Why we chose to build Culr differently from every other cleaner app

The cleaner app problem nobody talks about

I'm not interested in tearing down other products. But there's a pattern in the cleaner app world that bothers me. Most of them do everything. Your camera roll, your files, your downloads, your cache, your browser history, your RAM, your battery, your "junk". They throw a hundred features at you and hope something sticks.

The problem is obvious when you think about it: if an app is trying to clean your entire phone, it has to be vague about what it's actually doing. And vagueness creates fear. So you get the opening screen that says YOUR PHONE IS IN DANGER or YOUR STORAGE IS CRITICALLY LOW. It's a lever. It works. But it's not honest.

When we started building Culr, we made a choice that felt counterintuitive: we'd only clean camera rolls. iPhone or Android. Photos and videos. Nothing else. No system files, no cache deletion, no RAM promises. Just the one thing that actually fills up your phone and that you actually have emotional attachment to.

That constraint changed everything.

The iCloud sync check that almost didn't make it

Here's a technical detail that sounds boring until it isn't: before Culr deletes anything, it checks whether that photo or video has synced to iCloud. Every single delete. It's a three-second operation most of the time, but we do it anyway.

I mention it because the engineer who built it asked twice whether it was worth the overhead. "Most people won't notice," he said. "Most people have iCloud Photos on and assume everything's backed up anyway."

But that email about Cleaner Kit haunted us. And the truth is, most people don't know what's synced. So we built it in. You never lose a photo that hasn't reached your iCloud library. You might lose a photo you thought was backed up but wasn't, sure. But that's a user problem, not an app problem. And the user can see exactly why.

I mention this because it's the opposite of how cleaner apps usually work. They move fast, delete aggressively, show you a big number at the end ("Freed 23 GB!"), and leave the consequences for you to discover later.

One question we asked early on: who actually needs this?

Not everyone with a camera roll needs Culr. If you have 800 photos and you delete them as you go, you don't need us. But if you're someone who shoots a lot, who has thousands of photos sitting there because deleting them one by one is soul-crushing, who's been using the same iPhone for five years and let it pile up, who shoots events or weddings and needs to cull hundreds of shots fast, then you do.

The swipe-to-keep, swipe-to-delete workflow is the heart of it. You go through your camera roll at whatever pace feels right. Keep the one you want. Delete the rest. It's friction. But it's the right friction because it forces you to actually look at what you're deleting. And you can undo anything.

We've had photographers tell us they used to spend two hours manually culling a wedding gallery. Now they do it in twenty minutes. That's not because we're smarter; it's because we built a flow that lets them make fast decisions without gambling with their files.

What the feature tiers actually mean

We offer three versions. Free covers a lot: you can swipe-cull as much as you want, clean up screenshots, detect WhatsApp media. Fifty duplicate deletions a month. That's enough for most people.

Plus gives you unlimited duplicates, similar photo grouping (so if you shot ten nearly identical shots of your kid, it shows them together), and burst ranking. That's the upgrade that appeals to people who've been sitting on years of photo debt.

Pro is where the specialist features live. Photographer Mode groups your shots by 2-hour gaps, so a morning shoot and an evening shoot are separate culls. Scheduled auto-clean runs daily or weekly in the background. The storage analytics show exactly what's eating your storage over the past two weeks. And the AI Best Shot feature flags which frame in a group of similar photos is likely the sharpest or the best composed.

I'm only mentioning this because the tiers matter, and they're intentional. We didn't design them to milk subscription revenue. We designed them so that a casual user isn't paying for photographer tools they'll never use, and a wedding photographer isn't held back by a free tier that can't keep up with their workflow.

Why we don't do weekly billing or scare messaging

A lot of apps charge £4.99 a week and call it a monthly subscription. Or they open with a fake warning about your storage to convince you to upgrade immediately. Or they load ad-tracking software into the app so they can profile you and sell your behaviour to advertisers.

We don't. Monthly is monthly. Annual is annual. Lifetime is lifetime. No tricks. No tracking SDKs. No opening scare screen.

The reason is simple: you're trusting us with your photos. That's the most personal thing on your phone. You don't build that trust by being clever with your billing cycle or by making you feel panicked. You build it by being boring in the right ways. By doing the one thing you ask it to do, and doing it without drama.

That approach costs us. It means we don't make as much per user as a subscription trap would. It means we have to actually build features people want instead of relying on fear to drive upgrades. And it means we'll never hit the same user numbers as Cleaner Kit or CCleaner. But it's the only way we were willing to build it.