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Umbrio

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…

App icon

Umbrio app icon

Direct link: https://obelisk.club/apps/darkroomprinttimer/icon.png

Theme color: #F0EEE9

Boilerplate description

Use any portion freely. For coverage assistance, email below.

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

Key features

  • Instant countdown timer — tap to start, stop anywhere on screen

  • Quick presets: 5 s, 8 s, 10 s, 15 s, 20 s, 30 s always one tap away

  • Save unlimited named exposure times with Pro

  • Test strip mode guides each incremental strip precisely (Pro)

  • f-stop calculator: convert stops to seconds instantly (Pro)

Download links

Founder quote

“Umbriois built around one principle: your data stays on your device. We don't want it, we don't store it, and we don't need it to make the app work. Everything that can run locally, does.”
— Peter Zhang, solo developer, Obelisk Club

About Obelisk Club

Obelisk Club is a portfolio of focused, local-first Mac and iOS productivity apps built by a solo developer. The portfolio includes 13 apps spanning note-taking, screenshots, photo workflow, beverage tracking, file compression, and more — all sharing a single principle: software that works without an account, without a cloud, and without a subscription.

Press contact

obeliskclubclub@gmail.com

https://obelisk.club

Happy to share a complimentary Pro promo code, schedule a Q&A, or provide additional materials. Typical response within 24 hours.

Quick facts

App name
Umbrio
Maker
Peter Zhang · Obelisk Club
Theme color
#F0EEE9
Contact
obeliskclubclub@gmail.com