AstroPup View vs SuperDown
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AstroPup View
Easily manage and view astronomical image files like FITS and XISF. Offers GPU-accelerated rendering, automatic stretching, and QuickLook integration for a seamless user experience. Create icons and display smart metadata directly from your files.
- FITS and XISF format support
- GPU-accelerated rendering
- Automatic advanced stretching
- QuickLook integration
- Icon creation
- Smart metadata display
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Astrophotography images traditionally use an obscure raw image format called FITS, and a newer format called XISF. AstroPup View is designed to manage these files as easily as JPEGs: through Finder integration and viewer support. * XISF and FITS format support * GPU-accelerated rendering * Automatic advanced stretching * QuickLook integration * Icon creation * Smart metadata display
SuperDown
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SuperDown moves big files fast. Instead of pulling a file through one connection, it splits the download into parts and fetches them all at the same time, so disk images, video projects, datasets and installers arrive in a fraction of the time. WHAT IT DOES • Parallel transfers. Every file is fetched over up to 32 connections at once, and you choose how many. • Pause and resume. Stop a transfer and pick it up later, even after a restart, without starting over. • Reliable results. Every part is checked against what the server promised, so a dropped connection never leaves you with a corrupt file. • Automatic organization. Files land in Video, Music, Documents, Images, Applications or Compressed folders on their own. • Clipboard detection. Copy a link and SuperDown offers to fetch it. It never reads your clipboard unless you ask. • Speed limit. Cap bandwidth so calls and streaming stay smooth while transfers run. • Schedule. Queue a link now and have it start tonight. • Tricky links. Redirects and landing pages that hide the real file are followed automatically. ON MAC A native macOS app with a sidebar, search, sorting and keyboard shortcuts. Files are saved to Downloads/SuperDown. ON IPHONE AND IPAD Transfers keep running in the background, and a Live Activity shows progress in the Dynamic Island and on the Lock Screen. Finished files appear in the Files app under On My iPhone > SuperDown, ready to open or share. One app for Mac, iPhone and iPad. PRIVATE BY DESIGN No account, no analytics, no tracking. SuperDown connects only to the servers you download from.
Screenshots
Verdict
AstroPup View and SuperDown are too close to call on the numbers: across 7 compared parameters — price, rating, ratings volume and ads among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
On the App Store both sit at effectively the same score — 5.0 for AstroPup View against 5.0 for SuperDown. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
| Parameter | AstroPup View | SuperDown |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Aaron Freimark | Paria Rastegar Jooybari |
In-app purchases
AstroPup View
No in-app purchases
SuperDown
No in-app purchases









