Log anything in your day with one tap.
Water, coffee, vitamins, the dog's walk, the baby's feeds. Make a button for it, tap it, and see your whole day on one timeline.
Try it: tap to log now · hold to log at the cursor
Your buttons. Your day.
Pick an emoji, a name and a color. Tap to log it now, or hold to log it at the moment under the timeline cursor.
- Drag the timeline with momentum, pinch to zoom in on an hour
- Switch to Week and Month views to spot patterns
- Add a note to any log, like "Tired but ok"
Keep Personal, Baby and Dog apart in workspaces. Shared ones show who logged what.
Buttons that remind you.
Add a simple rule and CoLog nudges you with a notification, but only when you haven't logged it yet.
- "Once before 13:00", "every 2h", "max 3, 3h apart"
- Limit any rule to certain weekdays
- Notifications run on your phone, no account needed
Private by default. Shared when you want.
Use CoLog as a guest and nothing leaves your phone. Sign in to sync your devices and share a workspace with anyone, on iPhone or Android.
- Start as a guest, sign in later to back up and sync
- Encrypted in transit and at rest. Ads never use what you log
- Delete your account and data from inside the app
What will you log?
If it happens more than once, it can be a button. Here's how people use CoLog.
Medication & vitamins
Stop wondering "did I take it?". Log pills and vitamins with one tap, get reminded only when you missed a dose, and see your week at a glance.
See howDrinking water
Track how much water you drink with one tap per glass, get nudged when it’s been too long, and see your daily total.
See howBaby feeding & sleep
Log feeds, naps and diapers with one tap, share them with your partner, and always know when the baby last ate and who fed them.
See howDog & pet care
"Did anyone feed the dog?" Log walks, meals and meds with one tap, share them with the family, and see who did what.
See howCoffee & caffeine
Set a daily coffee limit and a minimum gap between cups. CoLog warns you before the fourth espresso, not after.
See howMood & symptoms
Log moods, headaches or symptoms the moment they happen, with an optional note, and spot patterns across the week and month.
See howFree for two. Plans for more.
Free covers you and one other person. Plus and Family remove ads and add workspaces and people. Only the plan owner pays.
Free
No ads for 10 days, then a small banner
- 2 people: you and 1 invited person, who joins free
- 1 workspace
- Unlimited rules, reminders and history
- Sync across your devices
Plus
That's $2.50 a month. Save 37%
- Everything in Free
- 2 people
- 5 workspaces
- No ads in your workspaces
- Your invited person joins free
Family
That's $4.17 a month. Save 40%
- Everything in Free
- Up to 6 people
- 10 workspaces
- No ads in your workspaces
- Members join free
- 14 days free the first time you need more
Bought in the app through the App Store or Google Play. Renews automatically; cancel any time in your store subscription settings. Only the plan owner pays, and people they add join free. Prices are in USD, may vary by country, and may change.
Questions, answered.
Do I need an account?
No. Continue as a guest and everything stays on your phone. Sign in with Apple, Google or your email any time to back your logs up, use them on another device, and share a workspace.
Where is my data stored?
As a guest, only on your device. When you sign in, on CoLog's servers, encrypted in transit and at rest, so they sync to your other devices and to the people you share a workspace with. We never sell your logs or use them for ads. See the Privacy Policy.
How do reminders work?
Add a rule to any button, like "Vitamin once before 13:00" or "Water every 2h". CoLog schedules notifications on your phone and only reminds you when the log is actually missing.
Can I log something I forgot earlier?
Yes. Drag the timeline to the right moment and hold the button. It's logged at the cursor's time.
Can I share a workspace with someone?
Yes. Create a workspace, say "Baby", and send your partner an invite link. It works whether they use iPhone or Android, and Apple, Google or email to sign in. Every log shows who added it, so you both know when the last feed was. On Free, you can invite one person, and they join free. Family covers up to 6 people. The first time you need more, you can try Family free for 14 days, with no payment details.
What do the ads look like?
On Free, there are no ads for your first 10 days. After that, a small banner sits at the bottom of the screen. It never covers your log buttons. From day 31, once a month, CoLog asks you to help keep it free: tap to watch one short video, or upgrade. It never stands between a reminder and your log. When there's no ad to show, you see a CoLog note about Plus and Family instead. You can also watch a short video to unlock an extra, like a second workspace for 7 days. Ads never use the contents of your logs. Plus and Family owners never see ads, and people they invite see none in the plan's workspaces.
Who pays for Plus or Family?
Only the plan owner. The owner adds people to the plan, and they join free with their own account and see no ads in the plan's workspaces. A person can be on one paid plan at a time. Apple Family Sharing isn't used, because the plan's seats already cover your family.
How do I cancel a plan?
Plus and Family are store subscriptions. Cancel in your Apple ID subscriptions (iPhone) or in Google Play → Payments & subscriptions (Android). You keep the plan until the end of the period you paid for. On a new phone, use "Restore purchases" in the app.
How do I delete my data?
Go to Account → Delete account in the app. That permanently deletes your account, the workspaces you own (for everyone in them) and the CoLog data on your device. Guest data is removed when you uninstall the app. More options.
Start logging today.
Free on iPhone and Android. Your first button takes ten seconds.