Umbrio
Darkroom Print Timer
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Umbrio is the precision darkroom print timer built for analog photographers who demand reliability in the dark. Set any exposure from 1 to 999 seconds, recall saved presets instantly, and never lose a print to a missed countdown. No account, no network, no distractions — just a fast, accurate timer that works the moment you open it.
Upgrade to Pro to unlock the full toolkit: guided test strip sequences that walk you through each incremental exposure step-by-step, an f-stop calculator that instantly converts any stop adjustment to the correct new exposure time, and unlimited custom preset slots so every paper, enlarger, and workflow has its own saved time.
Umbrio is fully local-first — your data never leaves your device. There are no subscriptions, no ads, and no accounts. One app, one purpose, done right.
Terms of Use: https://obelisk.club/darkroomprinttimer/terms
Privacy Policy: https://obelisk.club/darkroomprinttimer/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Fixed minor issues and improved overall stability.
The developer, 永 张, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 永 张
- Size
- 717.8 KB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Umbrio Pro $4.99
- Copyright
- Copyright © 2026 Peter Zhang. All rights reserved.