Comparison

Calendar by 44 vs Solid Calendar

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

Head to head
About

Calendar by 44

This app prioritizes speed and clarity for managing your schedule. It offers an intuitive flow for creating events, a seamless monthly view, and a daily list with quick actions. Organize your time efficiently with integrated to-dos and advanced features.

Highlights
  • Super quick event input with preview
  • Seamlessly scrolling monthly view
  • Integrated daily list with swipe actions
  • To-do list management
  • Color tagging and event highlighting
  • Advanced repeat rules and custom alerts
Features
Read full description

Calendar by 44 is all about two things; speed and clarity. To clearly see what your schedule looks like, and to quickly add events to it. It's based on a seamlessly scrolling collection of months, tightly integrated with a daily list and a new kind of intuitive flow for creating events. It’s small, there are no view switchers and is operated completely from the lower part of the screen. Read on to learn more or download for free to try it before you buy it. SUPER QUICK INPUT. :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: Tap or grab the plus button and drop it on any date to start creating an item. As you begin to type, a preview schedule is shown for the current date. That way you can see what time works best, even while creating. Scroll the preview to set start time. Drag it to set duration. No need to pick through menus or manually type out the time, though that’s supported too. Shortcuts lets you select a calendar, a color tag, location and enter notes by typing hotkeys. For example “/” + [notes] or “#” + [color]. This is the fastest and smoothest calendar creation flow we have seen. MONTHLY DISPLAY. :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: The design is based on a seamless, infinitely scrolling monthly view that highlights multiple-day events, includes to-dos, fades out past events, supports highlight by color tag and presents your events in up to three lines to avoid clipping. Tap any date to open a daily list. DAILY LIST. :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: The daily list shows calendar events right along side scheduled to-dos. It supports quick swipe-actions that let you delete, copy, set color tags and complete to-dos. TO-DOS. :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: Any good calendar should let you organize through simple lists and to-do items. Calendar by 44 does this in style. Other than that we support most of what you would expect, create, edit and delete calendars, create advanced repeat rules, any number of custom alerts, convert events in to to-dos, invite people…the list goes on. Our terms of use can be found at https://www.calendarby44.com/terms-of-use.

About

Solid Calendar

This app helps you manage your time, tasks, and events with a natural language interface. It acts as a digital planner, rotating schedule manager, and reminder system, syncing with your existing device calendars for seamless organization.

Highlights
  • Add events with natural language input
  • Calendar planner with intuitive interface
  • Digital planner for tasks and to-do lists
  • Rotating schedule management
  • Quick join for video calls
  • Reminders and smart notifications
  • Multiple layout options
Features
Read full description

No subscriptions - Buy once, keep forever on all devices Elevate your productivity and organization with Solid Calendar – the all-in-one solution for managing your time, tasks, and events seamlessly. Whether you're a busy professional, a student juggling classes, or anyone looking to make the most of every day, this app offers the perfect blend of a calendar planner, rotating schedule manager, digital organizer and reminders manager. Are you ready to reclaim your time and enjoy a more organized lifestyle? Download this calendar app now and manage your schedule, tasks, and events with ease. Key Features of Solid Calendar: - Add events with natural language Isn't it so much easier when our devices understand us? You can say things like: "Pick up the kids tomorrow at 18:00" "Lunch this Saturday between 12:00 and 14:00" "Meet with Bill in 2 hours" - Calendar planner Stay on top of your schedule effortlessly with this intuitive calendar interface. Plan events, set reminders, and never miss appointments again. With a user-friendly design, adding and managing events is a breeze, ensuring you're always in control of your time with this natural language calendar. For those with complex rotating schedules, this app is also a great fit. Whether you are in healthcare, public safety, or any other profession with rotating shifts, this app adapts to your unique needs. See your rotation patterns and stay informed about your upcoming schedule with Solid Calendar. - Digital planner Say goodbye to traditional paper planners! This digital planner allows you to create, organize, and track tasks. Prioritize tasks, set due dates, and get a clear overview of your to-do list. With synchronization across devices, this planner is accessible anytime, anywhere. - 6 different layouts With Solid Calendar you can find the layout that suits your needs best on each device - Quick Join for video calls You will find options to jump straight into events that have video calls both from the app itself and from notifications - Reminders Your Reminders can live alongside your events in all layouts. You can also create and edit reminders. - Use the calendars on your device Solid Calendar works with the calendars you already have on your device. No data about your calendars leaves your device, so you can have peace of mind about your privacy - Light and Dark mode Enjoy well designed themes for both light and dark mode and pick the one you like best to accommodate your style. - Seamless integration This app easily syncs with all your device's calendars, ensuring that your events and appointments will be scheduled into a routine calendar. You'll never have to stress about missing an essential occasion. All your data remains up-to-date. - Smart reminders Stay on track with smart notifications and reminders. Customize when you will be notified about upcoming events, tasks, or shifts. So, you will be prepared for what's next. - Data security Your privacy is the top priority. This app is designed with advanced security measures to protect your sensitive information. Enjoy the convenience of a digital planner without compromising your data. Your events and reminders remain on your device, they are never uploaded to any third party servers. Cross-device sync Access your schedule and tasks from any iOS device. Whether using your iPhone or iPad, you'll always have your planner at your fingertips. Are you ready to get on top of your schedule? Solid Calendar is a universal app available on iOS, iPadOS, and macOS You can choose to unlock just this app or all 5 Solid Apps with one purchase Terms of service: http://solidapps.co/terms.html Privacy policy: http://solidapps.co/privacy.html

Screenshots

Calendar by 444 screens
Solid Calendar4 screens

Verdict

The call

The clearest difference is rating: Solid Calendar at 4.9 against Calendar by 44's 4.3. Calendar by 44's advantage is update cadence (every 4 days vs every 3 weeks) and monetization model (free with in-app purchases vs paid). On price, review sentiment, ratings volume 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. Calendar by 44 sells 3 in-app purchases, starting at $2.99 per month and Solid Calendar sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Solid Calendar holds the better App Store score, 4.9 against 4.3. Both are backed by a comparable volume of ratings — 80 and 121 respectively. Written reviews point the same way: 75% of Calendar by 44's written reviews are positive against 79% of Solid Calendar's.

UpkeepUpdate frequency

Calendar by 44 ships an update every 4 days, Solid Calendar every 3 weeks. Both last shipped on November 3, 2026.

Scorecard4 real differences · 6 level
Calendar by 44 versus Solid Calendar: the parameters behind the verdict, then further details
ParameterCalendar by 44Solid Calendar
PriceFreeFree
Rating4.3 (80 ratings)4.9 (121 ratings) — better
Positive reviews74.7% of reviews78.9% of reviews — better
Number of ratings80121 — better
Update frequencyEvery 4 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13.0 — better16.0
Further details — not scored
Size56 MB19 MB
Age rating4+4+
DeveloperFortyfour ABSolid Apps S.R.L.

Customer experience

Calendar by 44

All ratings79 ratings
Positive83.5%
Neutral10.1%
Negative6.3%
Written reviews75 reviews
Positive74.7%
Neutral10.7%
Negative14.7%

Solid Calendar

All ratings121 ratings
Positive97.5%
Neutral0.8%
Negative1.7%
Written reviews38 reviews
Positive78.9%
Neutral2.6%
Negative18.4%

User reviews

Calendar by 44

From 80 App Store ratings

What we love

  • ✨ Beautiful and clean design
  • 👍 Easy to use and navigate
  • 🚀 Fast and efficient
  • 🎨 Customizable colors and themes
  • 🔄 Integrates to-dos and reminders

Room to improve

  • 😞 Abandoned software / no updates
  • 💸 Expensive pricing / subscription concerns
  • 🐛 Glitches and bugs reported
  • ⚠️ Some users find it clunky
  • ❓ Subscription issues / failed restore

Solid Calendar

From 121 App Store ratings

What we love

  • ✨ Brilliant app overall
  • 👍 Easy to use interface
  • 🎨 Visually appealing design
  • 💰 Affordable one-time purchase
  • 🚀 Fast loading and performance

Room to improve

  • 🤔 Account required for sync
  • 📅 Weekly view horizontal events
  • 🐛 Sync issues with date
  • ❓ Widgets feel like afterthought
  • 🐛 App crashes after update

Bugs and requests

Calendar by 44

Reported bugs

20 issues
  • Calendar crashing
  • Failed to restore purchase
  • App icon date looks like a notification
  • Reminders not coming across correctly
  • Slow to start up
Show 15 more
  • Appointment input clunky / times not staying
  • Events disappear from display (requires force quit)
  • Calendar view glitches / goes blank
  • Support button not linking
  • Imported notes buried in syntax symbols
  • Fails to load reminders without restarting
  • Date badge shows previous day
  • Window does not resize on iPad
  • Cannot find icon in recents on iOS 14
  • Cannot get out of settings without restarting
  • Dial out links don't work in appointments
  • Travel time not supported
  • Language parsing behind competition
  • Too many taps to edit event duration
  • Subscription issues / failed restore

Requested features

25 requests
  • Home Screen / Lock Screen widget
  • Number for the day of the month on app icon
  • Widget for iPhone & iPad
  • Work shifts implementation
  • Solid color boxes for work shifts
Show 20 more
  • macOS version release
  • More color packs
  • Widgets
  • Sounds
  • Strike out function for tasks
  • Widgets for iOS 14
  • Vantage color palette options
  • Travel time support
  • Dial out links in appointments
  • White background or color options
  • Zoom out for yearly overview
  • Gesture options
  • User guide
  • Text wrapping option
  • Tap AM/PM buttons without typing time
  • More ways to view schedule (week view)
  • Cloud solution for syncing colors and stickers
  • Port to Mac Catalina
  • Syncing with Vantage app colors
  • Set all events to give an alert beforehand

Solid Calendar

Reported bugs

7 issues
  • Date is a day behind in Australia
  • Jumps back to today's date when viewing future dates
  • App crashes every time after last update
  • Changing daily event time affects rest of week incorrectly
  • Weekly view shows all-day events horizontally like timed events
Show 2 more
  • Medium widgets have small font sizes and look wrong
  • Sync to correct date issue

Requested features

24 requests
  • Display checkmarks for finished appointments
  • Better task management landing pad, floating to-dos
  • Option to display little checkmarks for finished appointments
  • Floating to-do's on widget page
  • Option to display little checkmarks for finished appointments
Show 19 more
  • Better task management landing pad, so that daily to-dos do not have to be tied to reminders or calendars.
  • Floating to-do’s on my widget page would be rad too.
  • Option to display little checkmarks for finished appointments
  • Better task management landing pad, so that daily to-dos do not have to be tied to reminders or calendars.
  • Floating to-do’s on my widget page would be rad too.
  • Display checkmarks for finished appointments
  • Better task management landing pad for to-dos
  • Floating to-dos on widget page
  • Grey out past events in all views
  • Allow 45 min event durations
  • Time to leave notifications
  • Indicator for current place in day's timeline
  • Daily briefing notifications
  • Hyperlinks when creating reminders
  • Option for minimalist widget for following day
  • Option to have calendar items crossed out on widgets
  • Unique Apple Watch complication
  • Include reminders functionality
  • Add todo function

In-app purchases

3 purchases

Calendar by 44

Subscriptions2
  • Monthly7 Days trial$2.991 Month
  • Yearly7 Days trial$9.991 Year
One-time1
  • Unlimited$32.99
2 purchases

Solid Calendar

One-time2
  • Unlock this app (lifetime)$4.99
  • Unlock ALL 10 Solid Apps (lifetime)$9.99

Questions

Is Calendar by 44 free?
Calendar by 44 is free to download, with in-app purchases available.
Is Solid Calendar free?
Solid Calendar is free to download, with in-app purchases available.
Which has better reviews, Calendar by 44 or Solid Calendar?
Solid Calendar is rated higher. Calendar by 44 averages 4.3 out of 5 from 80 ratings, while Solid Calendar averages 4.9 from 121 ratings.
Do Calendar by 44 or Solid Calendar have ads?
Neither Calendar by 44 nor Solid Calendar shows ads.
Which is updated more often, Calendar by 44 or Solid Calendar?
Calendar by 44 ships an update every 4 days, and Solid Calendar every 3 weeks. Most recently, Calendar by 44 was updated on November 3, 2026 and Solid Calendar on November 3, 2026.

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