When did you last water the plants, change the air filter, or call Mom? WhenWas remembers for you — tap once to check in, and always know how long it's been.
WhenWas is the simple "time since" tracker for all the little things that don't fit on a calendar. No due dates, no guilt, no streaks to break. Just a clean list of the things you care about and exactly how long it's been since you last did them.
NEW — SHARE ACTIVITIES WITH FAMILY & FRIENDS
Now you can track things together. Invite anyone to a shared activity — everyone sees the latest check-in and anyone can reset it, kept in sync in real time across all devices. Perfect for households: who fed the dog, when the litter box was cleaned, when the sheets were changed. No more "did you already do it?" texts.
PERFECT FOR TRACKING
• Home care — watering plants, changing filters, cleaning gutters
• Pets — flea treatment, grooming, vet visits, feeding
• Health — haircuts, dentist visits, contact lens changes, medication refills
• Relationships — calling parents, date nights, catching up with friends
• Car & maintenance — oil changes, tire rotation, battery swaps
• Anything else you keep asking yourself "when did I last...?"
HOW IT WORKS
1. Add an activity once
2. Tap to check in whenever you do it
3. See exactly how many days, weeks, or months it's been
Every check-in is saved to a timeline, so you can look back at your full history — with optional notes for context ("used the heavy-duty filter this time").
KEY FEATURES
• One-tap check-ins — resetting a timer takes a second
• Timeline history — every past check-in, at a glance
• Shared activities — track together with family and friends, synced live
• Siri & Shortcuts — "When did I last water the plants?" hands-free
• Apple Watch app — view and check in right from your wrist
• Home Screen widgets — see your timers without opening the app
• Reminders — get a gentle nudge when it's been too long
• Search & filter — find any activity instantly
• Dark mode — easy on the eyes, day or night
• Private by design — your data lives on your device and in your personal iCloud, never on our servers
FREE & PRO
WhenWas is free to use with up to 5 activities, timeline history, Siri, and the Apple Watch app. Upgrade to Pro to unlock:
• Unlimited activities
• Sharing with family and friends
• Custom reminders
• Pinned activities
• Home Screen widgets
• Notes on every check-in
• iCloud sync across all your devices
Life is full of things that need doing again — but not on a schedule. Download WhenWas and never wonder "when was the last time...?" again.
Straight forward UI helping you remember when you last did something.
So useful!
moprenger
I downloaded this app to help me remember lengths of time for certain events/activities. It’s such a useful reminder!
NEW: Share activities with family & friends — track things together, in real time.
SHARED ACTIVITIES
• Invite anyone via Messages — they tap the link and you're tracking together
• Everyone sees the latest check-in the moment it happens
• Anyone in the share can check in — who fed the dog is finally settled
• Prefer to keep control? Invite people as view-only so they can see the timer but not reset it
• Shared activities show a badge so you always know what's shared and with whom
• Stop sharing (or leave a share) anytime — your data stays yours
Sharing is part of WhenWas Pro and syncs privately through iCloud — your data never touches any servers (we don't even have a server).
ALSO IN THIS UPDATE
• Siri got more reliable — "When did I last water the plants?" now works more consistently
• Faster, smoother activity list
• Bug fixes and performance improvements
Version 2.0
The developer, Drew Cortright, 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 Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
VoiceOver
Larger Text
Dark Interface
Differentiate Without Color Alone
Sufficient Contrast
Information
Seller
Drew Cortright
Size
3.2 MB
Category
Productivity
Compatibility
Requires iOS 18.0 or later.
iPhone Requires iOS 18.0 or later.
iPad Requires iPadOS 18.0 or later.
Mac Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.