Comparison

Solid Calendar vs Penloop

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

Head to head
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

About

Penloop

This app helps you organize your life by capturing events, todos, notes, and more. It offers a flexible system with calendars, folders, and tags to manage your information privately on your device.

Highlights
  • Capture events, todos, notes, journals
  • Organize with calendars, folders, tags
  • Private, on-device data storage
  • Automatic backups
  • Create multiple spaces
  • Sync via iCloud Drive
Features
Read full description

Penloop isn’t just a tool for storing information—it’s a space for thinking, creating, and growing. It adapts to your needs, so you can focus on what truly matters. Designed for doers, creators, and those who want to make a difference, Penloop is for the ones who are always thinking, moving, and striving to be better. It’s for those who want to live more mindfully and seek more than just an app. It’s for people who value privacy, clarity, and balance—those who are tired of tools that control them, and instead, want something that empowers them. It’s where your life can thrive. Rethink how you organize your life. At its core, Penloop isn’t just a note-taking app. It’s a better way to think, plan, and create. In one place, you can capture everything: • Events — so you’re always on top of your appointments • Todos / Reminders — so you never forget what matters • Notes and Journals — for your ideas and reflections • Timers and Stopwatches — to master your time • Logs — to monitor progress on what matters most • Bookmarks — for inspiration and future plans A system, tailored to you. With Penloop, you’re in control. Organize your world using: • Sleek Calendars — Keep your schedule on track by planning and visualizing events and appointments. Organize your day, set reminders, and never miss an important event, all while boosting your productivity and reducing stress. • Intuitive Folders — Streamline your workflow by grouping related items and reducing clutter. Folders help you stay organized, improve efficiency, and maintain focus, making it easy to find and manage your content. • Powerful Tags — Quickly organize, search, and filter your notes, tasks, and events. Tags help you find related content, track progress, and stay focused, so you can stay organized and effortlessly boost productivity. Privacy, Built Right In. • Your data stays yours. Always. Penloop doesn’t rely on servers. It stores your notes as ‘.space’ files directly on your device. Move them effortlessly between your project folders or sync them via iCloud Drive. This is your digital space—beautiful, flexible, and private. Reliable. Intuitive. Effortless. • With automatic backups and the ability to create multiple spaces, Penloop ensures your notes are safe and ready whenever inspiration strikes. It’s not just a tool. It’s a leap forward in how you organize your life. This is Penloop. Start today.

Screenshots

Solid Calendar4 screens
Penloop4 screens

Verdict

The call

The clearest difference is price: Solid Calendar at Free against Penloop's $6.99. Solid Calendar also leads on ratings volume (119 vs 3). Penloop's advantage is in-app purchases (none vs 2) and review sentiment (100% vs 79%). On rating, update cadence, ads and monetization model 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

Solid Calendar is free to download; Penloop costs $6.99 up front. Solid Calendar sells 2 one-off in-app purchases. Penloop asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Solid Calendar against 5.0 for Penloop. That said, the two scores are not equally well evidenced: Solid Calendar has 119 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 79% of Solid Calendar's written reviews are positive against 100% of Penloop's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on September 23, 2026 and August 2, 2026 respectively.

Scorecard4 real differences · 6 level
Solid Calendar versus Penloop: the parameters behind the verdict, then further details
ParameterSolid CalendarPenloop
PriceFree — better$6.99
Rating4.9 (119 ratings)5.0 (3 ratings) — better
Positive reviews78.9% of reviews100.0% of reviews — better
Number of ratings119 — better3
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidPaid
DevicesiPhone, iPad, MaciPhone, iPad, Mac
Requires iOS16.016.0
Further details — not scored
Size19 MB17 MB
Age rating4+17+
DeveloperSolid Apps S.R.L.DynaPlastic Ltd.

Customer experience

Solid Calendar

All ratings119 ratings
Positive97.5%
Neutral0.8%
Negative1.7%
Written reviews38 reviews
Positive78.9%
Neutral2.6%
Negative18.4%

Penloop

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

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

Penloop

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Solid Calendar

One-time2
  • Unlock this app (lifetime)$4.99
  • Unlock ALL 10 Solid Apps (lifetime)$9.99
None

Penloop

No in-app purchases

Questions

Is Solid Calendar free?
Solid Calendar is free to download, with in-app purchases available.
Is Penloop free?
Penloop costs $6.99, with no in-app purchases.
Which has better reviews, Solid Calendar or Penloop?
Penloop is rated higher. Solid Calendar averages 4.9 out of 5 from 119 ratings, while Penloop averages 5.0 from 3 ratings.
Do Solid Calendar or Penloop have ads?
Neither Solid Calendar nor Penloop shows ads.
Which is updated more often, Solid Calendar or Penloop?
Solid Calendar ships an update fortnightly, and Penloop fortnightly. Most recently, Solid Calendar was updated on September 23, 2026 and Penloop on August 2, 2026.

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