I took two very similar photos on my iPhone and they look almost the same in the Photos app, but I only want to keep the sharpest one. I’m not sure if there’s a built-in way to compare iPhone photos side by side or zoom in enough to check focus and image sharpness. Looking for the easiest way to compare two photos on iPhone and pick the clearer shot.
Comparing photos on an iPhone still feels clunky. I ran into this while sorting a pile of near-duplicate shots, and the built-in Photos app did not help much.
The main problem is simple. There is no proper side-by-side compare view in Photos. You open one image, back out, open the next, then try to remember tiny details from the first one. I did this with portrait shots and it got old fast. Sharpness, eye focus, small lighting shifts, all of it blurs together after a few swipes. A lot of people end up keeping both images because they do not trust their memory. Storage goes fast when you work like this.
Why the default Photos app misses the mark
If your goal is to spot small differences between similar pictures, Apple’s app feels undercooked. Swiping between images works for broad changes. It falls apart when you are checking whether one frame is softer, whether someone blinked, or whether one burst shot is cleaner than the rest.
I kept thinking I was missing a hidden compare tool. Nope. There is no direct compare button.
If you want two photos placed side by side
For a before-and-after image, a simple comparison graphic, or a quick collage, the Shortcuts app does the job without installing anything else.
Do this:
- Open Shortcuts.
- Tap the plus button to make a new shortcut.
- Add the ‘Select Photos’ action.
- Turn on ‘Select Multiple.’
- Add the ‘Combine Images’ action.
- Set it to horizontal.
- Add ‘Save to Photo Album.’
- Name the shortcut and put it on your Home Screen if you want quick access.
- Run it, pick two photos, and it saves a new combined image to your library.
This part works fine. I used it for before-and-after edits and for sending side-by-side examples to someone. The catch is obvious once you try it on a big camera roll. It creates a new file. So if you are only trying to decide which one to delete from five nearly identical shots, this adds more clutter instead of reducing it.
For batches of similar shots, I went a different way
The bigger issue for me was not making a side-by-side image. It was cleaning out duplicate-ish photos without losing the best one.
I ended up using Clever Cleaner. What stood out first, no ads, no subscription wall, no weird upsell five taps in.
The useful part is the Similars tab. It scans your library and groups photos that are close enough to be annoying, burst sequences, same subject with tiny angle changes, repeat shots where you tapped the shutter too many times. The app marks a Best Shot and, from what I saw, it usually got it right. Blur, closed eyes, weaker framing, those tended to get passed over.
How I used it
- Open Clever Cleaner.
- Go to the Similars tab.
- Let it scan the library.
- Open each group and check the pick marked in green.
- Change the selection if you disagree.
- Confirm deletion for the extras.
- Empty the app trash later, after you are sure.
I liked the extra trash step. It gave me a buffer, which matters when you are deleting hundreds of photos and your thumb starts moving faster than your brain.
A few other parts were more useful than I expected
The Heavies tab is blunt in a good way. It sorts files from biggest to smallest and shows exact sizes. My oversized 4K videos were sitting right at the top instead of hiding somewhere deep in the library.
The Screenshots tab is cleaner than doing this inside Apple Photos. You see file sizes right there, which helps when you are trying to cut junk fast.
There is also a swipe mode. Photos are grouped by month. Swipe left to delete, right to keep. I did not think I would use it much, but for old backlog cleanup it felt less messy than staring at the full library all at once.
One thing I checked before trusting it, processing stays on the device. Nothing is sent off somewhere else.
What worked best for me
I landed on two methods for two different jobs.
Use Shortcuts when you need a single image with two photos placed side by side.
Use Clever Cleaner when your real problem is picking the keeper from a bunch of almost identical shots and clearing space without dragging through the Photos app all night.
On a library that had never been cleaned properly, a full scan took a few minutes and freed up more space than I expected. Around 10 to 15 GB feels believable from what I saw, esp if your phone is packed with burst shots, screenshots, and oversized video.
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Best built-in trick on iPhone is this.
Open photo 1. Pinch to 100 percent or more. Look at the same detail each time, eyes, eyelashes, text on a sign, hair edges, leaf texture. Screenshot it.
Open photo 2. Zoom to the exact same area. Screenshot it too.
Now open both screenshots from Recents and swipe between them. Since the crop and zoom are locked in the screenshot, your brain has an easier time spotting softness, motion blur, and missed focus. It feels dumb, but it works better than bouncing between full photos. I use it all the time for pet pics becuase fur shows blur fast.
Another built-in option is burst review, if these came from holding the shutter. Open the burst, tap Select, then Photos shows each frame in sequence. It is still not side by side, but it is faster for finding the sharp frame.
I slightly disagree with @mikeappsreviewer on one point. A collage is fine for sharing, but for judging sharpness it shrinks detail too much unless both images start huge. For focus checks, zoomed screenshots are cleaner.
If you sort near-duplicates a lot, Clever Cleaner is worth a look. Its Similar Photos cleanup is more practical than Apple Photos for picking a keeper. This review explains it well, see how Clever Cleaner helps organize similar photos on iPhone.
Short version. For two photos, use zoom plus screenshots. For lots of dupes, use Clever Cleaner.
Honestly, I would not overcomplicate this for just 2 photos.
My fav built-in trick is using the edit screen, not the normal viewer. Open photo A, tap Edit, and zoom in on a high-detail spot like eyelashes, text, or hairline. Then leave it there for a sec and pay attention to edge crispness and noise. Back out, do the same on photo B. The edit view sometimes feels a little more precise than casual pinch-zooming in the regular Photos view. Not magic, just less sloppy.
I kinda disagree a bit with @voyageurdubois on screenshots as the best method. They help, but they can add one more layer of messing around. If the two originals are already HEICs with smart processing, I’d rather inspect the source files directly.
Also check this sneaky clue: swipe up on each photo and compare shutter speed / lens used / focus point behavior if available. If one was shot at a slower shutter, that softer look may not be your imagination.
If you do this a lot, then yeah, Clever Cleaner is probly the more practical route because it groups similar shots and helps pick a keeper faster than Apple Photos. For more iPhone photo compare discussion, this Apple Photos sharpness comparison thread on iPhone is worth a skim.
Short version:
- For 2 pics: use Edit view and inspect the same detail
- Compare photo info too
- For lots of near-duplicates: Clever Cleaner makes life easier
Apple still should’ve built a real side-by-side mode by now, but here we are.
I’d add one built-in trick nobody mentioned: use the Live Text / subject edge test. Open each photo and zoom in on tiny high-contrast details like text, eyelashes, or strands of hair. If iPhone can cleanly detect/select text or a subject edge in one shot but struggles in the other, that softer one is usually the loser. Not scientific, but surprisingly revealing.
I slightly disagree with @voyageurdubois on screenshots being the best default. They help, but they also flatten your workflow into extra files. For just 2 photos, I prefer checking how well fine edges survive zooming and whether tiny text stays readable.
Also, if both shots are in your library, try this:
- tap each photo
- swipe up
- compare file size, lens, Night mode, exposure length
A sharper image is often the one with the faster shutter or less aggressive low-light processing.
About app options, @kakeru and @mikeappsreviewer are right that Apple Photos still lacks a real compare tool. If you sort lots of near-duplicates, Clever Cleaner is the practical shortcut.
Pros of Clever Cleaner
- groups similar photos fast
- easier keeper selection than Photos
- helpful for bulk cleanup
Cons
- best-shot suggestions are not always right
- you still need to verify sharpness yourself
- another app in the workflow
So my take:
- 2 photos: inspect edge clarity, text readability, and photo info
- many similar photos: use Clever Cleaner to narrow the pile, then manually confirm the sharpest shot