Private Offline ADHD Apps: What to Check

TL;DR

• A private ADHD app should store every piece of data locally in your browser — no accounts, no cloud sync, no tracking scripts.
• Check for real offline capability: a service worker that caches the app shell, not just a website that "kinda works without Wi-Fi."
• Confirm you can export your own data and that the app never sends anything to a remote server.

Why privacy matters for ADHD planning apps

People with ADHD use planning tools during their most personal moments — low-energy mornings, focus sessions, late-night brain dumps. The CDC notes that ADHD symptoms "can cause difficulty at work, at home, or with relationships" and that adults may struggle with staying organized. A planning app for these moments should not also be a surveillance tool.

Most mainstream planners require accounts, sync to cloud servers, and run analytics. For people who want a tool that respects boundaries, offline-first apps are a real alternative.

The six-point checklist for a private ADHD app

When evaluating an app that claims to be private and offline, verify each of these:

1. No login required

Open the app URL. If the first screen asks for email, phone, or social login, the app is not private-first. A genuine local-only app starts working immediately — type your name, pick preferences, done. Tiimo requires account setup before you can add tasks (Tiimo: How to start planning); Structured needs an account for sync and calendar (Structured.app). Both serve real users, but they aren't private-first.

2. Data stored only in your browser

The standard for local-only apps is localStorage — the browser's key-value store that lives entirely on your device. No data leaves your machine. A versioned storage layer with migration handles app updates without wiping data.

Check: Open DevTools (F12) → Application → Local Storage. Look for keys prefixed with the app's name and confirm there are no outgoing network requests during use. TinyStepDaily stores all tasks, routines, and energy levels under numa-* keys, with versioned migration so upgrades don't lose data (TinyStepDaily README). No login, no server contact.

3. Real offline capability (service worker)

Many web apps claim "offline support" but only cache a few files. A true offline ADHD app registers a service worker with a cache-first strategy, caches the app shell (HTML, JS, CSS) on first visit, and works in airplane mode after that. The MDN PWA docs confirm PWAs "operate while offline" using service workers and the Cache API.

TinyStepDaily's service worker pre-caches /, /index.html, and /manifest.webmanifest on install and serves cached assets before the network (TinyStepDaily). Every screen loads without internet after the first visit.

4. No tracking or analytics

Open DevTools → Network, use the app for a few minutes, and look for requests to google-analytics.com, firebase, mixpanel, or pixel trackers. If the tab stays quiet except for your own domain, the app is tracking-free. Third-party requests mean data is leaving your device regardless of the privacy policy.

5. Data export and portability

If you can't export your data, you're locked in. Look for a JSON export that downloads all your data, an import to restore it, and docs confirming the export is complete. TinyStepDaily has exportData() and importData() that serialize every localStorage entry to JSON — the README states "the user owns their data and can move it between browsers" (TinyStepDaily README).

6. No hidden accounts or background sync

Some apps appear account-free but quietly sync. Warnings: the app behaves differently across devices, a buried "sign out" option, or requests for a device identifier. A truly offline app behaves identically with or without internet. Everything it needs lives in the browser.

The TinyStepDaily flow: what a private app actually does

Here's the confirmed flow visible in the TinyStepDaily product:

Welcome: Pick a language, enter a name, choose a support stack — Start (breakdown + ideas), Focus (timer + reminders), Organize (brain dump + routines), or Regulate (breathing + review). Each wires a coherent kit without showing everything at once (TinyStepDaily).

Today: A greeting with Tiny, then an energy check-in (Low, Medium, Good). The app surfaces your single next step with a play button, shows up to six remaining tasks sorted by time, and ends with your enabled tools as quick cards (TinyStepDaily).

Focus: Pick a task (or none), choose a preset (15, 25, 45, or 60 minutes), press play. A progress ring fills and turns gold near the end. A "distraction parking lot" captures intrusive thoughts into your inbox without leaving the timer (TinyStepDaily).

Plan: Browse tasks by day with a mini calendar, add recurring items, manage step-by-step routines, and capture ideas in a pressure-free inbox (TinyStepDaily).

You: Level, streak, achievements, weekly chart, year heatmap — all local, no social pressure (TinyStepDaily). One decision per screen.

See also: how to start a task with ADHD, ADHD focus timer techniques, and ADHD task organization.

How to verify privacy yourself

When a private app isn't the right choice

Offline apps trade cloud sync for local control. Need the same plan on phone and laptop? Tiimo or Structured may fit better — with an account. The NHS notes that "keeping one central place for tasks and reminders can make things more manageable" (Leicestershire Partnership NHS Trust). For many, avoiding account friction outweighs device switching.

Common errors and fixes

FAQ

What is a private ADHD app? It stores all data locally in your browser's localStorage — never sent to a cloud server. No login, no account, no tracking. The CDC describes ADHD as a neurodevelopmental disorder affecting daily tasks and organization (CDC: ADHD in Adults).

Can an offline app replace a full planner? If you need tasks, routines, and focus timers — yes, all locally. Cross-device sync requires a cloud planner like Structured or Tiimo, with an account.

Is localStorage safe? It stays on your device, clears only when you wipe browser data. Not encrypted — don't store passwords. For tasks and focus history, it's appropriate and standard.

How do I back up? Use the export function. It downloads a JSON file with your tasks, routines, and progress. Restore with import on any browser.

Do these apps work on phones? Yes, as progressive web apps (PWAs). TinyStepDaily installs on iOS and Android. The NHS recommends timer-based strategies for ADHD (NHS ADHD strategies), which offline PWAs support.

What about focus sessions? TinyStepDaily's Focus screen has a countdown timer (15, 25, 45, or 60 min), ambient sound, and a distraction parking lot. All data stays on your device.

Sources

Disclaimer: This article discusses ADHD symptoms and planning strategies based on institutional health sources. TinyStepDaily is a planning and focus companion app, not a diagnostic tool, treatment, medical device, or replacement for professional care. It does not diagnose ADHD, recommend medication, or claim to improve symptoms. Always consult qualified healthcare providers for diagnosis, treatment, or medication questions.

TinyStepDaily is a free, 100% local companion for ADHD brains. No login, no tracking, no cloud — just one tiny step at a time. Try it at tinystepdaily.com.