Marco Arment's Unforgetful: A Reminders App Built for Persistence Over Organization

Marco Arment released Unforgetful, a new iOS and Mac reminders app, on August 14, 2026. The app is available at unforgetful.app and is positioned as an alternative to Apple's Reminders, designed for procrastinators and people who struggle with task follow-through. Arment describes the concept as "Reminders for ADHD" (marco.org).

Unforgetful does not replace Apple's Reminders database. Instead, it reads from and writes to the same Reminders data store that users already have, so existing tasks, lists, and reminders captured through Siri carry over without any migration step. The setup requires turning off Apple Reminders notifications and letting Unforgetful handle all notification delivery instead (TechCrunch).

The core mechanic is persistence. Unforgetful's notifications always repeat until a task is actually completed and deleted. If a user misses or dismisses a notification, it comes back. Snooze intervals scale as the user continues to defer a task, but the app is designed to avoid overwhelming the user with multiple tasks surfacing at the same time. The system is built so that it is impossible to lose a task (marco.org).

Arment built Unforgetful to fix three specific problems he had with Apple Reminders: tasks that never notify when no time is specified, tasks that get lost when notifications are inadvertently dismissed, and poor snooze options. He has been candid about his own ADHD diagnosis, describing how he struggled through adolescence with forgetting homework and being told he was lazy. He relies on Siri for voice capture to create tasks across his computer, phone, car, and watch, but says he dislikes Apple Reminders' appearance, functionality, organization, and icon so much that he never opens the app directly. Calendar alarms, he says, changed his life; events without alarms do not happen for him (marco.org).

The app strips away organization tools entirely. There are no tags, views, modes, or other features for sorting or categorizing tasks. The design philosophy is that any task in the database will surface through notification persistence, so the organizational layer becomes unnecessary friction. Unforgetful ships with an in-app microphone for voice reminders and a full set of widgets for the Lock Screen and Control Center on iOS (TechCrunch).

9to5Mac described Unforgetful as built for people who struggle to keep reminders from slipping through the cracks and noted that it enhances Apple Reminders rather than replacing it (9to5Mac).

Pricing is $19.99 per year, with a one-month free trial. A single subscription covers all platforms. Arment co-hosts the independent app development podcast Under the Radar with David Smith and is the creator of Overcast and Instapaper; he previously served as Tumblr's chief technology officer (TechCrunch).

The architectural choice to build on top of Apple's Reminders database rather than create a standalone data store carries real trade-offs. By using Apple's existing infrastructure, Unforgetful inherits iCloud sync, Siri integration, and every existing Reminders deep link and shortcut. The trade-off is tight platform coupling: if Apple changes the Reminders database schema or its notification APIs in a future OS release, Unforgetful depends on Apple maintaining backward compatibility. This is a familiar calculation for independent iOS developers, and Arment has been vocal about platform risks before, having criticized apps that use unskippable in-app purchase subscriptions with no option to skip, cancel, or close (Mastodon).

The decision to ship no organization tools is a deliberate design constraint, not a missing feature set. Most task managers compete on the richness of their organizational layer — projects, contexts, priorities, custom views. Unforgetful inverts that. The only path to clearing a task is completion and deletion, and the notification engine ensures that path is unavoidable. Whether this approach sustains itself at scale, when a user has dozens of active tasks competing for attention, is an open question that the scaling snooze intervals are presumably designed to address.

The broader signal here is the market segment Arment is targeting. ADHD-focused software has grown from a niche into a recognizable category, and Unforgetful's positioning is explicit rather than implicit. Arment's own diagnosis gives the product a credibility that marketing alone cannot manufacture. The $19.99 annual price point sits comfortably within the indie iOS subscription range, and the one-month trial gives users enough time to determine whether the persistent-notification model actually changes their behavior or simply becomes nagging they learn to ignore.