
Trend weight and an arrival date
Set a goal weight and see roughly when you’ll get there at your current pace. Weights from a smart scale can be imported from Health, one per day.
CalLog is a calorie tracker built around Japanese food — home cooking, convenience stores and eating out. Snap it or pick it, and Karo-chan and eight more characters cheer on your streak every single day.
First log of the day! Here we go
Why it lasts
The number one reason people stop logging? The day they overeat, they don’t want to open the app. But that’s exactly the day the log matters most.
So Karo-chan reacts to the fact that you logged, not to how much you ate. Acknowledgement, not judgement — that’s her whole job.
A day with Karo-chan
Scroll through one day. Every line Karo-chan says here is shown in the app — translated from the original Japanese.
Morning! Let’s make today a good one
Plenty left7:48Breakfast
Foods you log often pop up as suggestions the moment you start typing. Pick one and the calories and protein fill themselves in.
First log of the day! Here we go
12:31Lunch
CalLog splits it into items and works out calories and macros for each. You can adjust the numbers afterwards.
You’re logging regularly today!
15:20Snack
Even when you’re running low, the ring stays a calm teal. Honest numbers, gentle words.
You logged it — well done!
20:06Dinner
In most apps, this is where the red numbers and warnings come out. Karo-chan isn’t looking at the amount — she’s looking at the fact that you still logged today.
Logging the days you go over is what makes it stick
3days later
No broken-streak guilt trip. She’s just glad you came back.
Welcome back! Don’t worry about the days you missed
Characters v1.17
Karo-chan has eight friends. The one you choose appears on the log screen, in widgets and on your friends’ screens. Turn on “Character voice” in Settings and they’ll say a few words out loud when you log.
Karo-chanFree
Cheerful and honest — the cheerleader who’s always closest.
How to unlockWith you from the start.
Voices are made with the speech synthesis software AivisSpeech (AivisSpeech: まお / Lux / にせ / まい / 花音 / らせつん / 中2 / M2 / M1). Fi-kun’s and Chrom’s voices are provided under CC BY-SA 4.0 (voice files and credits).
Your plan
During setup, CalLog builds “your plan”. Try it here first — the maths is exactly the same as in the app.
How it’s calculated: basal metabolic rate from the Mifflin-St Jeor equation, multiplied by an activity factor for your estimated daily burn, minus your chosen pace assuming 1 kg of body fat ≈ 7,200 kcal (minimum 1,200 kcal). Protein is body weight × 1.0 g, fat 25%, carbohydrate the remainder. These are estimates and do not replace medical advice. Nothing you enter leaves this page.
Six ways to log
Barcode when you’re in a hurry, quick entry when you forgot to take a photo. Having a choice is what makes it stick.
Built for Japanese food
Well done!
Nice logging!
Let’s do this together
Good work today
Friends
Send an invite link and you’re connected. Friends’ logs show up in “Today”, and you can send each other character stamps — “Amazing!”, “Nice!”.
Friends is completely free
Know your body
Body weight swings by around a kilo a day with water and food. CalLog smooths that into a “trend weight” with a weekly pace, and tells you roughly when you’ll reach your goal.
At this pace, around Dec 13
you’ll reach 53.0 kg

Set a goal weight and see roughly when you’ll get there at your current pace. Weights from a smart scale can be imported from Health, one per day.

A formula gives you the average for your build. CalLog works backwards from your own food and weight logs to estimate what your body really uses each day. A provisional estimate is shown free from day one.

As you lose weight, your body burns a little less. CalLog suggests a weekly adjustment to keep your target in step.
And more
Pricing
10 photo scans and 10 text or voice calculations, barcode scanning and Friends are all free. When you want more, every CalLog Pro plan comes with a 3-day free trial.
¥350/ month
Try it out
¥1,680/ 6 mo
¥280 per month
¥2,400/ year
¥200 per month
Here’s exactly what happens, and when.
Privacy & care
0
Accounts to createNo email, no name. Install it and start logging.iCloud
Where your data livesMeals, weight and photos stay on your iPhone and in your own iCloud, so they survive a new phone. Nothing is kept on our server, except a daily summary if you use Friends.17updates
Since launchImproving steadily since August 2026. Every message sent through “Send feedback” in the app is read by the developer.24hours
Report responseRun into trouble in Friends? Report it in the app — reports are reviewed within 24 hours.FAQ
Not yet — the app’s interface is in Japanese, and the food database covers food sold in Japan. It works best if you read some Japanese and eat in Japan.
Yes. Photo scan and text or voice calculation (10 each), quick entry with suggestions, database search, daily totals for calories and PFC, barcode scanning, Friends, trend weight and arrival date, the provisional daily-burn estimate, health score, widgets, reminders, streaks and medals, Karo-chan and character voices are all free. You can save 2 My Meals and see the last 7 days of reports and weight.
Every plan (monthly, 6-month and 12-month) includes a 3-day free trial for first-time CalLog Pro users. Cancel at least 24 hours before the end and you won’t be charged — from Settings → your name → Subscriptions.
Karo-chan is with you from the start. Soy-kun, Tetsu-kun and Ami-chan come with CalLog Pro. Tanpa-kun joins when you invite 3 friends, even on the free plan. Oli-chan (hit your target 7 days in a row), Fi-kun (45 days logged in total), Chrom (log your weight 14 days in a row) and Selen (health score 80+ for 7 days in a row) can be used with CalLog Pro once you meet the goal. Any of these five can also be unlocked right away for ¥250 each, a one-time purchase.
Your nickname and a summary of today (whether you logged, number of entries, calories vs target, streak, and meal names). If you turn on “Share the past 7 days” in the Friends settings, friends can also see your meals from the past 7 days. Meal names can be hidden in settings. Weight and photos are never sent. You can unfriend, block and report, and “Stop using Friends” deletes your data from the server.
No. Meals, weight and photos are stored on your iPhone and in your own iCloud, so they come back after a phone change or reinstall with the same Apple ID. Some features, such as calculating from a photo or text, send that content via our server for the estimate, but it is not stored. Height, age and sex are never sent.
Yes. CalLog reads steps, active energy and weight. You can add exercise to your daily target, and import one weight a day (days you entered in CalLog are never overwritten). It never writes to Health.
Not at the moment — iPhone only (iOS 17 or later).