When you ate dinner late, you had a bad night more often
ExampleWorth keeping an eye onYou had a bad night after 6 of your 9 late dinners, but after only 2 of your 11 earlier dinners.
Is it the coffee? The late dinners? Let's find out together.
Tumlii is a simple diary for your tummy. Note down what you eat, how you slept and how your tummy felt. Over time, Tumlii looks back over your days and shows you what your bad tummy days have in common.
How Tumlii helps
It only takes a few taps a day. Tumlii does the rest.
LaksaDinner at 9:40 pm
Burning throat2:10 am, in bed
BreakfastForgot to note it down: left blank
1. Note it down
Tap to note a meal, or how your tummy feels, even in the middle of the night. Forgot something? That's fine. Tumlii never fills it in for you.
9late dinners
11earlier dinners
Fair comparisonsEvenings compared with evenings
2. Tumlii compares your days
It puts days when you did something, like eating late, next to days when you didn't. Then it counts how your tummy was on each.
Late dinners often come before a bad night6 of 9, against 2 of 11
CoffeeToo early to tell
3. You see what stands out
Tumlii shows you what your bad tummy days seem to have in common. If it can't tell yet, it simply says so.
See it on your phone
Real screens from the app, with example data. Here's what each part can do for you.
Note it down in seconds
Right after a meal, or at 2 in the morning: tap what you ate and how your tummy feels. Pick from everyday dishes, or type your own and Tumlii remembers it for next time.
A few taps, even on a rough night
See what your rough days have in common
Tumlii puts your days side by side and counts. It shows the few things that stand out for you, with the numbers behind each one, so you can decide what's worth trying. If it can't tell yet, it says so.
Your hunches, checked against your own days
Remember what your good days look like
Calm days count too. Every few weeks Tumlii gathers your calm days and shows what you ate, how you slept and how you felt on them, next to your harder days. Your month sits on one page.
More of what your calm days had
Ideas for what to eat
Meal ideas start with what has gone well for you, and always respect your allergies and food rules. Checked a dish yourself? Your say comes first.
Fewer guesses at mealtimes
A calm corner for tense moments
Short guided breathing and self-massage you can follow along with, one step at a time. Afterwards, Tumlii can show whether your calmer days came with them.
A breather when stress builds up
Honest and careful
Tumlii only tells you what your own notes show. It never guesses.
Patterns, not answers
Tumlii says things like "these often go together". It never tells you what is wrong, and never calls a food good or bad.
Blank days stay blank
If you didn't note a day down, Tumlii doesn't count it as a good day.
You can see the numbers
Each result shows how many days it is based on, so you can decide for yourself.
Be first to try Tumlii
Sign up for early access now. When the early release opens, we'll email you a link to download Tumlii, and you'll set your password in the app.
- Note a meal or how you feel in a few taps
- See what your bad tummy days have in common
Android December 2026
iPhone January 2027
Good questions
Is Tumlii a medical app?
No. Tumlii is a diary. It helps you spot patterns in your own days. It does not diagnose illness, and it does not replace your doctor.
How long before it shows me something?
It depends on how often you note things down. If Tumlii doesn't have enough days yet, it tells you, instead of guessing.
When can I start?
The early release comes to Android phones in December 2026 and to iPhone in January 2027. Leave your email at the top of this page, and we'll send you one email when it's ready for your phone.