Memorize vs Kaizen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Memorize
This app helps you memorize information using a spaced-repetition system. Easily add and sync your study materials across devices, track progress with detailed statistics, and review difficult items separately. It's designed for learning anything you need to remember.
- Spaced-repetition system
- Quick card adding
- iCloud sync across devices
- Share extension for content import
- Markdown support for formatting
- Detailed progress statistics
- Review difficult cards separately
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Memorize is a simple, yet powerful study app using the trusted spaced-repetition system. Use Memorize to study vocabulary, new languages, skills, your kids birthdays', or really anything you want to remember. Also available on the Mac! - Quick add. Add cards in a jiffy from the Dashboard. - iCloud sync. Study cards on the fly on your phone, or in your living room on the iPad. - Share extension. Add to Flash Jack from any other app: Safari, Books, Kindle, ... - Markdown support. We support basic editing and formatting: bold, italics, code blocks, lists. - Amazing Stats. See your progress in a Streaks view. Track your responses, and more. - Review section. Besides regular study sessions, you can review the difficult cards separately. - Lots more to come. We are just getting started! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sakunlabs.com/flashjack-privacy
Kaizen
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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 public rooms, or private ones with an 8-character code • See who's focusing, on a break, or paused, with live countdowns • No camera or microphone, just quiet company • Premium: create your own public or private rooms (2 to 50 people), manage them as host, 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
Screenshots
Verdict
The clearest difference is device support: Memorize at 4 against Kaizen's 2. On price, update cadence, ads and in-app purchases 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. Memorize sells 1 in-app purchase, starting at $0.99 per month and Kaizen sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Memorize ships an update fortnightly, Kaizen every 2 weeks. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.
| Parameter | Memorize | Kaizen |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 27 MB | 68 MB |
| Age rating | 4+ | 4+ |
| Developer | Raheel Ahmad | MK Development |
In-app purchases
Memorize
- Full Unlock$0.991 Month
Kaizen
- Premium (monthly)14 Days trial$3.991 Month
- Premium (yearly)14 Days trial$44.991 Year









