Comparison

Calendar+ 2 vs Second Brain

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

Head to head
About

Calendar+ 2

Features
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Brain-dump your whole day in plain words. Calendar+ 2 reads it and builds a color-blocked, time-scheduled day on your real calendar โ€” in seconds. Not a timeline sidebar. Not a planner that fakes a calendar. A full, syncing calendar that also plans your day with AI โ€” the only app that does all three. COLOR RULES: AUTOMATIC COLOR CODING Stop recoloring events by hand. Set up a rule once โ€” title contains "Gym", a location, notes, an attendee, or a time of day โ€” and every matching event takes that color automatically, across all your calendars, in every view and widget. Rules apply from the top down, and a live preview shows which events each rule colors as you edit. Your whole week, readable at a glance. Included in Premium. PLAN YOUR DAY WITH AI Type or speak everything on your plate: "gym 7am, deep work 9โ€“12, lunch with Maya, call dentist, finish Q3 report." Tap Plan. Calendar+ 2 parses natural language, checks your live calendar for conflicts, and returns a color-blocked schedule you confirm with one tap. No templates. No slot-hunting. MANUAL TIME-BLOCKING CANVAS Brain-dump tasks into the inbox as quick chips. Drag them onto your day or week canvas โ€” blocks snap to real time slots alongside your live events. Rearrange in seconds. AI ASSISTANT Just chat. "Move my Tuesday standup to Thursday at 2pm." "What do I have on Friday?" "Remind me to call the dentist tomorrow." "Show week numbers." The assistant finds, creates, edits, and reschedules events and Apple Reminders, and changes app settings for you โ€” across Google Calendar, iCloud, and device calendars. Every change is shown for your approval before it's applied, and under each reply you can see exactly what information was shared with the AI. A FULL CALENDAR, EVERY VIEW Day, week, month, multi-week grids, and custom multi-day views. Swipe to navigate, tap to create. Multi-account color coding. Two-way sync with Google Calendar, Apple iCloud, and device calendars. BEST-IN-CLASS WIDGET SUITE 14 widgets: Month, 1โ€“4 weeks, Week Timeline, Week Grid, Week Agenda, List, Today, Today with mini month, Up Next, Agenda + Upcoming weeks, and the new "Days + Weeks". Full skin, font-size, and dark-mode customization per widget. The most powerful calendar widget suite on iOS. BUILT FOR BUSY BRAINS ADHD, time-blindness, packed student schedules, or professional overload โ€” Calendar+ 2 gives structure without requiring you to be organized first. Brain-dump, let AI sort it out. 26 LANGUAGES Fully localized in 26 languages. PREMIUM SUBSCRIPTION Includes AI planning, all views, and the full widget suite. Current pricing shown at purchase. Download Calendar+ 2. Spend 60 seconds planning your day, not all morning. SUBSCRIPTION TERMS Calendar+ 2 Premium is available as a monthly or yearly subscription, or as a one-time lifetime purchase. Subscriptions auto-renew unless canceled at least 24 hours before the end of the current period. Payment will be charged to your Apple ID account at confirmation of purchase. Manage or cancel your subscription in Settings > Apple ID > Subscriptions. Privacy Policy: https://calendarplus2.joshuanco.com/privacy-policy Terms of Service: https://calendarplus2.joshuanco.com/terms-of-service

About

Second Brain

Features
Read full description

Manage notes, to-dos, and your schedule in one app. Capture thoughts as notes, actions as to-dos, and anything with a date on the calendar. No more hopping between apps. โ–  Notes Write fast, organize later. Sort into folders and find anything with search. Share only the notes you choose via a link, and unshare with a single tap. โ–  To-Dos Set due dates and repeat rules. See what's left with D-Day countdowns, and group tasks by category. โ–  Calendar See to-dos and events on the same screen. Switch between month and week views to check how full your week is. โ–  Widgets Check today's tasks from your Home Screen and Lock Screen. See what's left without opening the app. โ–  Notifications Get notified as deadlines approach. Start the day with a morning briefing and wrap up with a daily summary. โ–  AI Organize Pull action items out of long text. Turn copied text into to-dos. Gather past records into a retrospective. AI features are free up to 3 times per month. To use more, connect your own AI API key. โ–  Same content on every device Notes written on iPhone open on the web too. Sign in once and your content follows you across devices. โ–  Privacy AI features only process text you explicitly send. See the privacy policy for details. https://docs.ainote.dev/legal/privacy

Screenshots

Calendar+ 24 screens
Second Brain4 screens

Verdict

The call

The clearest difference is in-app purchases: Second Brain at none against Calendar+ 2's 3. Calendar+ 2's advantage is update cadence (every 3 days vs monthly) and iOS requirement (18.2 vs 26.0). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Calendar+ 2 sells 3 in-app purchases, starting at $4.99 per month. Second Brain asks for nothing beyond the download.

UpkeepUpdate frequency

Calendar+ 2 ships an update every 3 days, Second Brain monthly. The most recent releases landed on November 13, 2026 and October 31, 2026 respectively.

Scorecard3 real differences ยท 3 level
Calendar+ 2 versus Second Brain: the parameters behind the verdict, then further details
ParameterCalendar+ 2Second Brain
PriceFreeFree
Update frequencyEvery 3 days โ€” betterMonthly
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad, Apple Watch โ€” betteriPhone, iPad
Requires iOS18.2 โ€” better26.0
Further details โ€” not scored
Size45 MB37 MB
Age rating4+4+
DeveloperJoshua & Company Inc.Dcode

In-app purchases

3 purchases

Calendar+ 2

Subscriptions2
  • Monthly subscription$4.991 Month
  • Yearly subscription3 Days trial$29.991 Year
One-time1
  • Lifetime purchase$149.99
None

Second Brain

No in-app purchases

Questions

Is Calendar+ 2 free?
Calendar+ 2 is free to download, with in-app purchases available.
Is Second Brain free?
Second Brain is free to download, with no in-app purchases.
Do Calendar+ 2 or Second Brain have ads?
Neither Calendar+ 2 nor Second Brain shows ads.
Which is updated more often, Calendar+ 2 or Second Brain?
Calendar+ 2 ships an update every 3 days, and Second Brain monthly. Most recently, Calendar+ 2 was updated on November 13, 2026 and Second Brain on October 31, 2026.

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