I took two very similar photos on my iPhone, and they look almost the same in the Photos app. I’m trying to figure out which one is sharper before I delete one, but I’m not sure the easiest way to compare photo sharpness on iPhone. Looking for a simple method or app that helps spot focus and detail differences.
If you’ve ever tried comparing two iPhone photos and felt weirdly annoyed, same. I ran into this while sorting a pile of near-duplicate shots from a trip, and the stock Photos app did not help much.
Why the built-in Photos app is awkward
There’s no proper compare view in Photos. No split screen. No side-by-side toggle. You open one photo, back out, open the next, then try to remember if the first one was sharper or if someone’s eyes were half closed. I did this for a while and it was bad.
For tiny differences, focus, motion blur, facial expression, exposure, your memory is doing too much work. A lot of people end up keeping both versions, which is how your storage gets eaten bit by bit.
How I made two photos sit side by side on iPhone
If your goal is to create one combined image, like a before-and-after or a simple comparison graphic, the Shortcuts app does the job. No extra app needed.
Steps:
- Open Shortcuts.
- Tap the plus button to make a new shortcut.
- Add “Select Photos” and turn on “Select Multiple.”
- Add “Combine Images” and set it to horizontal.
- Add “Save to Photo Album.”
- Save the shortcut and give it a name.
- Run it, pick two photos, and it saves a merged image to your library.
This works fine. I used it a few times for sending comparisons to people. But it creates a new file every time, so it’s not great if you’re trying to decide which one photo to keep from a batch of ten nearly identical shots.
What worked better for duplicate-like photos
When I wanted to clean up similar photos, the shortcut method felt clunky. Swiping between images in Photos felt worse. What helped more was Clever Cleaner.
The useful part is the Similars section. It scans your library and groups photos that are close enough to be the same moment, burst shots, two angles of the same scene, repeated selfies, stuff like tht. Then it marks one as the best pick.
From what I saw, it tends to look for obvious problems like blur or closed eyes. You still review the group yourself, which I prefer anyway. I wouldn’t trust auto-selection blindly on family photos.
How I used it
- Open Clever Cleaner.
- Go to the Similars tab.
- Let it scan the photo library.
- Open each group and check the suggested best shot, marked in green.
- Change the selection if you want a different one.
- Confirm deletion for the extras.
- Empty the in-app trash later, after you’ve checked your choices.
That last part matters. Deleted items don’t vanish instantly, so if you tap too fast or change your mind, you’ve got a buffer.
A few other parts I thought were worth using
The Heavies tab is blunt in a good way. It sorts files by size, largest first. If your phone is packed with giant videos, they show up fast instead of hiding somewhere in the library.
The Screenshots tab was also more practical than I expected. It shows file sizes on each screenshot before removal. I had hundreds of old receipts, maps, random OTP screens, all the usual junk.
There’s also a swipe view grouped by month. Left to delete, right to keep. I thought it would feel gimmicky, but for a huge backlog it was easier than staring at the whole library at once.
One thing I did check
Processing stays on the device. Nothing gets sent off to some outside server. For photo cleanup apps, I look for tht first.
What I’d do
For making a literal side-by-side image, use Shortcuts.
For picking the best shot from a bunch of near-duplicates, use Clever Cleaner.
Those are two different jobs, and trying to force one method into both gets annoying fast. On my library, the cleanup pass took a few minutes and freed more space than I expected. If your photos have been piling up for years, seeing 10 to 15 GB come back doesn’t feel unusual.
2 Likes
Best manual way on iPhone, zoom to the same spot on both photos and compare detail.
What I do:
- Open the first photo.
- Pinch to zoom to 100 percent or a bit more.
- Look at hard edges, text, eyelashes, hair, or leaves.
- Screenshot the zoomed area.
- Open the second photo and zoom to the same area.
- Take another screenshot.
- Open both screenshots in Photos and flip between them.
It sounds dumb, but it works better than relying on memory. I don’t fully agree with @mikeappsreviewer on needing a combined image for this. For sharpness checks, crop or screenshot is faster and cleaner.
If you want more signal, check these:
- Motion blur, edges look smeared in one direction
- Missed focus, nothing looks crisp
- Noise reduction, skin or grass looks waxy
- Micro-contrast, fine texture survives in the better shot
If you shoot Live Photos, turn Live off and compare the same frame. Sometimes one pic looks softer from preview rendering.
If your library is full of near-dupes, Clever Cleaner helps sort similar shots faster before you delete. Also worth skimming this Apple Photos comparison thread for extra tips: how to compare duplicate photos in Apple Photos.
I’d skip the screenshot/combine-image route that @mikeappsreviewer and @codecrafter mentioned unless you’re comparing for sharing with someone else. For just picking the sharper keeper, it’s kinda extra.
What works better on iPhone is using Edit mode as a magnifier:
- Open photo 1 in Photos.
- Tap Edit.
- Zoom in on a high-detail area like eyes, text, hair, or edges.
- Pay attention to whether detail looks crisp or smeary.
- Swipe down to close, open photo 2, do the exact same thing.
Why Edit helps: sometimes the normal Photos view can look slightly softened by the preview rendering. In Edit, you’re more likely to judge the actual file clearly. Not perfect, but usally better.
Also check this:
- If one image has sharper subject detail but noisier background, keep the one where the subject matters most.
- Ignore overall brightness at first. A brighter pic can trick your brain into thinking it’s sharper.
- If both are HEIC from the same moment, compare corners too. Sometimes center focus is fine but the rest falls apart.
If you’re sorting lots of near-duplicates, Clever Cleaner is probly the more practical option because it groups similar shots so you’re not manually hunting all over your library. This article on a smarter way to organize and delete similar photos on iPhone explains it pretty well.
Short version: compare in Edit, zoom into the same detail, and don’t trust brightness or first glance. That’s the fastest non-annoying method I’ve found.
I’d add one check none of the others really leaned on: look at the photo info, not just the pixels.
If two shots seem equally sharp, tap i and compare:
- shutter speed
- Live Photo vs still
- lens used
- Night mode exposure length
A shot taken at a slower shutter often loses to a slightly noisier but faster one. That’s why I only partly agree with @codecrafter and @jeff that visual zoom alone is enough. Sometimes the “why” tells you which image will hold up better before you even pixel-peep.
Also, after zooming, pan to the focus plane. People often compare the wrong area. If the subject is a face, don’t judge using the shirt texture or background bricks. Check the eyelashes, iris edge, or hairline.
On bursts, scrub through and favorite the sharpest first, then delete the rest later. Faster than opening each one cold.
For bulk cleanup, Clever Cleaner is decent.
Pros:
- groups similar shots fast
- helpful for bursts and near-duplicates
- easier than manual hunting
Cons:
- “best shot” suggestion is not always your artistic pick
- you still need to inspect important photos yourself
- grouping can be too broad sometimes
So yeah, @mikeappsreviewer is right that tools help, but for a single pair I’d trust metadata plus zoomed subject detail more than making comparison images.