Focus Timer vs One & Three
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Focus Timer
Enhance focus and build productive habits with a tool that integrates a calendar, timer, and app blocker. Plan your day, track your time, and block distractions to reduce mental load and improve presence.
- Integrates with Apple Calendar
- Creates focus timers from events
- Standalone focus timer option
- App blocking (scheduled and spontaneous)
- Supports ADHD and neurodivergent minds
- Reduces mental load
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Studious is designed to help you stay focused and build studious habits by combining your calendar, to-do list and a focus timer in a single app. 1 – Plan your day Studious connects to Apple Calendar, Apple Reminders and Google Calendar to help you stay organized easily. 2 – Stay focused Use the Studious timer to help you focus during events and block distracting apps. Stay in control of your focus session by adding more time or by ending early, Studious will automatically update your schedule for you. 3 – Get insights Understand how you spend your time by comparing your screen time to your focus time, and set limits on distracting apps. Using Studious can help you: → Create structure to support ADHD and neurodivergent minds → Work or study with greater sustained focus → Reduce mental load and decision fatigue Privacy Policy: https://getstudious.app/privacy Terms of Service: https://getstudious.app/terms
One & Three
This productivity app helps you focus on your most important tasks with a simple, minimalist design. It limits your daily focus to one main task and up to three supporting tasks, reducing overwhelm and decision fatigue.
- Focus on one main task daily
- Add up to three supporting tasks
- Minimalist and calming design
- Quick entry with no distractions
- Simple gestures and intuitive flow
- Reduces decision fatigue
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Stay focused. Feel accomplished. One & Three is a radically simple to-do list app designed to work with your brain—not against it. Whether you’re neurodivergent, easily distracted, or just overwhelmed by endless lists, this app helps you focus on what really matters. How it works: • Choose One main task for the day • Add up to Three supporting tasks • That’s it—no complicated folders, categories, or endless scrolling This structure helps reduce decision fatigue and fight off the “too much to do” spiral. Built with ADHD brains in mind: • Minimal, calming design • Quick entry with no distractions • Simple gestures and intuitive flow We believe productivity doesn’t have to be overwhelming. One & Three is a small app with a big heart—designed to help you get through the day, one task at a time. Support the developer: One & Three will always be free. If you’d like to support the app, you can make a one-time purchase in the app to keep it going and to support the developer.
Screenshots
Verdict
The clearest difference is rating: One & Three at 5.0 against Focus Timer's 4.3. One & Three also leads on update cadence (daily vs fortnightly) and review sentiment (100% vs 80%). Focus Timer's advantage is ratings volume (17 vs 5). On price, ads, in-app purchases and monetization model 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. Focus Timer sells 5 in-app purchases, starting at $2.99 per month and One & Three sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
One & Three holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 17 and 5 respectively. Written reviews point the same way: 80% of Focus Timer's written reviews are positive against 100% of One & Three's.
Focus Timer ships an update fortnightly, One & Three daily. Both last shipped on October 4, 2026.
| Parameter | Focus Timer | One & Three |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (17 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 17 — better | 5 |
| Update frequency | Fortnightly | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 26.0 | 17.6 — better |
| Further details — not scored | ||
| Size | 39 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Florent Perillat | Scott Curry |
Customer experience
Focus Timer
One & Three
In-app purchases
Focus Timer
- Monthly$2.991 Month
- Monthly$4.991 Month
- Yearly7 Days trial$19.991 Year
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- Yearly7 Days trial$29.991 Year
- Lifetime$49.99
One & Three
- Small$1.99
- Medium$4.99
- Large$9.99
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- Extra-Large$24.99
Questions
Is Focus Timer free?
Is One & Three free?
Which has better reviews, Focus Timer or One & Three?
Do Focus Timer or One & Three have ads?
Which is updated more often, Focus Timer or One & Three?
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