Habit Tracker for a Single Habit

Date	Day	Status	Chain
Mon, Jun 16	Day 17	done, red	17 days
Tue, Jun 17	Day 18	done, red	18 days
Wed, Jun 18	Day 19	done, red	19 days
Thu, Jun 19	Day 20	done, red	20 days

Why only one habit

More exercise, healthier eating, getting up earlier, less phone time, all at once. That sounds ambitious and almost always goes wrong. Every new habit takes attention and willpower at the start, and spread across ten things, there is not enough for any of them.

Most habit trackers still want you to set up ten goals right away, collect points and unlock badges. After a few days, checking things off feels like a second to-do list, and the app gets deleted.

Single-Habit does the opposite: one habit, one tap a day, one chain. The principle is called "Don't break the chain." The longer the red row gets, the less you want to break it. Once the first habit has stuck, it hardly takes any effort, and your mind is free for the next one.

How to keep going

A few things make it easier:

Link the habit to something you do every day anyway, such as brushing your teeth or your first coffee.
Start small. Two minutes every day achieve more than an hour you skip three times.
A missed day is normal. What matters is not to skip two days in a row.
Look at the chain of the last few weeks when you do not feel like it. With eighteen red days in a row, you are more likely to get up once more.

The year calendar shows at a glance where you skipped. Often it is the same stressful week, and next time you know what to watch out for.

Wall calendar or app?

"Don't break the chain" also works with a wall calendar and a red pen. That costs nothing. But the calendar hangs at home, and you work out the statistics yourself.

You have the app with you. It counts the chain and shows you the whole year on one screen.

Merkmal	Paper template	App
Cost	none	free with ads, PDF as a one-time purchase
Checking off	an X with a pen	one tap
Chain	count it yourself	the app counts it
Rate	calculate it yourself	statistics
With you	hangs on the wall	on your phone

What the app costs

no subscriptionbuy once

You track your habit without limits, with year calendar and statistics. The free version shows ads. A one-time purchase in the Play Store removes the ads and unlocks the PDF export of your history. There is no subscription.

Common questions about the habit tracker

Why can I only set up one habit?

A new habit forms when you repeat one thing every day, not through ten resolutions at the same time. The app keeps you on exactly that one, without the distraction of long lists.

What is the red chain?

Every day on which you did your habit turns red. Consecutive red days form the chain. It is meant to motivate you not to break the row.

Can I export my history?

Yes, with the one-time purchase. The PDF contains your history.

Does the app work without internet?

Yes. Days, chains and statistics stay on your device. You do not need an account.

This app is made by ReiVi, the app label of Viktor Reinik from Freilassing, Germany. Every ReiVi app does exactly one job and works without an account. Who is behind ReiVi (in German)

View on Google Play

Single-Habit is a simple tool for keeping track of a habit and does not replace medical or therapeutic support. Updated on October 26, 2026.

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Habit tracker for exactly one habit

How the app works

Choose one habit

Tap every day

Look at the calendar and statistics