UD Color Checker vs First Rush Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UD Color Checker
Simulate various types of color vision deficiency using your camera or photo library. Easily convert images to see how they appear to individuals with common color blindness conditions.
- Camera image simulation
- Library image simulation
- Trichromat simulation
- Protanope simulation
- Deuteranope simulation
- Tritanope simulation
- Save converted images
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This App is to simulate a color vision deficiency converting an image from a camera or a library Camera button: take a picture or choose a image from library C button: simulate trichromat(Common) P button: simulate Protanope D button:simulate Deuteranope T button:simulate Tritanope Folder button: save converted image Very simple simulation just for reference
First Rush Viewer
This free companion app allows directors, DPs, and crew to view live camera streams from a macOS application on the same network. Monitor up to four camera feeds with stream health feedback and screen recording protection.
- Live camera stream monitoring
- Multi-camera support (up to 4)
- Stream health feedback
- Bonjour network discovery
- QR code pairing
- View-only operation
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First Rush Viewer is the free companion monitoring app for First Rush on macOS. Use it on set to view live camera streams from a Mac running First Rush on the same local Wi-Fi or production monitoring network. The Viewer is designed for directors, DPs, script supervisors, editors, and crew who need a lightweight monitor during multicam SDI recording. Features: - Discover First Rush on the local network with Bonjour. - Pair with a 6-digit code or QR code. - Monitor 1, 2, 3, or 4 camera streams. - iPhone and iPad layouts for single view and multicam viewing. - View-only operation: the iOS app does not record clips. - Stream health feedback for frame rate, jitter, decode latency, render latency, and dropped packets. - Screen recording detection and protection UI. Requirements: - First Rush for macOS running on the same local network. - Local Network permission enabled on iPhone or iPad. - Camera permission only if you want to scan the pairing QR code. First Rush Viewer is free. Recording, SDI capture, ProRes writing, and hardware control are handled by the Mac app.
Screenshots
Verdict
The clearest difference is ads: First Rush Viewer at none against UD Color Checker's shown. First Rush Viewer also leads on update cadence (every 2 weeks vs every 5 months). On price, in-app purchases, monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
UD Color Checker ships an update every 5 months, First Rush Viewer every 2 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | UD Color Checker | First Rush Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Takuya Kawakami | 진규 한 |
Customer experience
UD Color Checker
First Rush Viewer
In-app purchases
UD Color Checker
No in-app purchases
First Rush Viewer
No in-app purchases
Questions
Is UD Color Checker free?
Is First Rush Viewer free?
Do UD Color Checker or First Rush Viewer have ads?
Which is updated more often, UD Color Checker or First Rush Viewer?
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