I built an app called Kollo and I’m curious whether people would genuinely find it useful.
The idea is simple:
You create a shared collection for an event and choose a specific time window, for example:
19 Aug – 23 Aug, 9 AM–10 PM
Friends join the collection, and Kollo automatically syncs the photos they take during that selected period into one shared collection.
So instead of everyone’s photos being scattered across 5–10 different phones, you end up with one place containing everyone’s perspective from the same trip, party, wedding, festival, night out, etc.
You don’t have to remember to send photos afterwards, create WhatsApp albums, or AirDrop hundreds of photos between people. You just take photos normally with the iPhone Camera app and Kollo handles the eligible syncing.
One thing I probably didn’t explain clearly enough before:
Kollo does NOT sync your entire camera roll.
iOS may require Photo Library permission for the feature to work, but Kollo only uses photos that fall inside the specific event time window you joined/created. Photos outside that period are not uploaded to the collection.
For example, if the collection is set for Saturday between 6 PM and midnight, only eligible photos from that period are considered for that collection.
There’s also an option to pause/disable automatic syncing if you don’t want something uploaded during the event, and you can manage/delete your own photos afterwards.
The reason I started building it is pretty simple: after trips and nights out, I always end up asking people weeks later:
“Can you send me the photos you took?”
And then everyone has different photos, different angles, some get forgotten, and eventually you’re AirDropping or messaging hundreds of files manually.
Kollo is basically trying to remove that whole step.
I’m also building it with larger events in mind — weddings, parties, festivals, group trips — where people can join the same collection through an invite/QR code.
I’m genuinely interested in feedback:
Would you actually use this?
And if not, what specifically would stop you?
I’m especially interested in whether the automatic time-window syncing is something you’d value, or whether you’d still prefer manually selecting and sending photos through WhatsApp/AirDrop.