DisparaTimer
Angel David Rodriguez
DisparaTimer is a mobile app that, when connected to a Raspberry Pico W/WH, can control the exposure time of a photographic enlarger using a power relay. The physical setup is inexpensive and easy to assemble.
In-app purchases in United States
Items currently visible on Apple’s public App Store page. This may not be the complete App Store Connect catalog.
Source: Apple public App Store page · Publicly visible items only · Checked Aug 4, 2026
About DisparaTimerStorefront description supplied by Apple.
DisparaTimer is a mobile app that, when connected to a Raspberry Pico W/WH, can control the exposure time of a photographic enlarger using a power relay. The physical setup is inexpensive and easy to assemble.
DisparaTimer has two operation modes. The first is a traditional timer mode, where you set a specific time for each exposure. The second is designed for creating test strips with constant fractional step increments over a base time.
On iPad (iPadOS 17 and later), DisparaTimer includes a landscape-only notes panel that lets you add photos or images of your test strips and make handwritten or visual annotations directly on them.
Frequently asked questions
Quick answers based on the latest observed App Store data.
How much does DisparaTimer cost in United States?
The latest observed download price is Free. Open the official App Store link to confirm the current checkout price.
Does DisparaTimer have in-app purchases?
Apple's public page currently shows 0 purchase items in this storefront. The public list may be incomplete.