Comparison

HiFutureSelf vs Calendars

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

Head to head
About

HiFutureSelf

Send messages to your future self or friends, scheduled for delivery at a specific time. This app helps you remember important tasks, offer encouragement, or share memories.

Highlights
  • Schedule future messages
  • Send messages to yourself
  • Send messages to friends
  • Add photos to messages
  • Home screen widget
  • Set repeating reminders
Features
Read full description

Send messages to your future self! Write a note. Pick a moment: a date, a time, or a place. HiFutureSelf delivers it exactly when you need it. Your grocery list as you walk into the store. A pep talk before the gym. A quiet "breathe" as you step out the door. The simplest reminder app you'll ever use. And the most thoughtful. *Celebrating 16 years on the App Store!* WHAT YOU CAN SEND • A note to yourself tomorrow, next month, or ten years from now. • A voice memo recording for your future self. • A photo, a face, a moment, a memory to land at the right time. • A secret message to a friend. Surprise the people you love with a note that arrives exactly when they need it. WHEN IT ARRIVES IS UP TO YOU • Any future date and time, down to the minute. • The moment you arrive at or leave a place. • Hourly, daily, weekly, monthly, yearly, or on the specific days you choose. • Pause anytime with a swipe. Resume the same way. BUILT TO STAY OUT OF YOUR WAY • 5 home screen widgets so your upcoming messages are always in view. • Light and dark mode, matched to your iOS theme automatically. • A library of motivational messages for the days the words won't come. PRIVATE BY DESIGN No accounts. No ads. No tracking. No in-app purchases. No data collection. Your messages live on your device, with optional iCloud sync. Works fully offline. Download HiFutureSelf. Free. Start writing to the version of you who'll need it most.

About

Calendars

This app combines calendar, task management, and habit tracking to boost productivity and organization. It offers seamless syncing across Apple devices and integrates with popular services like Google Calendar. Plan your day, manage tasks, and build routines with customizable views and features.

Highlights
  • Calendar and task management
  • Habit tracking and routine building
  • Cross-device syncing
  • Natural language event creation
  • Integration with Google Calendar and Zoom
  • Customizable views and widgets
Features
Read full description

Calendars by Readdle is the all-in-one calendar, task manager, daily planner, and habit tracker — seamlessly working across all your Apple devices: Mac, iPhone, iPad, and Apple Watch. Plan your day, build better habits, boost productivity, and stay organized with powerful features and smooth sync between all your devices. What you can do with Calendars: • View and manage your calendar with daily, weekly, and monthly views • Create events, set reminders, and never miss important dates • Use the built-in agenda planner to focus on what matters most • Organize your to-do list and manage your tasks with ease • Quickly add events or to-do items using natural language • Build routines and track your habits to stay consistent • Take a guided productivity course to improve time management and focus • Sync across devices with Google Calendar, iCloud, and more • Customize your planner calendar with color coding and widgets • Join Zoom, Google Meet, or GoToMeeting directly from your calendar • Stay in control of your time, wherever you are Whether you're planning a busy workday, building new habits, or working on personal growth, Calendars brings everything together to help you own your time — across all your Apple devices. Privacy Policy: https://readdle.com/calendars/legal/privacy Terms of Service: https://readdle.com/calendars/legal/terms Have questions, comments, or issues? Don’t hesitate to reach out to us at http://readdle.com/contact

Screenshots

HiFutureSelf4 screens
Calendars4 screens

Verdict

The call

The clearest difference is in-app purchases: HiFutureSelf at none against Calendars's 20. HiFutureSelf also leads on review sentiment (81% vs 56%). Calendars's advantage is ratings volume (123K vs 554) and chart position (#150 vs unranked). On price, rating, update cadence and ads 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. Calendars sells 18 in-app purchases, starting at $3.99 per month. HiFutureSelf asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for HiFutureSelf against 4.7 for Calendars. That said, the two scores are not equally well evidenced: Calendars has 123K ratings behind it against 554, so its average is the more settled of the two. Written reviews are what separate them: 81% of HiFutureSelf's written reviews are positive against 56% of Calendars's.

UpkeepUpdate frequency

HiFutureSelf ships an update every 2 weeks, Calendars weekly. The most recent releases landed on October 22, 2026 and November 1, 2026 respectively.

Scorecard6 real differences · 5 level
HiFutureSelf versus Calendars: the parameters behind the verdict, then further details
ParameterHiFutureSelfCalendars
PriceFreeFree
Rating4.8 (554 ratings) — better4.7 (123K ratings)
Positive reviews81.0% of reviews — better55.8% of reviews
Number of ratings554123K — better
Update frequencyEvery 2 weeksWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
Best chart rank—#150 — better
DevicesiPhone, iPadiPhone, iPad, Mac, Apple Watch — better
Requires iOS18.0 — better18.2
Further details — not scored
Size19 MB413 MB
Age rating4+4+
DeveloperDBElement, LLCReaddle Technologies Limited

Customer experience

HiFutureSelf

All ratings553 ratings
Positive95.1%
Neutral2.0%
Negative2.9%
Written reviews195 reviews
Positive81.0%
Neutral5.6%
Negative13.3%

Calendars

All ratings122,497 ratings
Positive93.8%
Neutral3.1%
Negative3.1%
Written reviews1,290 reviews
Positive55.8%
Neutral8.6%
Negative35.6%

User reviews

HiFutureSelf

From 554 App Store ratings

What we love

  • 👍 Convenient and easy to use
  • 🚀 Simple and efficient interface
  • 💡 Helpful for forgetful users
  • 👍 Reliable and consistent
  • 👍 Useful for reminders and affirmations

Room to improve

  • 🐛 Occasional issues with notifications not working as expected
  • 🐛 Difficulty deleting or editing existing reminders
  • 🐛 Potential data loss or deletion of reminders
  • 🔋 Concerns about the app's impact on device performance

Calendars

From 123K App Store ratings

What we love

  • 🌟 Excellent calendar app
  • 👍 Easy to use and organize
  • 🎨 Helpful color-coding
  • 📆 Seamless integration with other calendars
  • 🗓️ Detailed monthly/weekly views

Room to improve

  • 🐛 Occasional glitches and data loss
  • 💰 Concerns over subscription model
  • 🕰️ Cumbersome date/time selection process
  • 🔍 Limited location search functionality
  • 🔄 Sync issues between devices

Bugs and requests

HiFutureSelf

Reported bugs

3 issues
  • Reminders not sending at the correct time
  • Unexpected deletion of existing reminders
  • Compatibility issues with newer iOS versions

Requested features

5 requests
  • Add more customization options for reminders (e.g., repeat on specific days, delayed notifications)
  • Implement a search or sorting function for sent reminders
  • Integrate with other productivity apps or calendars
  • Add support for voice commands or voice reminders
  • Provide more sound and notification options

Calendars

Reported bugs

3 issues
  • Disappearing events and appointments
  • Upgrade process causing data loss
  • Freezing and crashing on certain devices

Requested features

5 requests
  • Recurring events for free users
  • Customizable widgets and app icons
  • Ability to archive/restore past events
  • Improved Apple Watch integration
  • Shared calendars and family management

In-app purchases

None

HiFutureSelf

No in-app purchases

18 purchases

Calendars

Subscriptions9
  • Calendars PRO 1 Month$3.991 Month
  • Calendars by Readdle: Interesting Calendars1 Month trial$3.991 Year
  • Calendars PRO 1 Month7 Days trial$3.991 Month
Show 6 more
  • Calendars PRO 1 Year3 Months trial$19.991 Year
  • Calendars PRO 1 Year7 Days trial2 variants$19.991 Year
  • Calendars PRO 1 Year1 Year trial$19.991 Year
  • Calendars PRO 1 Year14 Days trial$19.991 Year
  • Calendars PRO 1 Year7 Days trial$21.991 Year
  • Calendars PRO 1 Year7 Days trial$29.991 Year
One-time9
  • Calendars PRO LifetimeFree
  • Invites & Attendees Upgrade$1.99
  • Smart Input Upgrade$1.99
Show 6 more
  • Full Upgrade$4.99
  • Interesting Calendars$5.99
  • My schedule planner, Organizer$6.99
  • Full Pack$12.99
  • Reminders & Calendars$19.99
  • Recurring Events$31.99

Questions

Is HiFutureSelf free?
HiFutureSelf is free to download, with no in-app purchases.
Is Calendars free?
Calendars is free to download, with in-app purchases available.
Which has better reviews, HiFutureSelf or Calendars?
HiFutureSelf is rated higher. HiFutureSelf averages 4.8 out of 5 from 554 ratings, while Calendars averages 4.7 from 123K ratings.
Do HiFutureSelf or Calendars have ads?
Neither HiFutureSelf nor Calendars shows ads.
Which is updated more often, HiFutureSelf or Calendars?
HiFutureSelf ships an update every 2 weeks, and Calendars weekly. Most recently, HiFutureSelf was updated on October 22, 2026 and Calendars on November 1, 2026.

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