Comparison

Screen Prep vs Megapixels Resolution Calc

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

Head to head
About

Screen Prep

Features
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Screen Prep readies any iPhone, iPad, or Apple Watch for VFX screen replacement. Fill the display with a chroma key color, add tracking marks, and lock it down so your compositor gets a screen that's easy to key and track. โ€ข Choose from preset chroma colors or pick your own with a color wheel โ€ข Add tracking marks and adjust their position, size, and color โ€ข AddAdded: Tracking marks can scroll vertically, horizontally or both, and pinch to zoom, so actors can scroll the screen โ€ข Frame marks for the full screen, 16:9, or an Apple Watch display โ€ข Display color bars, a grid, or a checkerboard instead โ€ข Lock the screen so actors can't trigger the controls by accident โ€ข Save setups and recall them in a tap โ€ข Export a 16:9 image to Photos to show on a TV or monitor via AirPlay APPLE WATCH Send saved screens to Apple Watch. Swipe or turn the Digital Crown to choose one, then double tap to lock it while the actor wears the watch. WORKS EVERYWHERE In addition to iPhone, Screen Prep supports portrait and landscape on iPad, the outer and open screens of iPhone Duo, and full screen on Apple silicon Macs. Need it on another screen? Export an image, then transfer it or AirPlay it to a TV or another display. A built-in Manual covers every feature. Site and Privacy Policy: https://squirrelfx.llc/screen-prep.html

About

Megapixels Resolution Calc

Features
Read full description

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.

Screenshots

Screen Prep4 screens
Megapixels Resolution Calc4 screens

Verdict

The call

The clearest difference is price: Megapixels Resolution Calc at $2.99 against Screen Prep's $9.99. Megapixels Resolution Calc also leads on iOS requirement (13 vs 16.0). Screen Prep's advantage is update cadence (every 6 months vs every 38 months). On ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Screen Prep costs $9.99 and Megapixels Resolution Calc $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Screen Prep ships an update every 6 months, Megapixels Resolution Calc every 38 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

Scorecard3 real differences ยท 3 level
Screen Prep versus Megapixels Resolution Calc: the parameters behind the verdict, then further details
ParameterScreen PrepMegapixels Resolution Calc
Price$9.99$2.99 โ€” better
Update frequencyEvery 6 months โ€” betterEvery 38 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS16.013 โ€” better
Further details โ€” not scored
Size3 MB1 MB
Age rating4+4+
DeveloperSquirrel FX LLCHeng Jia Liang

In-app purchases

None

Screen Prep

No in-app purchases

None

Megapixels Resolution Calc

No in-app purchases

Questions

Is Screen Prep free?
Screen Prep costs $9.99, with no in-app purchases.
Is Megapixels Resolution Calc free?
Megapixels Resolution Calc costs $2.99, with no in-app purchases.
Do Screen Prep or Megapixels Resolution Calc have ads?
Neither Screen Prep nor Megapixels Resolution Calc shows ads.
Which is updated more often, Screen Prep or Megapixels Resolution Calc?
Screen Prep ships an update every 6 months, and Megapixels Resolution Calc every 38 months. Most recently, Screen Prep was updated on October 24, 2026 and Megapixels Resolution Calc on October 9, 2026.

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