Koji Go review: Professional film color in a very basic iPhone app

Delivers true film color to iPhone videos and photos, but the variety of options and available looks are too limited.

koji go ios icon

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At a Glance
  • Koji Color Koji Go 1.0.3

koji go main menu

Koji Go offers a straightforward, no-frills user interface for applying professional 35mm film looks to videos and photos.

Instagram may have popularized the “faux film” look on mobile, but Hollywood has to create it the hard way. As any filmmaker will tell you, the talents of a good color timer are crucial to creating the right atmosphere or mood for a feature film, and the process is far more involved than choosing the right preset.

True colors

Koji Goi ($3 on the iTunes Store) is a stripped-down mobile version of the company’s film emulation plugins for Mac and Windows. Like Koji Advance ($199) and Studio ($799), Koji Go taps the talents of Dale Grahn, the veteran color timer responsible for crafting the look of Steven Spielberg’s Saving Private Ryan, Francis Ford Coppola’s monumental Apocalypse Now Redux release, and hundreds of other films.

Compared to those efforts, a mobile app might seem far less ambitious. The developers took thousands of light measurements striking film, which were then handed off to Grahn to work his magic. The result is a set of 19 authentic filters to make iPhone videos and photos look more professional. (Sadly, there’s no native iPad support.)

koji go film packs

If the three included looks aren’t enough, there are 16 more available via in-app purchase, some in packs of two or three.

Only three filters are included with purchase: Classic, Low Contrast, and Warm, which is likely to disappoint users accustomed to Instagram’s plentiful (and free) catalog. The others are offered via in-app purchases for $1 each or in packs of two or three, with no option to buy everything at a discount.

Modest expectations

Koji Go is a straightforward and simple affair: Choose a photo or video, then use on-screen arrows or slide your finger across the bottom to preview each filter. That includes those that haven’t been purchased, although you’ll need to buy in order to save or share to other supported apps using the iOS 9 extension.

There’s also an Advanced tab, a deceptive name considering you only can only adjust density and temperature, with no way to save modified presets. For an app that prides itself on authentic, professional results, this is a disappointment. Koji Go filters also can’t be applied as an extension from the Photos app—images can only be shared or saved as a new file.

The filters themselves are of high quality, but most looks are quite subtle compared to rival apps. The difference is more dramatic in motion than still photos, but Koji Go only provides a single frame preview. Users must save a video to see how filters look when played back.

koji go video preview

Koji Go works best on videos, but there’s no way to actually preview the filter in motion without first saving it to your iPhone.

Bottom line

Koji Go delivers true film color to iPhone videos and photos, but the variety of options and available looks are too limited.

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At a Glance
  • Koji Go transforms videos and photos with the look of 35mm motion picture film, courtesy of filters created by acclaimed Hollywood color timer Dale Grahn.


    • 19 professional 35mm film color looks
    • Works with videos and photos
    • iOS 9 share extension support


    • Only three basic looks included with app purchase
    • Single-frame video preview
    • Limited advanced controls
    • No native iPad support
    • Edited presets can’t be saved for reuse
    • No iOS Photos extension support for images
    • No discount for buying all in-app purchases
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