Megapixels Resolution Calc vs GenR8
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Megapixels Resolution Calc
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How many pixels in a 12 megapixels image? How does that compare to difference aspect ratio? What is the resolution of Digital Cinema with 21:9 aspect ratio? How many megapixels by giving X width and Y height by image? How about the aspect ratio? The answer is here! This is a megapixel-resolution calculator, a tool to calculate and convert the graphical resolution base on 4 different aspect ratios 4:3 (SD), 16:9 (HD/fHD/4K), 21:9 (cinema) and 1:1. This tool also calculates and convert graphical resolution to megapixels. The output will include 4 different aspect ratios 4:3 (SD), 16:9 (HD/fHD/4K), 21:9 (cinema) and 1:1 if the ratio match one of these. Preview box will give you an impression for resolution input. 21:9, 16:9 and 4:3 is the ratio of x:y or width:height of the image sensor or output image/video format. Older digital cameras/camcorders aspect ratio is usually 4:3 (SD). However newer digital cameras/camcorders aspect ratio is 16:9 (HD/fHD/4K). Video cameras such as camcorders can be either 4:3 (SD) or 16:9 (HD/fHD/4K). Some camcorders (video and digital) can do both 4:3 (SD) and 16:9 (HD/fHD/4K). Thanks for your support and do visit nitrio.com for more apps for your iOS devices.
GenR8
Generate professional test patterns for display calibration and validation. Supports external displays, audio testing, and HDR signals. Ideal for video engineers, filmmakers, and content creators needing precise visual and audio analysis on the go.
- 28+ professional test patterns
- External display support (USB-C, AirPlay)
- HDR pattern support
- Audio test tones and live metering
- Precision controls and customizable overlays
- Export test patterns (PNG, PDF, JPG, TIFF)
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KEY FEATURES: * 28+ Professional Test Patterns - SMPTE color bars, calibration grids, convergence patterns, HDR test signals, luma stepping, IRE patterns, and more * External Display Support - Connect via USB-C to HDMI/DisplayPort or AirPlay. Full 1:1 pixel mapping for accurate calibration * AV Sync Test * Audio Test Tones - Sine, square, sawtooth, and white noise waveforms from 20Hz to 20kHz with live stereo metering * HDR Pattern Support - PQ curve test patterns, HDR color bars, and BT.2111 UHD patterns for HDR display validation * Precision Controls - Customizable aspect ratio overlays, diagnostic crosshairs, border guides, and adjustable scanning color bars * Live Audio Metering - Real-time L/R level meters with peak detection for audio signal monitoring * iPad Optimized - Split-view interface with pattern library sidebar and full-screen preview * Customizable Overlays - Display resolution info, clock, date, custom text, and diagnostic guides * Export Test Patterns in PNG, PDF, JPG, TIFF PERFECT FOR: - Video engineers calibrating displays - AV technicians testing signal chains - Filmmakers validating monitor accuracy - Content creators ensuring color fidelity - Anyone needing professional test patterns on the go DISPLAYS SUPPORTED: *External monitors, projectors, TVs, and broadcast displays via HDMI, DisplayPort, or AirPlay. Made with precision for professionals who demand accuracy.
Screenshots
Verdict
The clearest difference is price: Megapixels Resolution Calc at $2.99 against GenR8's $19.99. Megapixels Resolution Calc also leads on iOS requirement (13 vs 17.0). GenR8's advantage is update cadence (weekly vs every 38 months). On ads, in-app purchases 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
Megapixels Resolution Calc costs $2.99 and GenR8 $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Megapixels Resolution Calc ships an update every 38 months, GenR8 weekly. The most recent releases landed on July 9, 2026 and August 27, 2026 respectively.
| Parameter | Megapixels Resolution Calc | GenR8 |
|---|---|---|
| Price | $2.99 — better | $19.99 |
| Rating | — | 4.9 (9 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 9 — better |
| Update frequency | Every 38 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13 — better | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Heng Jia Liang | Christopher Van Hoose |
In-app purchases
Megapixels Resolution Calc
No in-app purchases
GenR8
No in-app purchases





