Comparison

Kaizen vs Lock In Together

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

Head to head
About

Kaizen

Features
Read full description

Kaizen is a focus timer that blocks your distracting apps, tracks your habits, and lets you study alongside others in live focus rooms. Start a session and the apps you picked stay blocked until your break. Free to use, with no ads. Premium features are marked below. POMODORO TIMER & STOPWATCH • Presets: Classic (25/5/15), Quick (15/3/10), Extended (50/10/30), Long Focus (90/15/30), or your own • Focus 5 to 180 minutes, short breaks 1 to 60, long breaks 5 to 120 • Stopwatch: count up with no fixed end and finish when you're ready • Auto-start runs sessions back to back while Kaizen is open, up to your long break • Keeps time in the background and notifies you when a session or break ends • Fullscreen mode that shows only the timer • Tag each session (Work, Study, and more) to see where your focus goes APP BLOCKER Kaizen uses Apple's Screen Time to block the apps and websites you choose: • Your apps are blocked during focus sessions and open again on your break • Block now: block them right away, until you turn it off • The block stays in place even if Kaizen is closed • An optional "Open anyway" button: you set how often, how long to wait, and for how long • Block up to 3 apps or websites free • Premium: up to 50 apps, plus Strict mode (stays blocked when you pause) and Locked mode (after the first minute the session can't be skipped or ended, with one emergency end a week) Your choices stay on your device. Kaizen can't see which apps you picked. HABIT TRACKER • Check-off habits, or timed habits your focus sessions count toward • Schedules: daily, specific weekdays, or a number of times per week • Forgiving streaks: a skipped day doesn't break them • A consistency score and trend chart for every habit • Backdate any past day and keep your full history • Reminders that follow each habit's schedule • Up to 5 active habits free, unlimited with Premium FOCUS ROOMS Stay on task next to other people, without a video call: • Join any room free, or host a private one and invite up to 3 friends with a link • See who's focusing, on a break, or paused, with live timers • No camera or microphone, just quiet company • Premium: host public or bigger rooms (up to 50 people), and share the task you're working on Many people with ADHD use this kind of body doubling to get started and keep going. TASKS • Jot a task down in one line now, plan the details later • An unlimited inbox, so capturing a thought never hits a limit • Priorities, due dates, subtasks, time estimates, and reminders • Pick a task before a session and your focus time counts toward it • Today, Tomorrow, and Overdue badges keep deadlines in view • Up to 7 planned tasks free, unlimited with Premium THEMES & FOCUS MUSIC • 60+ backgrounds across Lofi, Nature, City, Cozy, Space, and Minimal, including animated ones • Lo-fi, ambient, nature, white noise, and classical tracks, saved for offline listening • Mute music on your breaks • Premium: every theme, the full music library, and your own photo as the background STATISTICS & STREAKS • Daily, weekly, and monthly focus totals • Charts for focus over time, by hour, by weekday, by tag, and by session type • Session history showing which tasks and habits each session counted toward • Re-tag or delete any past session • A daily focus streak • Premium: yearly and all-time statistics MADE FOR • Students studying for their exams • Remote workers and freelancers who need time for deep work • People with ADHD who focus better with structure and company • Anyone who reaches for their phone when they should be focusing WORKS EVERYWHERE Use Kaizen on iPhone, iPad, your computer, or the web. Your tasks, habits, and stats sync across all of them. Start a focus session, block your distracting apps, and see how much more you get done. Terms of Use (EULA): https://my-kaizen.com/eula Privacy Policy: https://my-kaizen.com/privacy Terms & Conditions: https://my-kaizen.com/terms Questions? Reach us at support@my-kaizen.com

About

Lock In Together

Features
Read full description

Lock In with friends. Focus together, Block Distractions. Lock In Together helps you protect focus time with people who matter. Create a shared focus session, invite friends, and wait until everyone is ready. The host starts the session, and each participant follows the same countdown. FOCUS YOUR WAY • Choose apps to block during a timed solo session. • Start immediately as a guest, then create or link an account to preserve your guest streak and history. • Review completed sessions, daily totals, calendar history, and streaks. FOCUS TOGETHER • Find friends by nickname and tag. • Create a session, invite friends, or join with a session code. • Mark yourself ready before the host starts. • See who completed the shared session. SHARE THE MOMENT Create a completion card, add an optional message, save it as an image, or share it through the system share sheet. DEVICE PERMISSIONS On iPhone and iPad, app blocking uses Apple Screen Time and the system app picker. Blocking behavior can vary by device and operating-system settings. Free to download. Privacy Policy: https://lockintogether.com/privacy.html Terms of Service: https://lockintogether.com/terms.html

Screenshots

Kaizen4 screens
Lock In Together4 screens

Verdict

The call

The clearest difference is ads: Kaizen at none against Lock In Together's shown. Lock In Together's advantage is update cadence (every 5 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement 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. Kaizen sells 2 in-app purchases, starting at $3.99 per month and Lock In Together sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Kaizen ships an update every 2 weeks, Lock In Together every 5 days. The most recent releases landed on October 16, 2026 and October 19, 2026 respectively.

Scorecard2 real differences Ā· 4 level
Kaizen versus Lock In Together: the parameters behind the verdict, then further details
ParameterKaizenLock In Together
PriceFreeFree
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNo — betterYes
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.416.0 — better
Further details — not scored
Size68 MB56 MB
Age rating4+4+
DeveloperMK DevelopmentSolbeen So

In-app purchases

2 purchases

Kaizen

Subscriptions2
  • Premium (monthly)14 Days trial$3.991 Month
  • Premium (yearly)14 Days trial$44.991 Year
2 purchases

Lock In Together

Subscriptions2
  • Premium Monthly$3.991 Month
  • Premium Annual$39.991 Year

Questions

Is Kaizen free?
Kaizen is free to download, with in-app purchases available.
Is Lock In Together free?
Lock In Together is free to download, with in-app purchases available.
Do Kaizen or Lock In Together have ads?
Lock In Together shows ads; Kaizen does not.
Which is updated more often, Kaizen or Lock In Together?
Kaizen ships an update every 2 weeks, and Lock In Together every 5 days. Most recently, Kaizen was updated on October 16, 2026 and Lock In Together on October 19, 2026.

Other comparisons