Lastmark: When Did I Last? · iPhone app · Apple Watch support included

Know when you last did it.

Name: Lastmark: When Did I Last?
Author: NovoBuild

A calm, private iPhone app for remembering haircuts, filters, oil changes, checkups, and the occasional things that do not belong on a daily to-do list.

Create an item, tap Done now when it happens, and Lastmark will tell you exactly how long it has been — without streaks, scores, or judgment.

Download on the App Store See how it works

Lastmark iPhone home screen showing occasional tasks and elapsed time.

No account
No ads or tracking SDKs
No subscription
Built for Apple platforms

The three-second loop

Log it now. Remember it later.

Create what matters

Add anything whose timing is easy to forget, from a haircut to a furnace filter.

Tap Done now

Lastmark records the date and time. An immediate Undo catches accidental taps.

See the elapsed time

Come back later and see the answer at a glance.

Lastmark New Lastmark editor on iPhone with name, note, date, and optional reminder fields — Create a Lastmark for anything worth remembering.

Lastmark iPhone screen showing a list of recently completed items with Done now buttons — Tap Done when it happens.

Lastmark item detail on iPhone showing elapsed time, reminder settings, and completion history — See how long it has been at a glance.

Not everything needs a streak.

Some things matter precisely because they happen occasionally. Lastmark keeps a clear history and gives you the answer without goals, badges, red days, or guilt.

Not another to-do list: to-do apps ask what you need to do next. Lastmark answers when you last did something and how long it has been — without an inbox, deadlines, goals, or streaks. Tapping Done now is where the memory begins.

Haircut
Water filter
Oil change
Dental cleaning
Smoke alarm batteries
Pet medication
Appliance maintenance
Call the specialist

A reminder when you want one.

Choose a one-time follow-up or a reminder after every completion. Lastmark understands simple phrases such as “call in a week” or “every six weeks” on your device and lets you confirm the date before saving it.

Custom date and time.
Preset or custom snooze.
One optional gentle follow-up.
Notifications remain optional; the app works without them.
A reminder supports the history — it does not turn Lastmark into a task list.

Anywhere you need it

One tap away.

Widgets

Keep pinned items on the Home Screen or choose one item for the Lock Screen.

Siri & Shortcuts

Log an item or ask when it was last done.

Apple Watch

Mark something done from your wrist, even if the iPhone is temporarily unavailable.

Watch complication

Choose one item to keep visible on a watch face.

The detail is there when you need it.

Backdate a completion, add a note, correct a mistake, or see a neutral summary of your typical timing. Export a readable CSV or make a complete backup whenever you choose.

Private by default.

Lastmark does not require an account and does not include advertising or analytics SDKs. Your library is stored on your devices. Optional iCloud sync uses your private Apple account, and exports leave the app only when you choose to share them.

Read the privacy policy Accessibility