SnailJet vs Matte Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SnailJet
Create and send personalized physical postcards to loved ones. Easily design custom cards with your own photos and messages to bring lasting joy through traditional mail.
- Design custom postcards
- Send real mail
- Affordable pricing
- Personalized messages
- Photo integration
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TXT is whatever. Real mail is forever. Give lasting joy, send real mail! Send homemade postcards to friends, family, and even yourself with SnailJet. It's easy and affordable!
Matte Viewer
This app allows you to preview and export depth and semantic maps from your iPhone photos. It offers an elegant interface and supports desktop-class features on iPad and Mac. The app prioritizes user privacy and has a very small file size.
- Preview depth and semantic maps
- Export mattes for 3rd party software
- Elegant and information-dense interface
- Desktop-class features on iPad/Mac
- Privacy-focused with no tracking
- Small app size
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Matte Viewer lets you quickly preview the mattes in photos taken with your iPhone, including the depth map and semantic maps. You can export them and use them in 3rd party software such as Photoshop, Touch Designer, in custom shaders, and so on. To have the most matte data available in your photos, use the Portrait mode in iPhone's Camera. - Elegant and information dense interface that quickly lets you preview all the different mattes. - Supports desktop class features on iPad + Mac: multiple windows, open through drag & drop, keyboard shortcuts, etc. - Respects your privacy: no 3rd party libraries or tracking. Uses the latest iOS APIs so you don't have to give access to your whole photo library. - Extremely small app size: only a few hundred kilobytes. Matte Viewer is part of PhotoTools by Héliographe: check out our website at https://heliographe.studio for more fantastic photography apps.
Screenshots
Verdict
The clearest difference is review sentiment: SnailJet at 100% against Matte Viewer's 0%. SnailJet also leads on rating (5.0 vs 3.0) and in-app purchases (none vs 1). Matte Viewer's advantage is update cadence (monthly vs every 2 months). On price, ads, 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
Both are free to download. Matte Viewer sells 1 one-off in-app purchase. SnailJet asks for nothing beyond the download.
SnailJet holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: SnailJet has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of SnailJet's written reviews are positive against 0% of Matte Viewer's.
SnailJet ships an update every 2 months, Matte Viewer monthly. The most recent releases landed on October 11, 2026 and October 5, 2026 respectively.
| Parameter | SnailJet | Matte Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (14 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 14 — better | 2 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 15.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 80 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | dn5.co, LLC | Héliographe, Inc |
Customer experience
SnailJet
Matte Viewer
In-app purchases
SnailJet
No in-app purchases
Matte Viewer
- Unlock Export$4.99
Questions
Is SnailJet free?
Is Matte Viewer free?
Which has better reviews, SnailJet or Matte Viewer?
Do SnailJet or Matte Viewer have ads?
Which is updated more often, SnailJet or Matte Viewer?
Other comparisons
