Comparison

ZenMinder vs Riff Calendar

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

Head to head
About

ZenMinder

Visualize your completed tasks from Apple Reminders as a contribution heatmap. Track your daily productivity and revisit completed items with detailed insights. Available on iPhone and Mac, it brings back the satisfaction of checking things off.

Highlights
  • Completed reminder heatmap
  • Daily productivity visualization
  • Browse completed tasks by day
  • Filter reminders by status
  • iPhone and Mac apps
  • Home screen widgets
  • Menu bar app
Features
Read full description

Checked something off in Reminders — and then it was gone? ZenMinder gives you that sense of accomplishment back. ZenMinder is a companion to Apple Reminders for iPhone and Mac. It reads your reminder history and turns completed tasks into a GitHub-style contribution graph. SEE YOUR PROGRESS • Heatmap of completed reminders, day by day • Tap any day to browse what you finished • Filter by completed, created, or all reminders • Color intensity shows how productive each day was • Choose a color theme that fits your style IPHONE & MAC • Full iPhone app with home screen widgets • Mac menu bar app — always one click away • Works with the Reminders lists you already use Stop losing your wins when you check things off. With ZenMinder, every completed reminder leaves a mark.

About

Riff Calendar

Features
Read full description

Riff is one continuous calendar that you zoom. Pinch out and the weeks stack up until half a year is on screen. Pinch in and a single day opens, hour by hour. There are no separate month, week and day views to switch between. EVERY STOP OF THE ZOOM IS A WORKING CALENDAR Zoom out to find a free weekend. Zoom in to pick the hour. Three weeks for a trip, three days for a long weekend, one day for a dinner. The day you were looking at stays on screen the whole way. PLACE IT, TITLE IT, DONE Hold a free slot and an event appears there. Type the title and you are done. Type a title you have used before and Riff fills in the place and alert from last time. Otherwise the title is all Riff asks for. THE CALENDAR STAYS OPEN WHILE YOU EDIT Select an event and its details open beneath the calendar, with the days around it still in view. A new time is set on the calendar, not in a form. Slide the event to its new hour, or carry it to another day or week and drop it there. THE CALENDAR ITSELF, AS A WIDGET Riff comes with three kinds of Home Screen widgets. The first is the calendar itself, from one day to two whole weeks, with every event drawn at its hour and its length. The second draws five weeks at once. The third, Up next, lists what is coming. Lock Screen widgets are included. REMINDERS BESIDE YOUR EVENTS Reminders with a due date stand on the calendar beside your events. Create, move and complete them in Riff. YOUR CALENDARS, NOT COPIES OF THEM Riff works directly on the calendars already on your iPhone: iCloud, Google, Exchange, whatever Apple Calendar sees. There is no Riff account and nothing to import. Events you create or move in Riff show up everywhere else. Delete the app and your data has not gone anywhere. DATA COLLECTED: NONE Riff has no server, no account and no analytics. Your events pass between Apple's calendar database and your screen. ALSO IN RIFF • Alerts, repeats, places, links and notes • Search across all your calendars • Time zones handled when you travel • Siri and Shortcuts: add an event, go to a date • Control Center controls • Light and dark • 32 languages GOOD TO KNOW Riff is for iPhone and needs iOS 26 or later. There is no iPad, Mac or Apple Watch app. You can answer invitations in Riff but not send them. To invite someone, create the event in Apple Calendar and it shows up in Riff. This is Riff as it stands today. Feedback shapes what gets built next. PRICE Riff is free for three weeks with everything included. No account and no payment detail is asked for. After that you choose a monthly subscription, a yearly subscription or a one-time lifetime purchase. Every option unlocks all of Riff and can be shared through Family Sharing. The prices for your country are listed under In-App Purchases on this page. Monthly and Yearly renew automatically unless cancelled at least 24 hours before the end of the period. You manage and cancel subscriptions in your App Store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://riffcalendar.com/privacy/ Riff is made by one developer, Magnus Rex, in Sweden. Write to hello@riffcalendar.com.

Screenshots

ZenMinder3 screens
Riff Calendar4 screens

Verdict

The call

The clearest difference is in-app purchases: ZenMinder at none against Riff Calendar's 3. ZenMinder also leads on device support (3 vs 1). On price, ads and iOS requirement 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. Riff Calendar sells 3 in-app purchases, starting at $2.99 per month. ZenMinder asks for nothing beyond the download.

Scorecard2 real differences · 8 level
ZenMinder versus Riff Calendar: the parameters behind the verdict, then further details
ParameterZenMinderRiff Calendar
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS26.026.0
Further details — not scored
Size3 MB12 MB
Age rating4+4+
DeveloperShaomeng ZhangKJELL MAGNUS REX

In-app purchases

None

ZenMinder

No in-app purchases

3 purchases

Riff Calendar

Subscriptions2
  • Monthly$2.991 Month
  • Yearly$24.991 Year
One-time1
  • Lifetime$49.99

Questions

Is ZenMinder free?
ZenMinder is free to download, with no in-app purchases.
Is Riff Calendar free?
Riff Calendar is free to download, with in-app purchases available.
Do ZenMinder or Riff Calendar have ads?
Neither ZenMinder nor Riff Calendar shows ads.

Other comparisons