OneTask vs Penna
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OneTask
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Stop juggling endless lists. Focus on one thing at a time. OneTask is an ADHD-friendly, minimalist daily planner that shows you the single most important task right now. Everything else waits its turn. No overwhelm. No guilt. Just clarity. Today only. No future dates. You can't push tasks to tomorrow. If it matters, do it today. This one rule breaks procrastination at the root. Built for ADHD and neurodivergent minds. Long to-do lists freeze you; one clear task gets you moving. OneTask removes extra choices, deadline pile-ups, and visual noise - the exact things that make traditional planners fail for ADHD brains. Private by design. No accounts. No sign-up. No distractions. Just open the app and start. Your data stays on your device - always. End your day with a streak. Every night, see a clean summary of what you completed. Build a daily habit with weekly and monthly reports that show your real routine. Free forever. 3 tasks a day, no catch. Most people don't need more than three meaningful tasks. Add your three and go. KEY FEATURES - Daily agenda - today's tasks only, zero clutter - Habit tracker - streak tracking to stay consistent - Smart reminder - notifies you at the right time - Home screen widget - no need to open the app - Schedule summary - weekly & monthly reports - Works offline - no account, no sign-up - Dark mode & 35 languages supported - Your data stays on device - always private Research shows multitasking reduces productivity by up to 40%. OneTask solves this at the root. Minimal design. Maximum focus. Privacy Policy: https://erkarslan.github.io/privacy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Penna
This app visualizes your day as a board with time estimates and countdowns. It uses on-device AI to break down tasks and organize your thoughts privately, with no account or data collection. Features include visual planning, smart input, and focus timers.
- Visual day board with time estimates
- On-device AI for task breakdown
- Private, offline planning
- Smart text input for scheduling
- Countdown timer and widgets
- Brain Dump for quick thoughts
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Penna is the ADHD planner that shows you time: your day as a visual board, a countdown for the task you're on, and AI that runs on your iPhone. 100% offline, no account, no one watching. SEE TIME (new in 1.4) • Estimated duration on every tile — 15, 30, 45, 60 min or your own • A countdown ring on the task you're doing right now • Countdown widget on the Home and Lock Screen: what's now, what's next, how long is left • Morning check-in in 3 taps: your energy today → a day that fits it • Start with a free trial ON-DEVICE AI (Apple Intelligence) • Magic Breakdown — a big scary task becomes 3–7 tiny first steps, each under 15 minutes • Organize — your Brain Dump sorts itself into tiles with dates and tags, you approve every change • Smart input understands "call mom tomorrow evening" — in English and Russian AI runs entirely on your iPhone. No cloud, no account — Data Not Collected stays true. Requires iPhone 15 Pro or newer with Apple Intelligence; everything else works on any iPhone with iOS 18. Most planners want your email and your data. Penna wants neither. Everything lives on your device. Your backups are encrypted and yours to keep. PRIVATE BY DESIGN • 100% offline — no account, no servers, no ads, no trackers • Data Not Collected — nothing leaves your device • Face ID lock on individual notes • AES-256 encrypted backups • Export to Markdown, JSON, PDF or calendar (.ics) PLAN VISUALLY • Snap-grid board — arrange note tiles in any cell, like icons on a home screen • Drag tiles between days on a collapsible week/month calendar • Timeline view for hour-by-hour day blocking CAPTURE THE WAY YOU THINK • Brain Dump — drop a thought in one tap, schedule it later • Smart text input — type “call mom tomorrow 6pm” and Penna sets the day and reminder • Checklists, photos, file attachments, tags, 10 colors STAY ON TRACK • Reminders with repeat (daily/weekly/monthly) and snooze • Habits grid with daily streak · Pomodoro focus timer • Home-screen & Lock Screen widget · Share extension PENNA PRO • Unlimited notes, Brain Dump and attachments • Repeating reminders and calendar events on your board • iCloud Sync — your data stays in YOUR private iCloud; we never see it Penna Pro: a yearly subscription, a weekly subscription with a 3-day free trial, or a one-time lifetime unlock. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel them in Settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://telegra.ph/Penna--Privacy-Policy-06-07
Screenshots
Verdict
The clearest difference is update cadence: Penna at every 4 days against OneTask's fortnightly. OneTask's advantage is iOS requirement (16.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. OneTask sells 2 in-app purchases, starting at $0.99 per month and Penna sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
OneTask ships an update fortnightly, Penna every 4 days. The most recent releases landed on October 28, 2026 and November 5, 2026 respectively.
| Parameter | OneTask | Penna |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Fortnightly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 39 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | ARZU ARSLAN | NTSAUTOSIGA LLC |
In-app purchases
OneTask
- One Task Pro - Monthly$0.991 Month
- One Task Pro - Yearly$2.991 Year
Penna
- Weekly3 Days trial$4.997 Days
- Yearly$29.991 Year
- Penna Pro$39.99









