Comparison

ZenMind Zazen Meditation Timer vs Stack

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

Head to head
About

ZenMind Zazen Meditation Timer

Features
Read full description

Just sit. Traditional bells, walking meditation (kinhin), local records, and optional ZenMind Pro. ZenMind is a dedicated zazen timer, not another generic mindfulness app. Unlike general meditation timers, ZenMind recreates the traditional flow of Japanese zen practice: entering stillness, kinhin, returning to sitting, and release. The bell sequence follows conventions used in zen practice. โ–  Traditional bell sequence Three strikes begin zazen. Kinhin and the return to sitting have their own signals. The final bell releases the session. ZenMind is built for the shape of zazen, not only a start-and-stop timer. Bell cues and ambient sound continue even when the screen is locked. โ–  Zazen and kinhin Sit in zazen alone, or combine zazen with kinhin, the walking meditation practiced between periods of sitting. โ–  Begin before you sit A quiet pre-session sequence helps settle body, breath, and mind. No loud countdown. No rush into practice. โ–  Seven-step posture guide Learn the basics of posture, breathing, gaze, and hand position through a concise seven-step guide. The guide includes full lotus, half lotus, seiza, and chair sitting. โ–  Nothing you do not need No streak pressure. No badges. No social feed. No crowded dashboard. The interface is made from ink-black space, white-sand text, and slow fades so the sitting itself stays central. โ–  On-device records. Optional ZenMind Pro. Every practice record lives only on your device. No server. No account. ZenMind Pro is optional and removes ads from records and settings. iOS may ask for tracking permission for ads, and ZenMind still works if you deny it. โ–  For those who - Want a quiet timer after using Calm, Headspace, or other guided meditation apps - Prefer unguided zazen and silent meditation - Practice in a Soto, Rinzai, or Japanese zen context - Want kinhin and traditional bells in the same timer - Care about privacy and a fully local practice record -- ZenMind's descriptions of zazen draw on traditional practice and do not represent the official view of any specific zen school. If you have a medical condition, please consult your physician before sitting. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

Stack

Features
Read full description

Stack is the supplement tracker that finally looks as good as the rest of your day. Track your vitamins, supplements and medications, get reminders so you never miss a dose, and build a streak that keeps you consistent. No clutter. No noise. Just a calm, beautiful daily ritual that takes seconds. BUILD YOUR STACK Add anything you take in seconds with smart suggestions from a built-in library of vitamins, minerals, supplements and common medications. Everything is organised automatically by time of day. NEVER MISS A DOSE Set gentle reminders around your routine. Mark each one taken with a single tap and watch your day fill in. Morning, midday, evening or night, Stack keeps you on track. KEEP YOUR STREAK Consistency is what actually delivers results. Stack counts your daily streak and celebrates the milestones that keep the habit alive. MEET YOUR ADVISOR Unlock a personal supplement advisor that knows your goals, diet and routine. Get a full review of your stack, spot gaps and interactions, and fine-tune your timing and doses. Ask anything in plain language, and go deeper into the science whenever you want. Add any recommendation to your stack with one tap. PRIVATE BY DESIGN Your data stays on your device. No accounts, no ads, no tracking, ever. Stack Pro unlocks the Advisor with a 7-day free trial, then a simple subscription. Cancel anytime. Stack provides general information about supplements and nutrition. It is not a substitute for professional medical advice, diagnosis or treatment. Always consult a qualified healthcare professional before changing your supplement or medication routine. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ZenMind Zazen Meditation Timer4 screens
Stack4 screens

Verdict

The call

The clearest difference is in-app purchases: ZenMind Zazen Meditation Timer at none against Stack's 2. Stack's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Stack sells 2 in-app purchases, starting at $5.99 per month. ZenMind Zazen Meditation Timer asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

Scorecard2 real differences ยท 4 level
ZenMind Zazen Meditation Timer versus Stack: the parameters behind the verdict, then further details
ParameterZenMind Zazen Meditation TimerStack
PriceFreeFree
Update frequencyEvery 3 daysEvery 3 days
AdsYesNo โ€” better
In-app purchasesNo โ€” betterYes
DevicesiPhoneiPhone
Requires iOS16.0 โ€” better17.0
Further details โ€” not scored
Size60 MB9 MB
Age rating4+4+
DeveloperKengo YamamotoHenry Hinge

In-app purchases

None

ZenMind Zazen Meditation Timer

No in-app purchases

2 purchases

Stack

Subscriptions2
  • Stack Pro7 Days trial$5.991 Month
  • Stack Pro7 Days trial$39.991 Year

Questions

Is ZenMind Zazen Meditation Timer free?
ZenMind Zazen Meditation Timer is free to download, with no in-app purchases.
Is Stack free?
Stack is free to download, with in-app purchases available.
Do ZenMind Zazen Meditation Timer or Stack have ads?
ZenMind Zazen Meditation Timer shows ads; Stack does not.
Which is updated more often, ZenMind Zazen Meditation Timer or Stack?
ZenMind Zazen Meditation Timer ships an update every 3 days, and Stack every 3 days. Most recently, ZenMind Zazen Meditation Timer was updated on October 31, 2026 and Stack on November 10, 2026.

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