Comparison

KeyFilter vs Nitro Photo

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

KeyFilter

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Upscale photos to a maximum resolution of 8192 x 8192. Directions ---------- 1. Tap the + button on the top right navigation bar to import a file 2. Select a photo to edit by tapping the photo thumbnail in the application 3. Tap the Save button on the top right navigation bar 4. Choose the output resolution

About

Nitro Photo

This powerful photo editor and manager offers flexible storage, extensive camera support, and advanced editing tools. It allows for AI-powered masking, object removal, and a wide range of professional adjustments to enhance your images.

Highlights
  • Flexible storage options (Files.app, external, Photo Library)
  • AI-generated masks and object removal
  • Extensive camera RAW support
  • 16 professional adjustment tools
  • Presets, LUTs, and copy/paste adjustments
  • Smart album creation
Features
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Introducing Nitro, the brand new photo editor and manager from the developer of RAW Power. Nitro is designed for every photographer and every photograph. Try Nitro for free for 7 days without any obligation. No subscription signup, no nonsense. Requires iOS 16 or later. Easy, Powerful, Fast. Built with the latest technologies, Nitro has exceptional integration with iOS, including the most control over Apple’s RAW decoder. Its combination of flexible storage options, camera support, and editing tools is unmatched by any app. If you liked Aperture or RAW Power, you’ll love Nitro. Flexible Storage Options * Store your images in Files.app, external storage, or use Apple’s Photo Library * Rate, flag, and filter your images by 11 criteria, including rating, orientation and file type * Add keywords to images in the file system, manually or with AI assistance * With Photos, ratings, edits, and smart albums sync over iCloud * With Files.app and external storage, ratings and edits are stored in XMP sidecars * Move originals, ratings, and edits between the Photo Library and Files.app * UGreen NAS is not compatible with Nitro (bug reported to UGreen) Thoughtful purchasing and trial options * Try the app with absolutely no obligation. No signup, no unexpected charges. * Buy the app once, or get an inexpensive monthly and annual plan * All purchases include all platforms: macOS, iPhone, and iPad! Stop waiting for camera support * Supports more cameras than Photos, Darkroom, or Photomator, including compressed Fujifilm, Nikon HE and GoPro RAWs * By far, the most control over Apple’s RAW decoder. Fine tune your RAWs with noise reduction, moire, ProRAW tone mapping, and more. Seeing is Believing * View detailed metadata side-by-side * Synchronized Pan and Zoom of up to 4 images at once (iPad only) * Comparison mode helps you pick your favorites from a burst * Light and Dark user interface modes Masking with AI * AI-generated masks to quickly isolate a subject or background * Linear and radial gradients with invert and control over the ramp * Brushes provide full control over your mask, including softness, strength, and size * Edge Aware brushes automatically follow contours * Fine tune AI and gradients with brushes for maximum control Quick Fixes * Remove objects using Generative AI * Clone * Spot/Wire Removal * Highlight Recovery * Auto Enhance 16 Professional Adjustments * Tone, Enhance, White Balance, RAW * Crop, Lens Correction, Perspective * Levels, Curves, HSL, Split Toning * Detail, Depth, Black and White, Vignette, Channel Mixer * Apply most adjustments to masks including Levels, Curves, Blur, HSL, and Fringe control Presets, LUTs, and Copy/Paste * Quickly enhance images with a large set of presets and LUTs * Import your own LUTs and make your own presets * Advanced Copy and Paste of adjustments * Camera presets let you apply adjustments automatically by camera model Do More with the Photo Library * Make Smart Albums with complex queries * Search by file name, file type (including RAW+JPEG), and more * Sync everything over iCloud * Edit inside Nitro or with the included Photo Editing Extension Do More with the File System * Rate, flag, and edit non-destructively * All data is stored in XMP sidecars next to your originals * Search by file name, camera, lens, ISO, and more Workflow the way you want * Batch processing of presets, rotation and export * Export with control over size, compression, format, and metadata * Launch other apps after export for custom workflows * Integrated watermarking with both images and text * RAW Power edits are 100% compatible with Nitro After the trial, you need to purchase the app or subscribe to use all the features. Privacy Policy: https://www.iubenda.com/privacy-policy/68647707 Terms of Use: http://www.apple.com/legal/itunes/appstore/dev/stdeula

Screenshots

KeyFilter4 screens
Nitro Photo4 screens

Verdict

The call

The clearest difference is price: Nitro Photo at Free against KeyFilter's $0.99. Nitro Photo also leads on update cadence (every 3 weeks vs every 6 months). KeyFilter's advantage is in-app purchases (none vs 9) and iOS requirement (13.0 vs 16.4). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Nitro Photo is free to download; KeyFilter costs $0.99 up front. Nitro Photo sells 9 in-app purchases, starting at $2.99 per month. KeyFilter asks for nothing beyond the download.

UpkeepUpdate frequency

KeyFilter ships an update every 6 months, Nitro Photo every 3 weeks. The most recent releases landed on October 4, 2026 and October 19, 2026 respectively.

Scorecard4 real differences · 6 level
KeyFilter versus Nitro Photo: the parameters behind the verdict, then further details
ParameterKeyFilterNitro Photo
Price$0.99Free — better
Rating—4.8 (62 ratings) — better
Positive reviews—86.4% of reviews
Number of ratings—62 — better
Update frequencyEvery 6 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, Mac
Requires iOS13.0 — better16.4
Further details — not scored
Size2 MB299 MB
Age rating4+4+
DeveloperMichael NewellGentlemen Coders

Bugs and requests

KeyFilter

Not enough reviews yet to summarise bugs or requests.

Nitro Photo

Reported bugs

3 issues
  • Crashes when processing large batches of photos
  • Incompatibility with older devices
  • Editing controls not always responsive

Requested features

4 requests
  • Luminosity masks
  • Keyboard navigation
  • Folder thumbnails
  • Location and time editing

In-app purchases

None

KeyFilter

No in-app purchases

9 purchases

Nitro Photo

Subscriptions4
  • Monthly (RAW Power Discount)$2.991 Month
  • Monthly Plan$3.991 Month
  • Annual (RAW Power Discount)$19.991 Year
Show 1 more
  • Annual Plan$29.991 Year
One-time5
  • 7 Day Free TrialFree
  • Full Version (RP - No Discount)$79.99
  • Lifetime (RAW Power Discount)$79.99
Show 2 more
  • Full Version (No discount)$99.99
  • Nitro Lifetime Purchase$99.99

Questions

Is KeyFilter free?
KeyFilter costs $0.99, with no in-app purchases.
Is Nitro Photo free?
Nitro Photo is free to download, with in-app purchases available.
Do KeyFilter or Nitro Photo have ads?
Neither KeyFilter nor Nitro Photo shows ads.
Which is updated more often, KeyFilter or Nitro Photo?
KeyFilter ships an update every 6 months, and Nitro Photo every 3 weeks. Most recently, KeyFilter was updated on October 4, 2026 and Nitro Photo on October 19, 2026.

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