Cosmo Desktop vs SynLink
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- View NASA astronomy pictures
- User-friendly browsing interface
- Save pictures to photo album
- Set pictures as iOS wallpaper
- Free and ad-less experience
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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
SynLink
This professional controller facilitates astrophotography by offering broad compatibility with major camera brands and astronomical equipment. Its design emphasizes simplicity, restraint, and modernity for an intuitive user experience.
- Broad camera compatibility (Fujifilm, Canon, Nikon, Sony)
- Supports astronomical cameras
- Controls equatorial mounts
- Manages filter wheels and focusers
- Modern and simple interface
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It offers seamless compatibility with most mainstream cameras, including Fujifilm, Canon, Nikon, and Sony, as well as the majority of astronomical cameras, equatorial mounts, filter wheels, focusers, rotators, and flat panel devices on the market. SynLink is being developed by following the design philosophy of simplicity, restraint, and modernity.
Screenshots
Verdict
The clearest difference is rating: Cosmo Desktop at 5.0 against SynLink's 4.3. SynLink's advantage is update cadence (fortnightly vs every 10 months) and device support (4 vs 2). On price, ratings volume, 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. Neither carries in-app purchases, so what you see is what you pay.
Cosmo Desktop holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 2 and 3 respectively.
Cosmo Desktop ships an update every 10 months, SynLink fortnightly. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.
| Parameter | Cosmo Desktop | SynLink |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.3 (3 ratings) |
| Positive reviews | 90.0% of reviews | — |
| Number of ratings | 2 | 3 — better |
| Update frequency | Every 10 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 221 MB |
| Age rating | 9+ | 4+ |
| Developer | Pulsely Consulting | Suzhou UMa Technology Co., Ltd |
Customer experience
Cosmo Desktop
SynLink
In-app purchases
Cosmo Desktop
No in-app purchases
SynLink
No in-app purchases
