All your progress in one place. Build habits, set goals, write reflections and track what matters with a calm, focused daily system. Build momentum, one day at a time.
Koi: a calm habit tracker with goals, a journal and a koi pond you grow.
Koi is a calm, gentle habit tracker and self care app that helps you stay consistent without pressure. Build a daily routine, track your goals, keep a journal and work through your to-do lists, all in one flexible space. Koi focuses on progress, not perfection, so you can keep moving forward even when life gets busy.
What you can do with Koi
• Habit tracker: create daily habits and set reminders
• Goal tracker: set personal goals with milestones and track progress
• Journal: write reflections with photos and audio
• To-do lists: simple, structured and nested lists
• Mood tracker, plus water, food, exercise and more
• Custom trackers for anything you want to measure
• Focus timers and meditation with natural sounds
• Home screen widgets to check in at a glance
• Personalise your experience with beautiful themes
• View your progress over time
• Plan your day with everything organised in one place
Why Koi?
In Japanese culture, the koi fish (鯉) represents perseverance, strength, and transformation, swimming upstream against strong currents, one day at a time.
“Koi” (恋) also means love. Building habits is an act of self-care. Small, repeated actions are how real change happens.
Koi is designed around that idea.
Your Koi Pond
Your koi are your self care pets. Collect coins and feed them, and watch them grow from fry to elder as you build consistency. Each one a living reflection of your progress. Name them, care for them, and raise your collection one day at a time.
Designed to feel natural
Koi is built to be lightweight, distraction-free, and easy to return to, even after time away. Whether you’re starting a new routine or rebuilding one, Koi meets you where you are.
Who Koi is for
• Anyone building habits without pressure
• People who struggle with strict streaks
• Users who want simple structure, not complexity
• Those who prefer a calm, simple design
Build momentum. One day at a time.
Privacy & Terms
Your privacy matters.
• Privacy Policy: https://koi-calm.app/privacy
• Terms of Service: https://koi-calm.app/terms
Contact
If you have any questions or need support, feel free to reach out:
Email: koi.calm.app@gmail.com
I absolutely adore this app! It helps me to create habits and I personally log my to-do list as goals to help push me further.
Developer Response
Thank you very much for the review! Glad Koi is helping.
Surprisingly effective!
illya839
Surprisingly accessible with VoiceOver on the iPhone for the blind. There are a few things that can't be done with this screen reader, but it's still very playable. I enjoy the fact that it's not just a habit or goals tracker app, but that there is an additional satisfaction of collecting Koi and naming them.
Developer Response
Pleased Koi is helping!
:(
ma7is0n
was 5 stars before but now after the 1.17.10 update the app crashes after being open for a few seconds. please fix ❤️🩹 maybe it has something to do with Me being on an iphone 7. I don’t have a way to get a better phone right now. thankfully I have another broken phone though this app works 5 stars on and I left Y’all a 5 star review on google play. I hope to be able to update this review to be better soon. or delete it. I just wanted Y’all to know what was going on so it could hopefully get fixed. I love this app thank Y’all 🤍
We've polished the pond
- Your pond got a beautiful makeover, from the water to the sky.
- New decorations to make it yours.
- Need a break? Turn on Pause mode and your streak waits for you.
- Your pond now stays in step on every device you sign in to with your Koi ID.
Bug fixes to keep the water clear.
Version 1.28.0
The developer, DANIEL DESMOND MEDCALF, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
Identifiers
Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
Contact Info
User Content
Identifiers
Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Purchases
Location
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
DANIEL DESMOND MEDCALF
Size
171.3 MB
Category
Health & Fitness
Compatibility
Requires iOS 15.0 or later.
iPhone Requires iOS 15.0 or later.
iPad Requires iPadOS 15.0 or later.
iPod touch Requires iOS 15.0 or later.
Mac Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
