Comparison

Cosmo Desktop vs PlanetEdit

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

Head to head
About

Cosmo Desktop

Access stunning NASA astronomy pictures on your iOS device. Easily browse, save, and set them as your wallpaper. Enjoy a user-friendly interface for exploring the cosmos.

Highlights
  • View NASA astronomy pictures
  • User-friendly browsing interface
  • Save pictures to photo album
  • Set pictures as iOS wallpaper
  • Free and ad-less experience
Features
Read full description

Cosmo Desktop serves the latest NASA astronomy pictures http://apod.nasa.gov/ to your iOS device in a few clicks. You can let you slide and flip through all the pictures in a user-friendly manner. If you would like to use the pictures to be your iOS wallpaper, just export the pictures to your iOS Photo Album first. You can then select the pictures at your iOS settings. All astronomy pictures are courtesy of the NASA Astronomy Pictures of the Day under public domain, or their respective owners. The Cosmo Desktop will always be free and ad-less. Please direct your appreciations to the APOD team by Robert Nemiroff and Jerry Bonnell http://apod.nasa.gov/apod/lib/about_apod.html Cosmo Desktop is also available on the Mac App Store: http://itunes.apple.com/us/app/cosmo-desktop/id553916089?ls=1&mt=12

About

PlanetEdit

This app helps you process videos of planets, automatically cropping them to center the celestial body. It offers various image editing tools and advanced features like wavelet layers for detail extraction and denoising. You can also trim videos before stacking and save your edited images.

Highlights
  • Auto crop video to center planet
  • Basic image processing (stretch, saturation, brightness, contrast, hue)
  • Interactive stacking slider
  • Trim video before stacking
  • 5 wavelet layers for detail and denoising
  • Save edited images
Features
Read full description

AstroEdit Planet is a very simple 4in1 app to stack planetary video. It will automatically crop the video and center the planet. It works on video that has planet moving across the view or planet centred in the view. When you open the app, it auto loads a sample Saturn video. Tap Stack button to begin! PlanetEdit integrates the four legacy desktop software into a single delicate mobile app. Traditionally, astronomer has to install 4 different programs to process planetary video. They are (in process sequence): 1. PPIP for cropping video 2. AutoStakkert! for stacking frames 3. Registax for wavelet sharpening 4. Photoshop for RGB alignment and coloring Features: - Open video or image. Accept all format recognised by the Photo app. In addition, it open .ser and .avi files. First, copy them to the Files app. Then tap Open button in PlanetEdit app. Choose Open Files App. Note that to copy avi file to your device, you may have to rename the file extension to .ser. Once copied to device, rename it back to .avi. Tested for avi 3.5Gb and ser 3.5Gb. - Auto crop video and center frame. - Auto set alignment points for stacking. - Lucky stacking slider. - Real time update of stacking result. - Use 2 finger to pinch zoom, 1 finger to drag and 1 finger to long press to compare a frame(best quality). - RGB alignment. - Basic image processing like saturation, bright, contrast and hue. - 5 wavelet layers to extract detail and denoise. - Save edited image to photo. PlnetEdit has been tested for video capture in seestar S30, S50 smart telescope, ZWO camera, refractive telescope 80mm and Dobson 200mm telescope. Email me at ustransit74@gmail.com if you need any assistance. Attached a short planet video file if necessary. Privacy policy and term of use (EULA) is at https://deepskycolor.blogspot.com/2018/12/privacy-policy-for-deep-sky-color-app.html

Screenshots

Cosmo Desktop4 screens
PlanetEdit2 screens

Verdict

The call

The clearest difference is review sentiment: Cosmo Desktop at 100% against PlanetEdit's 25%. PlanetEdit's advantage is update cadence (every 2 days vs every 6 months). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Cosmo Desktop ships an update every 6 months, PlanetEdit every 2 days. The most recent releases landed on September 11, 2026 and September 10, 2026 respectively.

Scorecard2 real differences · 8 level
Cosmo Desktop versus PlanetEdit: the parameters behind the verdict, then further details
ParameterCosmo DesktopPlanetEdit
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews — better25.0% of reviews
Number of ratings2 — better—
Update frequencyEvery 6 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.0
Further details — not scored
Size6 MB4 MB
Age rating17+4+
DeveloperPulsely Consultingyong chong loh

Customer experience

Cosmo Desktop

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

PlanetEdit

Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

In-app purchases

None

Cosmo Desktop

No in-app purchases

None

PlanetEdit

No in-app purchases

Questions

Is Cosmo Desktop free?
Cosmo Desktop is free to download, with no in-app purchases.
Is PlanetEdit free?
PlanetEdit is free to download, with no in-app purchases.
Do Cosmo Desktop or PlanetEdit have ads?
Neither Cosmo Desktop nor PlanetEdit shows ads.
Which is updated more often, Cosmo Desktop or PlanetEdit?
Cosmo Desktop ships an update every 6 months, and PlanetEdit every 2 days. Most recently, Cosmo Desktop was updated on September 11, 2026 and PlanetEdit on September 10, 2026.

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