Nitro Photo vs 4S Camera
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nitro Photo
This advanced photo editor and manager offers powerful tools for photographers, including AI-driven masking and object removal. It provides flexible storage options and extensive camera RAW support, with a free 7-day trial and cross-platform availability.
- AI-generated masks
- Generative AI object removal
- Extensive RAW camera support
- Flexible storage options (Files.app, external, Photo Library)
- Advanced editing adjustments
- Smart Albums and keyword tagging
- Cross-platform compatibility (macOS, iPhone, iPad)
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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
4S Camera
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4S Camera lets you turn off, one by one, seven kinds of automatic “processing” that today’s iPhone applies when you take a photo. Have you ever felt that a photo looked different from what you saw — too bright, too sharp, a little unnatural? When you press the shutter, iPhone often combines multiple frames, lifts shadows, and sharpens edges automatically. Stock Camera settings do not let you turn those off item by item. 4S Camera is for shooting with that automatic processing turned off. It is not an app for prettier photos, and not a retro filter. Blown highlights and grain in dark areas stay as the result of cutting. It does not weaken processing after a photo is already taken. It does not use multi-frame data such as Apple ProRAW. It changes the capture path: a single-frame Bayer RAW from the sensor is developed into a JPEG without the corrections you turned off. What you can turn off (set to zero / disabled): 1. HDR-style tone: lifts dark areas and holds bright ones (not multi-frame fusion) 2. Sharpening: makes edges look crisp 3. Noise reduction: smooths grain and color blotches 4. Lens distortion correction: fixes edge stretch from the lens 5. Look controls: detail, highlight/shadow recovery, moiré reduction, and similar finishing 6. Extended dynamic range (EDR) 7. Capture / develop “Auto”: hand-off to newer automatic processing (and related capture helpers) When a switch is On, we do not add our own look — we leave that item to iPhone’s default. What we cannot turn off: We cannot make iPhone image processing completely zero. These basics remain: • Minimum device preprocessing before RAW • Color conversion and the basic contrast curve needed for JPEG Modes and what “4S” means: • Simple: pick 4S, 8, or XS (this is where you start) • Detail: era slider plus the seven switches “4S”, “8”, and “XS” are not recreations of those iPhone cameras. They are a scale for how much processing is left on. Leftmost 4S means all seven corrections are off. Note: • Live viewfinder and the saved JPEG can differ in brightness and color. That is not a bug — the finder is an approximate preview. The saved photo is the result. • Requires a physical iPhone that can capture sensor Bayer RAW. Pricing (no subscription): Turning processing off to shoot stays free. • First 7 days: full access (nothing renews automatically) • After that (free tier): 4S (all seven off) shooting and JPEG save stay free • One-time ¥500: 8 / XS, Detail (seven switches), DNG save, crop, and shooting assist (non-consumable)
Screenshots
Verdict
The clearest difference is update cadence: 4S Camera at weekly against Nitro Photo's every 3 weeks. Nitro Photo's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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
Both are free to download. Nitro Photo sells 9 in-app purchases, starting at $2.99 per month and 4S Camera sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Nitro Photo ships an update every 3 weeks, 4S Camera weekly. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.
| Parameter | Nitro Photo | 4S Camera |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (64 ratings) — better | — |
| Positive reviews | 86.4% of reviews | — |
| Number of ratings | 64 — better | — |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 18.6 | 18.0 — better |
| Further details — not scored | ||
| Size | 303 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Gentlemen Coders | TAKEHITO AWASHIMA |
Bugs and 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
4S Camera
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Nitro Photo
- Monthly (RAW Power Discount)$2.991 Month
- Monthly Plan$3.991 Month
- Annual (RAW Power Discount)$19.991 Year
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- Annual Plan$29.991 Year
- 7 Day Free TrialFree
- Full Version (RP - No Discount)$79.99
- Lifetime (RAW Power Discount)$79.99
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- Full Version (No discount)$99.99
- Nitro Lifetime Purchase$99.99
4S Camera
- Full Unlock$2.99









