Comparison

CheckFocus vs 25

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CheckFocus

Features
Read full description

CheckFocus is a focus timer app that helps you start your focus goals at a scheduled time and stay focused until the end. Whether you need to study, work, read, prepare for exams, complete projects, or manage focus challenges such as ADHD, CheckFocus helps you set your own focus schedule and reduce distractions during that time. Focus does not always happen just because we decide to focus. A quick notification check, opening social media out of habit, or switching apps can easily break the study or work time you planned. CheckFocus was created to help reduce those moments. When it is time to focus, you stay with one goal and keep your focus timer running until the session is complete. ā–  Scheduled focus goals With CheckFocus, you can set your focus goals by day of the week, specific date, start time, and end time. For example, you can create a routine to study from 7 AM to 8 AM every weekday, focus on work from 2 PM to 4 PM, or review for an exam at a specific time before test day. CheckFocus is not just about starting a timer. It helps you decide when to focus and follow through with your goal at the scheduled time. ā–  Forced focus timer The core feature of CheckFocus is helping you avoid distractions during your focus time. While the timer is running, if you close the app or move it to the background for more than 2 minutes to use something else on your phone, your focus goal may be marked as failed. This feature helps reduce phone distractions and encourages you to stay with the goal you set. Use CheckFocus when you need to study, work, read, prepare for exams, reduce smartphone distractions, or stay committed to a scheduled focus session. ā–  Solo focus mode When you want to focus quietly by yourself, you can use Solo Focus Mode. Set your goal, start the timer, and stay with the app until the session ends. If you keep your focus until the timer is complete, your goal can be completed successfully. Solo Focus Mode is useful for students, freelancers, office workers, readers, and anyone who wants to build a daily focus routine. ā–  Open focus rooms with users around the world If focusing alone is difficult, join an open focus room. In CheckFocus, multiple users can join the same room and work toward a shared focus goal. Users from around the world can participate, start at the scheduled time, and check whether others are staying focused. No chat is needed. Just knowing that others are focusing with you can help you stay committed and avoid giving up. You can create or join study rooms, work rooms, morning routine rooms, reading rooms, exam preparation rooms, and project focus rooms. ā–  Focus ranking and certificates When multiple users complete a focus goal together in an open room, you can check the ranking based on the results. The user who focused the most can reach 1st place, and a certificate can be issued to the 1st place user. CheckFocus is designed to turn focus sessions into motivation, achievement, and consistency. ā–  Recommended for people who: * Get distracted by their phone while studying * Want to protect focused work time * Need support managing focus challenges such as ADHD * Give up easily when studying or working alone * Want to build a scheduled daily routine * Want to focus with users around the world * Keep opening other apps after starting a timer * Want to record focus goals and feel a sense of achievement ā–  Main features * Focus goal scheduling * Day-of-week focus routines * Specific date focus goals * Start time and end time settings * Solo focus mode * Open focus room mode * Global user participation * Forced focus timer * Failure detection when the app is closed or kept in the background too long * Focus completion records * Open room ranking * Certificate for 1st place * Guest Login * Google Login * Apple Login Focus starts with a goal. Set the time. Stay focused. Complete your goal. Privacy Policy: https://luna-company.co.kr/checkfocus/privacy

About

25

Features
Read full description

Stay focused. Take real breaks. Get more done. 25-5 Timer is a simple, distraction-free work timer based on the classic technique of alternating focused work sessions with short breaks — with a longer break to recharge after every few sessions. FOCUS YOUR WAY • Fully customizable durations — work, short break, long break, and how many sessions before a long break • Save multiple presets and switch between them instantly • Large, easy-to-read timer with clear progress display STAY IN THE LOOP • Get notified the moment a session or break ends, with a different alert for short and long breaks • Choose from 10 built-in alert sounds, or import your own • Turn sound and vibration on or off independently • Keep your screen awake during a session with one toggle TRACK YOUR PROGRESS • See today's and yesterday's completed sessions at a glance • Browse your full history by day, and correct or clear records anytime ALWAYS WITH YOU ON APPLE WATCH • Your timer, presets, and alert settings sync automatically — no setup required • Start, pause, and check your progress right from your wrist • Glanceable Lock Screen and Dynamic Island display on iPhone A clean, focused tool to help you work better — one session at a time.

Screenshots

CheckFocus4 screens
254 screens

Verdict

The call

The clearest difference is update cadence: CheckFocus at daily against 25's every 2 weeks. CheckFocus also leads on iOS requirement (15.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CheckFocus ships an update daily, 25 every 2 weeks. The most recent releases landed on September 16, 2026 and September 25, 2026 respectively.

Scorecard2 real differences Ā· 4 level
CheckFocus versus 25: the parameters behind the verdict, then further details
ParameterCheckFocus25
PriceFreeFree
Update frequencyDaily — betterEvery 2 weeks
AdsYesYes
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.0 — better18.6
Further details — not scored
Size35 MB11 MB
Age rating4+4+
DeveloperHANG HEOLegal Prompt Inc.

In-app purchases

None

CheckFocus

No in-app purchases

None

25

No in-app purchases

Questions

Is CheckFocus free?
CheckFocus is free to download, with no in-app purchases.
Is 25 free?
25 is free to download, with no in-app purchases.
Do CheckFocus or 25 have ads?
Both CheckFocus and 25 show ads.
Which is updated more often, CheckFocus or 25?
CheckFocus ships an update daily, and 25 every 2 weeks. Most recently, CheckFocus was updated on September 16, 2026 and 25 on September 25, 2026.

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