Daypatch Turns iPhone Photos Into Stickers and Pins Them to Calendar Dates

There are many photos I like in my phone's album, but most of the time, after taking them, I rarely go back to them.

Sometimes it's a puppy I photographed on a Tuesday, sometimes an outfit I felt great about on a Friday, or just a plant that grew a new leaf on a Sunday. They may not be worth a dedicated social post, but they are enough to make that day feel different.

I wanted a place that could keep these small things on their dates. So recently, using my spare time after work, I made Daypatch: a sticker calendar for the iPhone. Pick a few photos, turn the subject into a sticker, and place it on the corresponding date. Open the calendar, and you can see the small things that happened this month.

What should stay in the calendar?

What I want most when opening a month is to see photos first, not a string of text. Dates with content now show a sticker; when the same day stores multiple photos, they stack and show a count. Dates without content still look like ordinary calendar numbers.

Here is the current actual interface. October 23 has three photos, so the date shows a sticker and a count marker.

Tap a day to page through each record for that day, or choose one as the cover on the calendar. The calendar does not need to cram everything into one cell, but when you tap in, the complete day should still be there.

From photo to sticker

I wanted import to be as light as possible: select photos, confirm the date, and let the phone handle it. Now multiple photos can be selected at once, and the date can be checked one by one before importing. If a photo has already been stored, the app clearly warns you, so you don't unknowingly keep an extra copy.

After processing, photos become stickers with white borders. For now, effects such as Original, Outline, Comic, and 3D can be switched between. If a photo fails to generate a sticker smoothly, the original record is still kept, and you can try again later.

These are still development interfaces, but from selecting photos to looking back at a day, the core experience now connects.

Why build it as an offline app first

This idea was personal from the start: the photos come from my own album, and the calendar is for my own review. So I kept the scope very small: iPhone only, only the photos the user selects, no account needed, and no automatic cloud sync. Sticker generation uses the device's local capabilities; the original photos in the album will not be changed by editing or deleting calendar records.

This also means I need to handle local data carefully. Sticker sharing, month calendar image export, and local backup and restore are already implemented, but these features still need full validation on real devices, especially the experience of interruption, cancellation, and recovery.

Where it is now, and what comes next

Daypatch is still being developed and is not a released product. The main flows in the simulator are working. Next, what I most want to complete is reliability during real use:

• Test subject extraction with different kinds of photos on a real device, including people, pets, plants, and outfits;
• Check speed and memory behavior when there are many photos, and stability after consecutive imports;
• Walk through large type, VoiceOver reading, narrow screens, and gesture operations more carefully;
• Fully verify sharing, backup, and restore, and add a privacy notice, support page, and more realistic demo material.

Further out, I also want to explore whether saved stickers can be freely arranged into a phone wallpaper. That idea is still in the research phase; getting the sticker calendar itself right matters more first.

I made Daypatch because I wanted a place for photos that don't need to be 'posted' but are worth remembering. If it were you, what would you stick into the calendar? I'd also like to hear which step you'd most want to improve after seeing these interfaces.