Dual vs Hidden Layer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dual
This app allows you to capture videos with integrated filters, offering unique moods and effects. It uniquely saves both vertical and horizontal video simultaneously, streamlining content creation for various platforms.
- Mood-driven video capture with baked-in filters
- Simultaneous vertical and horizontal video saving
- Customizable color palettes and temperature/tint adjustment
- Multiple aspect ratios and fisheye lens effect
- Instant filtered photo capture
- Front camera support for selfies
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Dual is a mood-focused video camera that applies your filter the moment you shoot. Instead of editing after recording, what you see on screen becomes your result. Its biggest strength is that a single recording can save both portrait (9:16) and landscape (16:9) videos at the same time—so you no longer need to shoot separately for Instagram Stories and YouTube. ■Filters that are finished as you shoot Choose GRAIN for a textured film mood, GLOW for soft light around your subject, or CLEAN for a bright and crisp tone. Combine filters with the color palette, where you can adjust temperature and tint directly, to create more than 800 moods. Add aspect ratios (9:16, 3:4, 1:1) and a fisheye lens for even more possibilities. ■Portrait and landscape at once Save portrait and landscape videos together with one button. Choose the ratio that suits you: 9:16, 3:4, or 1:1. ■Photos too Even when you are not recording, tap the shutter to save a filtered photo instantly. ■Trendy fisheye lens Turn the fisheye effect on or off with one button. It adds a subtle convex look at the center, along with delicate color fringing inspired by film cameras. ■Front camera support Keep the same mood when switching to selfie mode. Capture everyday moments with a film-like feeling—in both portrait and landscape at once.
Hidden Layer
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The photos we take often hide a dozen or so layers! Let's go see what's inside. This app lets you view every layer in a photo, and it also has a few useful or fun photo tools! View Layers Pick a photo and you'll see all kinds of layers inside it — maybe a depth map, a glasses mask, and more. Every layer comes with a detailed explanation. You'll discover a lot! For example, I found out that with ProRAW, what I usually see in my photo library is just the JPG preview layer inside… Of course, you can export layers too. For example, export the Low-Processing Rendering of a ProRAW main photo — a special rendering you've probably never seen. It's closer to the raw data and great for editing! You can also export the depth map and use it in Photoshop for more accurate background blur. Photo Tools Oh, and using these hidden layers, we can also process photos. For example, add a depth map to a regular photo and it becomes a Portrait mode photo, so you can refocus and add background blur right in the Photos app! There's also Remove Sharpening and Natural Key Photo — really useful if you prefer less sharpening, or want your Live Photo key photo to keep its colors. This is just the beginning. If you have a good idea, let me know!
Screenshots
Verdict
The clearest difference is price: Dual at Free against Hidden Layer's $0.99. On ads, in-app purchases, device support and iOS requirement 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
Dual is free to download; Hidden Layer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Dual | Hidden Layer |
|---|---|---|
| Price | Free — better | $0.99 |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Monthly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | haemin yeom | 北北 宋 |
In-app purchases
Dual
No in-app purchases
Hidden Layer
No in-app purchases









