645 PRO Mk III has been designed, from the ground up, for professional and serious amateur photographers. So it works the way a camera works—and it’s the most powerful camera app we’ve ever seen!

You have instant access to everything that can be controlled on an iOS camera.

That means fully manual exposure control, as well as semi-automatic Shutter Priority and ISO Priority, together with fully automatic exposure with a choice of spot or matrix metering. Automatic and semi-automatic modes also include ±3 Ev. exposure compensation, while the on-screen meter lets you judge your manual exposures to perfection.

It means the choice of AWB or a selection of white balance presets—and even the ability to create and save a completely custom white balance.

And it means manual focus override—just swipe your finger up and down the viewfinder to control the lens position. And you even get focus-peaking to help you identify what will be in perfect focus!

And you have all the information you need, all the time, including real-time exposure metering, real-time ISO and shutter-speed readings, Ev, real-time GPS data and a choice of histograms. And many aspects of the interface can be customized, so you can—for example—configure the Shutter Release button to behave the way you want.


645 PRO Mk III combines the ultimate in lifelike "film look" output with the ability to save completely unprocessed image data at the highest quality possible—as Camera RAW.

Its gorgeous Film Modes are inspired by classic film stock as used by top photographers from the 1960s through to the present day—and if you want to edit them, and save custom, personalized films, you can. Meanwhile its unprocessed images are just that—ready for later post-processing or to be used "as is" for reportage.

Whether you shoot Film Mode, unprocessed or both, you have the choice to save in HI-Quality JPEG, MAX-Quality JPEG, or—for top image fidelity—TIFF.

And you have the option to shoot in one of seven formats, from square 6x6 to panoramic 6x17, all inspired by classic Medium Format cameras. Also inspired by film, you can add one of 21 Photo Filters, all with fully-adjustable densities.

You'll get photographs from your iPhone like you never imagined!

Drawing its inspiration from the obsession with quality embodied by top-end Medium Format film and digital cameras, 645 PRO Mk III exists purely to help you use your iPhone as a tool for composing, taking, saving and sharing the finest possible photographs.

"645 PRO takes the best iPhone photos you have ever seen"
-- Charlie Sorrel, Cult of Mac

"My number 1 camera replacement app"
-- Glyn Evans,

"If you’re looking for a camera app which leans toward a professional pallet of tools, then 645 PRO is certainly the best there is"
-- Ben Reid, Redmond Pie

"Not only do you get what is arguably the best, serious-shooter, camera for the iPhone but you also get a level of customer care, devotion and attention to detail that you will be hard pressed to find elsewhere on the App Store. In short: 645 PRO is a steal. Buy it today!"
-- Aaron Stanley, Appsolute Reviews

What’s New

Version 5.14

Release 5.14
* Bug fix: User Guide works again...
Questions or problems? Please CONTACT US: we'll help you promptly!

Ratings and Reviews

3.8 out of 5
63 Ratings

63 Ratings

pitzeleh8 ,

Great app but laggy on my SE

I've always had some lag issues with this app but they've gotten pretty bad. Sometimes it's fine. Other times... Choppy viewfinder and a lot more lag than in the past (E.g. while framing a shot or immediately after taking one, on HQ JPG mode). Hope to see it back to form someday. Finally, battery drain is extreme compared to other camera apps (VSCO, Filmborn).

TomBAnderson ,

Hands down best photography app for IOS - and incredible support

This is by far the best app that I have found. My Canon 60d doesn't see nearly as much action since I loaded 645 Pro Mk III on my iPhone.

Aside from the outstanding performance of the app itself, the support is incredible. I had upgraded my iPhone to IOS 11 yesterday, and it caused a glitch with saving of photos to the camera roll. I had shot several photos of the Mars/Venus conjunction at sunrise this morning, and then could not find them. I sent a support message at 6:15 am, and had a reply from Mike Hardaker within minutes telling me how to correct the problem. (IOS 11 removes 645 Pros access to photos, and then when you reset it, it doesn't update until you completely shut down the app).

Best app investment I've ever made.

d-v-b ,

Good quality in TIFF but unstable

While I like this app and find the TIFF format to be a big improvement over JPEG, the instability on my iPhone 4S makes the app frustrating to use. When it's not crashing to the home screen, it's locking up or refusing to respond to shutter presses. So much potential, but the endless missed shots make me regret my purchase. This app needs work.

Update: Since posting this review, I've moved on to other hardware: first an iPhone 6 Plus and now an iPhone XS. Initially, it ran well on the 6 Plus and was a pleasure to use. Unfortunately, this is no longer the case for the 6 Plus and that has not been resolved with the move to the new XS hardware. At this point in time – October 2018 – the live view lags; the volume buttons no longer work as a hardware shutter release; and file saving is unreliable. It is essentially unusable. That's a real shame.

App Privacy

The developer, Michael Hardaker, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer's privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


Michael Hardaker
9.6 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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