Folder (hidden data) vs AstroPup View
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Folder (hidden data)
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Keep your files, photos, passwords, notes, contacts, and to-do lists private — encrypted on your iPhone, accessible only through the app. • All your information is encrypted with AES • The only way to access your content is through the app • Lock individual sections with biometrics or a PIN • App Lock secures the entire app when it goes to the background • No internet connection needed • All data stays on your iPhone — no servers, no cloud • Private contacts — store secret contacts encrypted on your iPhone • Private to-do lists for tasks only you can see
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
Screenshots
Verdict
The clearest difference is in-app purchases: AstroPup View at none against Folder (hidden data)'s 1. AstroPup View also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 4 weeks). On price 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
Both are free to download. Folder (hidden data) sells 1 one-off in-app purchase. AstroPup View asks for nothing beyond the download.
Folder (hidden data) ships an update every 4 weeks, AstroPup View every 2 weeks. The most recent releases landed on October 11, 2026 and October 14, 2026 respectively.
| Parameter | Folder (hidden data) | AstroPup View |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 weeks | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 26.0 | 18.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Ezequiel Barreto | Aaron Freimark |
In-app purchases
Folder (hidden data)
- Remove Ads$0.99
AstroPup View
No in-app purchases
Questions
Is Folder (hidden data) free?
Is AstroPup View free?
Do Folder (hidden data) or AstroPup View have ads?
Which is updated more often, Folder (hidden data) or AstroPup View?
Other comparisons
