Comparison

DayZen vs SinceWhen

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

Head to head
About

DayZen

This app transforms your schedule into a visual 24-hour clock, making time concrete and manageable. It's designed to combat time blindness and anxiety for neurodivergent individuals by visualizing tasks as colored arcs on a clock face.

Highlights
  • Visual 24-hour clock schedule
  • Task arcs and time blocking
  • ADHD-friendly interface
  • Live Activities & Dynamic Island
  • Immersive Focus Mode
  • Calendar integration
  • Home Screen widgets
Features
Read full description

STOP LYING TO YOUR CALENDAR. To-do lists feel infinite. If you have ADHD, lists are just a source of anxiety. You keep adding tasks, but reality keeps disagreeing. You schedule 10 pounds of work into a 5-pound day, and then feel guilty when you don’t finish. DayZen: Visual Time Planner transforms your daily schedule from a stressful list into a logical 24-hour visual clock. Tasks become colored arcs. When the circle fills, it’s full. No more pretending a 3-hour project fits into a 30-minute gap. It is the ADHD planner that finally works. Design your time. See your visual schedule. Find your focus. WHAT’S NEW IN VERSION 2.0 We’ve rebuilt DayZen to be the ultimate time management companion for the neurodivergent mind. - Live Activities & Dynamic Island: Track your active focus time, remaining duration, and progress without unlocking your phone. - Immersive Focus Mode: A full-screen focus timer designed to eliminate ADHD distractions, complete with haptic feedback. - Deep Insights: Analyze your time usage patterns with new interactive charts for daily, weekly, and yearly trends. WHY THIS IS THE ULTIMATE ADHD PLANNER For the ADHD brain, time is abstract. DayZen makes time concrete. CONQUER ADHD TIME BLINDNESS Don't just read your schedule: see your time. DayZen acts as a visual timer and planner to fix time blindness. Drag and drop tasks onto the clock face and resize them with a finger. Conflicts glow red instantly so you can fix your daily routine before the day starts. INTUITIVE TIME BLOCKING Forget rigid spreadsheets that kill dopamine. Simply drag a slice of time to create a task. It’s the fastest, most tactile way to build a daily schedule using the time blocking method. STAY ON TRACK WITH WIDGETS Keep your visual day at a glance. Our beautiful Home Screen widgets show your current time block and what’s coming next to prevent executive dysfunction. SYNC WITH REALITY Seamlessly integrates with your Apple Calendar. Your meetings, classes, and time blocks live in one unified visual circle. BUILD BETTER HABITS Set recurring tasks once (e.g., "Morning Meds" or "Deep Work") and let DayZen protect that time forever. WHO IS DAYZEN FOR? -Adult ADHD & Neurodivergent Minds: If you struggle with time blindness, focus, or maintaining a routine, this is the ADHD tool you’ve been waiting for. -Visual Thinkers: For those who are allergic to endless text-based task lists. -Students & Freelancers: Perfect for Pomodoro focus sessions and managing irregular daily plans. -Over-committers: Learn the power of saying "no" when you see your time circle is full. PRIVATE BY DESIGN Your schedule is your business. DayZen requires no account and collects no data. There are no ads, ever. PRICING - Free Forever: Enjoy the full radial clock, 10 active tasks, and basic visual planning features. Experience the difference of visual time management. - Premium: Unlock unlimited tasks, advanced time statistics, two-way calendar sync, and Dynamic Island support. THE REAL DIFFERENCE Other planner apps ask, "What do you want to do?" DayZen asks, "What time actually fits?" See the circle. Respect the clock. Own your day. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: http://kavolis.xyz/dayzen/privacy-policy

About

SinceWhen

Track the time elapsed since important events, from personal care to home maintenance. Get gentle reminders for when things are due next, with smart predictions based on your logging habits. Designed for real life, it offers a private and guilt-free way to manage recurring tasks.

Highlights
  • Log events with one tap
  • Smart predictions for due dates
  • Widgets for Home and Lock Screen
  • Siri and Shortcuts integration
  • Multi-day event tracking
  • Calendar and chart visualizations
  • Private by design, no account needed
Features
Read full description

Not everything is a daily habit. SinceWhen tells you how long it's been since the last haircut, oil change, vet visit, or dose, and when it's likely due next. One tap to log. No streaks. No guilt. No account. HOW IT WORKS • Name something you do now and then • Tap to log it, from the app, a widget, your Lock Screen, or Siri • SinceWhen learns your rhythm and shows what's due BUILT FOR REAL LIFE • Home & car: AC filters, oil changes, smoke detectors, deep cleans • Plants & pets: watering, fertilizing, flea treatments, vet visits • Health & self-care: as-needed medication, vitamins, skincare, dentist • Life admin: haircuts, calling family, reviewing subscriptions • ADHD-friendly: a zero-shame history for time blindness SMART, GENTLE PREDICTIONS SinceWhen studies the gaps between your logs and says things like "Usually every 6 weeks" and "Expected tomorrow". Pattern aware skips one-off long gaps, like a week away, and follows your real routine. Optional nudges arrive only when something is actually due, and you can log straight from the notification. MULTI-DAY EVENTS Tap once to start, tap again to end. Trips, sick days, and cycles are counted as Day 1, Day 2, and so on, with the full duration shaded on your charts. LOG IT IN SECONDS • Home Screen and Lock Screen widgets • Undo an accidental tap right where you made it • Siri and Shortcuts: "Hey Siri, log haircut" • Add a note, or backdate a log in a couple of taps EVERYTHING AT A GLANCE • Calendar with a ring on the next expected day • Interval and monthly charts • Categories with their own insights • Pause an event while you're away so predictions stay honest • Grid or list, pin what matters, dark mode, iPhone and iPad PRIVATE BY DESIGN No accounts, no ads, no analytics. Your timeline stays on your device and in your own iCloud. Export everything as JSON any time. FREE TO START Your first 3 events are free forever with every core feature. SINCEWHEN PRO Unlimited events, iCloud sync and backup, Siri and Shortcuts, and JSON export. • Monthly and Yearly: Family Sharing included • Lifetime: pay once, own it forever (Family Sharing not included) Available in English, German, Japanese, Spanish, French, Portuguese, Korean, and Italian. Privacy Policy: https://devapt.com/sincewhen/privacy Terms of Use: https://devapt.com/sincewhen/terms

Screenshots

DayZen4 screens
SinceWhen4 screens

Verdict

The call

The clearest difference is update cadence: SinceWhen at weekly against DayZen's monthly. SinceWhen also leads on review sentiment (88% vs 75%) and ratings volume (14 vs 4). On price, rating, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DayZen sells 3 in-app purchases, starting at $2.99 per month and SinceWhen sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.3 for DayZen against 4.4 for SinceWhen. Both are backed by a comparable volume of ratings — 4 and 14 respectively. Written reviews are what separate them: 75% of DayZen's written reviews are positive against 88% of SinceWhen's.

UpkeepUpdate frequency

DayZen ships an update monthly, SinceWhen weekly. Both last shipped on November 5, 2026.

Scorecard3 real differences · 7 level
DayZen versus SinceWhen: the parameters behind the verdict, then further details
ParameterDayZenSinceWhen
PriceFreeFree
Rating4.3 (4 ratings)4.4 (14 ratings) — better
Positive reviews75.0% of reviews87.5% of reviews — better
Number of ratings414 — better
Update frequencyMonthlyWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS17 — better17.6
Further details — not scored
Size7 MB12 MB
Age rating4+4+
DeveloperJoris KavolisBasharath Shaik

Customer experience

DayZen

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

SinceWhen

All ratings14 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews8 reviews
Positive87.5%
Neutral0.0%
Negative12.5%

In-app purchases

3 purchases

DayZen

Subscriptions2
  • Monthly Premium$2.991 Month
  • Yearly Premium7 Days trial$19.991 Year
One-time1
  • Lifetime$24.99
3 purchases

SinceWhen

Subscriptions2
  • SinceWhen Pro + Family (Monthly)$4.991 Month
  • SinceWhen Pro + Family (Yearly)$19.991 Year
One-time1
  • SinceWhen Pro (Lifetime)$39.99

Questions

Is DayZen free?
DayZen is free to download, with in-app purchases available.
Is SinceWhen free?
SinceWhen is free to download, with in-app purchases available.
Which has better reviews, DayZen or SinceWhen?
SinceWhen is rated higher. DayZen averages 4.3 out of 5 from 4 ratings, while SinceWhen averages 4.4 from 14 ratings.
Do DayZen or SinceWhen have ads?
Neither DayZen nor SinceWhen shows ads.
Which is updated more often, DayZen or SinceWhen?
DayZen ships an update monthly, and SinceWhen weekly. Most recently, DayZen was updated on November 5, 2026 and SinceWhen on November 5, 2026.

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