LenzLog
ENDE
Try free

Snap your meal.
Your coach does the counting.

LenzLog is a nutrition diary for iPhone and Android. Take a photo or type what you ate – the AI coach estimates calories, macros and micronutrients, logs it for you and tells you what your day still needs.

Start 14-day free trial How to install

14 days freeCancel anytimeNo ads

Photo or textLog a meal in seconds
0–1000Daily health score
30+ nutrientsMacros, vitamins, minerals
iPhone · AndroidInstalls from the browser
Features

Everything your plate has to say.

From the first photo to your weekly trends – built to be fast in the moment and honest over time.

AI coach

Show it your plate. It does the rest.

Send a photo, a quick note or both. The coach – built on Claude from Anthropic – recognises the dish, estimates portions, calories, macros and micronutrients and logs the meal. Ask follow-up questions like you would a nutritionist.

  • Photo or text – “2 eggs, toast, a latte” works just as well
  • Logged for you – every entry stays editable
  • Knows your day – suggestions based on what's still missing
Calorie ring

A budget that moves with you.

The ring shows what you've eaten against today's budget. Active calories from Apple Health (via an iOS Shortcut) are added on top – and once there's enough weight data, the budget can follow your measured energy use instead of a guess.

  • One glance – eaten, left, over
  • Weight trend with measured energy use
  • Macros in their own colours: protein, carbs, fat, fiber
Health score

One number for how well you ate.

Every day gets a health score from 0 to 1000 – shown as a simple equation: the average of your meals, plus or minus protein, fiber, sodium, your kcal goal, supplements and movement. You always see why.

  • Transparent – every plus and minus explained
  • Live during the day, final in the evening
  • Nutrients card – pin the micronutrients you care about
History & stats

See your weeks, not just your day.

The history turns every day into a tile: blue under, green on goal, red over – brighter means healthier. Statistics show trends for calories, macros, nutrients and your health score.

  • Tile heatmap – patterns jump out
  • Search through every entry
  • Cheat day – one per month, marked and fair
And much more

The details that keep you going.

Supplements & medication

Tick them off – push reminders at the time you usually take them.

Doctor's report (PDF)

Two to three pages for your appointment: weight, blood pressure, lab values, nutrition, supplements and training.

Weight trend

Smoothed trend, pace per week, target date – and your measured energy use.

Cycle tracking

Put weight, hunger, iron and training into context of your cycle. Not a contraceptive.

Optional

Share meals with friends

Shared a pizza? Send your friend their part – they accept it with one tap.

Fitness

Log strength and cardio workouts – sets, weights, distance, heart rate.

Cheat day

One planned day off per month that doesn't wreck your stats.

Guided tour

Step-by-step help on every screen – made for people who don't love tech.

Your data, exportable

JSON backup and CSV export whenever you want.

How it works

Three steps. About ten seconds.

STEP 1

Snap or type

Take a photo of your meal or describe it in a few words.

STEP 2

The coach logs it

Calories, macros, micronutrients and a health score – estimated and saved.

STEP 3

See your day

Ring, health score and nutrients update instantly. Adjust anything with a tap.

Privacy

Your diary is personal. We treat it that way.

What you eat, weigh and measure says a lot about you. So we keep things simple and transparent.

This is a short overview, not a legal statement. The privacy policy is what counts.

Hosted in Germany

Your diary lives on our own server at Hetzner in Germany (EU).

AI by Anthropic

Photos and messages you send to the coach are processed by Anthropic (Claude) to answer you.

No ads, no data sales

LenzLog is paid for by subscriptions – not by selling or renting out your data.

No trackers on this site

This website uses no analytics, no tracking cookies and no third-party fonts.

Pricing

One plan. Everything in it.

Try LenzLog Pro free for 14 days. Then $7.99 a month or $69.99 a year.

LenzLog Pro

14 days free
$69.99/ year

$5.83 a month, billed yearly · save 27 %

$7.99/ month

Billed monthly · or $69.99 a year

  • AI coach with Claude's more capable model – about 30 messages a day, then 20 more with the light model
  • Photo recognition: calories, macros, micronutrients
  • Daily health score with the full equation
  • Calorie ring with Apple Health activity & measured energy use
  • History heatmap, statistics, weight trend
  • Supplement & medication reminders (push)
  • Doctor's report as PDF
  • Cycle tracking, sharing meals, fitness log
Start 14-day free trial

Cancel anytime. Prices include tax and are shown in USD – your local currency appears at checkout.

Free

After the trial, LenzLog stays free – including a smaller daily coach allowance. Nothing gets deleted.

  • Manual tracking of meals, weight and more
  • All your data – viewable and exportable
  • History, statistics and health score
  • AI coach with the light Claude model – 8 messages a day, photos included
  • The more capable model and more messages

Payment happens inside the app via Paddle:

Visa · MastercardPayPalApple PayGoogle Pay

All pricing details →

FAQ

Questions, answered.

Which phones does LenzLog work on?

On iPhone (iOS 16.4 or later recommended, for push notifications) and on Android with Chrome. It also runs in any modern desktop browser.

Why isn't it in the App Store?

LenzLog is an installable web app (PWA). You add it to your home screen straight from the browser – it then opens full-screen like any other app and is always up to date. Here’s how.

How accurate are the AI estimates?

They are estimates – usually close for typical dishes, less precise for hidden oil, sauces or unusual portions. Adding a short note (“large portion, no dressing”) helps, and every entry can be corrected.

Is this medical advice?

No. LenzLog is a diary and coaching tool, not a medical device. For health decisions, talk to your doctor – the PDF report is there to make that conversation easier.

What happens after the free trial?

LenzLog stays free: manual tracking, all your data and the coach with the light Claude model (8 messages a day, photos included). Pro adds the more capable model and many more messages.

How do I cancel?

Anytime, in the app or through the link in your Paddle receipt. Your subscription then simply doesn't renew.

Where is my data stored?

On our own server at Hetzner in Germany. Content you send to the coach is processed by Anthropic to generate answers. Details are in the privacy policy.

Does it work with Apple Health?

On iPhone, an Apple Shortcut can send your active calories and steps from Apple Health to LenzLog – they’re added to your daily budget.

Which languages are available?

The app is available in English and German.

Start with today’s lunch.

14 days of LenzLog Pro, free. Install it on your phone in under a minute.

Start 14-day free trial How to install