
Infuse
In-App PurchasesDuo-native
Your own library, widescreen in a pocket.
On the Duo: Duo-native. Its maker's blog (4 October) shows the register beside a risk's detail on the open Duo. Version 2.13 is finished but held back until the Duo goes on sale. Checked October 7, 2026.
App Store data as of October 7, 2026

Teams who need one shared register: it is a personal tool for your own projects.
A risk register for projects: capture risks by category, probability and impact, from templates if you like, and the app scores and prioritises them. A risk matrix shows what is on fire, and every risk keeps a history of how it has changed. For Mac, iPad and iPhone, with widgets and Siri shortcuts.
Version 2.13 adds the iPhone Duo, with the overview and a risk's detail side by side when the phone opens. Its maker has finished it but is holding it back until the Duo goes on sale.