Oak Viewer vs LutRec
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Oak Viewer
A private, on-device photo viewer for art collectors and photographers. Browse, import, organize, and rate your image collection with detailed insights and customizable viewing options.
- Full-screen image and video viewing
- On-device private library
- Built-in private browser for discovery
- Organize with unlimited folders
- Rate images with a 1-5 star system
- Detailed image metadata and histograms
- Customizable themes and widgets
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Oak Viewer is a private, intentional photo viewer for art collectors, photographers, and anyone who loves images. Discover artwork online, download gallery ZIP files in the built-in browser, and explore your collection in a calm, distraction-free space. Swipe smoothly between images, inspect fine details, and rate your favorites, all while keeping your library fully on-device. Oak Viewer is designed to feel more like a personal gallery than a utility. FULL-SCREEN VIEWING Experience your images the way they were meant to be seen. Swipe fluidly between photos, zoom to pixel level, and explore every detail with intuitive gestures. A clean interface keeps the focus on your images, while still giving you quick access to ratings, metadata, and tools when you need them. Also supports videos, PDFs, and text files in the same library. PRIVATE, ON-DEVICE LIBRARY Your collection stays on your device. No accounts. No cloud uploads. Just your library. Optional biometric app lock adds an extra layer of protection. DISCOVER & IMPORT COLLECTIONS Browse art and photography sites with the built-in private browser. • Long-press to save images directly • Import entire ZIP galleries • Batch import collections Build your collection effortlessly. ORGANIZE YOUR GALLERY Create unlimited folders and nested folders. Use Smart Folders to automatically gather images by rating, keeping your best work always within reach. Pin favorites for instant access. RATE & CURATE Review your collection with a fluid 1–5 star rating system. Long-press and slide to rate instantly while browsing, perfect for large collections. IMAGE INSIGHTS Learn more about every image: • Full EXIF metadata • Filename and resolution details • Real-time RGB and luminance histograms • Highlight and shadow clipping indicators • Precise zoom and panning feedback WIDGETS & QUICK ACCESS Bring your collection to your Home Screen: • Picture Frame widget rotates favorite folders • Resume widget jumps back into your last session DESIGNED YOUR WAY Customize your experience: • Themes and custom app icons • Custom library backgrounds • Adjustable grid density and spacing • Slideshow viewing • Keyboard shortcuts on iPad • Configurable trash policies TRY IT FREE Oak Viewer includes a 7-day free trial with full access to every feature. After your trial, choose the plan that works for you: • Yearly — $2.99/year, auto-renewing • Lifetime — $9.99, one-time purchase Payment is processed by Apple. Manage or cancel anytime in Settings > Subscriptions. Whether you’re collecting digital art, studying photography, or simply enjoying images at your own pace, Oak Viewer gives your collection a private space to breathe. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://oakviewer.com/privacy
LutRec
Transform your iPad into a professional LUT monitor and external recorder. Supports UVC and UAC connections for seamless integration with cameras, offering advanced LUT capabilities for video professionals.
- iPad LUT monitor
- External video recorder
- UVC and UAC support
- 4K and 1080P resolutions
- Log restoration LUT
- Main LUT
- Secondary LUT
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**LutRec — Turn Your iPad into a Professional Real-Time LUT External Recording Monitor** On set, how the picture looks shouldn't have to wait until post-production to be revealed. LutRec transforms your iPad/iPhone into a professional-grade real-time color grading external recorder: connect a UVC camera (such as the Sony A7C II), apply LUT color grading in real time, and see exactly what you get. You can record or capture the graded result directly, eliminating tedious post-production work. **Real-Time LUT Grading Preview** Powered by Metal + Core Image hardware acceleration, the preview runs smoothly without frame drops. Both the working and output color spaces are unified to Rec.709, delivering professional color management and reliable color accuracy. **Full .cube LUT Compatibility** Import .cube LUT files with a single tap, supporting 1D/3D LUTs. Oversized LUTs are automatically downsampled, ensuring stable compatibility with mainstream color grading files. **Camera Log Pre-Restoration** A two-stage professional workflow designed for Log footage such as S-Log3: first use a restoration LUT to convert flat footage back to Rec.709, then layer a stylistic LUT on top — all in one step. **Adjustable LUT Intensity** Real-time blending from 0–100% opacity lets you fine-tune while you watch, finding the perfect look for your shot. **Recording / Photo / Live Photo** During video recording, LUTs are burned into the footage in real time with efficient HEVC encoding. Photo and Live Photo capture are supported, with results saved directly to the system album. **Stabilization & Multi-Lens** Toggle stabilization on or off with one tap. Freely switch between front, telephoto, main, ultra-wide, and external cameras to suit various shooting setups. **Flexible Audio Input** Supports the iPad's built-in microphone as well as external UAC audio devices, so you can choose the recording setup that fits your needs. **Custom Watermark** Edit watermark text freely and overlay it with one tap, giving your finished work built-in copyright identification. **iPhone Remote Control for iPad** Bonjour automatically discovers devices on the same local network, letting you control iPad shooting from your iPhone: start/stop recording, take photos, capture Live Photos, switch LUTs, toggle stabilization, and change lenses — a one-person crew can work just as smoothly. **Minimalist Professional Interface** Full-screen, distraction-free preview with large, touch-friendly buttons — anyone can pick it up and shoot on set. Experience real-time LUT grading preview for free. Upgrade to the Pro version to unlock all professional features including video recording, photo capture, Live Photos, and stabilization.
Screenshots
Verdict
The clearest difference is update cadence: LutRec at every 2 days against Oak Viewer's every 4 days. LutRec also leads on iOS requirement (18.0 vs 26.1). On price, review sentiment, ads and in-app purchases 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. Oak Viewer sells 2 in-app purchases, starting at $2.99 per year and LutRec sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Oak Viewer ships an update every 4 days, LutRec every 2 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | Oak Viewer | LutRec |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 4 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 26.1 | 18.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 469 MB |
| Age rating | 17+ | 4+ |
| Developer | Jeremy Dunlap | 英武 宋 |
Customer experience
Oak Viewer
LutRec
In-app purchases
Oak Viewer
- Oak Viewer Pro$2.991 Year
- Lifetime Unlock$9.99
LutRec
- 解锁高级版功能$2.99









