takes under 30 seconds.

Three months later he is still logging every day, on his own. As he puts it: "I used to take pills because the doctor made me. Now I can read the numbers myself, so I know one bowl of rice less actually matters."

Two generations logging their own numbers in Live120 — one aged 30, one aged 61. That's what I want to bring to more families.

※ One person's experience, not medical advice; results vary. This app cannot diagnose, treat or prevent any disease. If you have a medical condition or take medication, consult your doctor first.