PenTimer vs Just Do Three
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PenTimer
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PenTimer is a simple focus timer built around the classic 25-minute work and 5-minute break rhythm. Start a session, focus on your task, and stop whenever you’re done. Each session is saved using its real start and end time and stored as an event in Apple Calendar. These sessions are also shown as clear time blocks on a daily timeline, similar to how events appear in the Calendar app. There are no complex settings, no accounts, and no distractions. PenTimer is designed to stay out of your way and help you see how you actually spend your focused time throughout the day. Features Fixed 25-minute work sessions and 5-minute breaks Stop early or let the timer finish naturally Sessions saved as events in Apple Calendar Real start and end times recorded Daily timeline view with clear time blocks No accounts, no tracking, no ads PenTimer works entirely on your device and respects your privacy. Focus, one session at a time.
Just Do Three
Focus on what truly matters by selecting three key priorities for the day. Once these are completed, the day is considered a success. This app offers a simple, clear, and achievable approach to productivity without overwhelming task management features.
- Select three daily priorities
- Focus on task completion
- Track progress and build momentum
- Schedule tasks up to a week ahead
- Import tasks from a file
- Productivity analytics
- Recurring tasks
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Trying to do everything means finishing nothing. Just Do Three helps you focus on what actually matters today. Instead of managing an overwhelming list of tasks, you choose three priorities for the day. That’s it. When those three things are done, the day is a success. Simple. Clear. Achievable. Just Do Three is designed for people who want a lightweight productivity tool without complicated systems, subscriptions, or endless task management features. How it works • Pick the three most important things you want to accomplish today • Focus on completing those tasks • Track your progress and build momentum Premium Features Upgrade to unlock powerful insights and planning tools: • Schedule tasks up to a week ahead • Import tasks from a file • Day, week, month, and year productivity analytics • Recurring weekly and monthly tasks • Stretch goal tracking • “Most Avoided Tasks” insights • Add tasks from a paper list or photo via OCR. • Add tasks to your iPhone calendar as tasks or calendar entries • Have a "work list" and a "personal list" and track them separately. • Export your list as a csv for use elsewhere. Built for simplicity • No clutter • No complicated productivity systems • No endless lists Just pick three things. And do them.
Screenshots
Verdict
PenTimer and Just Do Three are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | PenTimer | Just Do Three |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Freemium |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.5 | 17.0 — better |
| Further details — not scored | ||
| Size | 0 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | EMIRHAN SIMSEK | Todd Vallie |
In-app purchases
PenTimer
No in-app purchases
Just Do Three
No in-app purchases









