
NotePlan
SubscriptionDuo-native
Notes, tasks and your calendar side by side
On the Duo: Duo-native. Version 8.1.2 (29 October) made iA Writer ready for iPhone Duo, its release notes say, after iA's blog post of 20 October; iA has only shown it partly folded. Checked November 5, 2026.
App Store data as of November 5, 2026

It writes in plain-text Markdown, so anyone who wants a word processor with visible rich formatting will find it spare.
iA Writer is a writing app built around plain text and Markdown. Focus Mode dims all but the current sentence or paragraph, and a style check can flag superfluous adjectives, weak verbs and repeated nouns. You write first and preview in HTML later, with links, images, tables and other text files embedded in plain text. Documents from different cloud services can be searched and swapped quickly, the command keyboard can be rearranged, and templates export to WordPress, Medium, HTML, Word or PDF. Version 8.1.2 added spreadsheet-style table editing and Markdown alerts.
iA wrote about the Duo in its blog post "It takes two to Duo" (20 October), and version 8.1.2 (29 October) lists iPhone Duo support: Writer adapts to each pose and keeps its controls on the right, within reach of your thumb. iA has only shown Writer partly folded, so the picture here is its iPad layout.