Comparison

Compose AI Executive Assistant vs Shift Calendar

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

Head to head
About

Compose AI Executive Assistant

Features
Read full description

Your inbox, run like an executive assistant runs it. Compose is built for Gmail and Google Workspace accounts. It reads your email, tells you what needs you today, keeps a live ledger of what you promised and what you're waiting on, and drafts the reply β€” so you decide and move on. Outlook and IMAP accounts are currently not supported. KNOW WHAT NEEDS YOUR ATTENTION Compose continuously analyzes your email and surfaces: β€’ Urgent messages β€’ Top priorities β€’ Risks and important developments β€’ Direct asks that need a response β€’ Commitments you have made β€’ Things you are waiting on β€’ Follow-ups that may otherwise fall through the cracks Instead of treating every email equally, Compose helps you focus on what actually requires your attention. YOUR EXECUTIVE DAILY BRIEF Get a real-time view of: β€’ What is urgent β€’ Your highest-priority conversations β€’ Important commitments, asks and waiting-ons β€’ Upcoming calendar events β€’ Tasks and follow-ups See the state of your work without reconstructing it manually from your inbox. TRACK COMMITMENTS AUTOMATICALLY Compose identifies commitments inside email conversations and maintains a live ledger of what you promised, what others asked of you, and what you are waiting for. As conversations progress, their status can update automatically β€” helping prevent important obligations from disappearing into old threads. AI THAT HELPS YOU ACT Compose goes beyond summarization. From the context of an email, it can help you: β€’ Draft replies β€’ Generate responses in your voice β€’ Create tasks β€’ Schedule meetings β€’ Add follow-ups β€’ Determine appropriate next steps β€’ Trigger connected workflows The goal is simple: move from reading β†’ deciding β†’ acting with less friction. EMAIL INTELLIGENCE, NOT JUST EMAIL Compose is designed around a different question: Not β€œHow can AI help me write this email?” But: β€œWhat does this email mean for my work, and what should happen next?” For founders, executives, managers, consultants and professionals whose inbox is also where decisions, obligations and follow-ups live. Terms of Use: https://simacompose.com/terms Privacy Policy: https://simacompose.com/privacy

About

Shift Calendar

Features
Read full description

See your whole shift schedule on one calendar, and know at a glance when you work and when your next day off is. Create your shift types – Day, Evening, Night and Off to start with – and tap days to paint them in. Fill a repeating rotation for months at a time, and set a reminder before a shift starts. β–  Made for - Nurses and hospital staff on rotating shifts - Shift workers in factories, services, police and fire departments - Anyone who copies a roster into a calendar by hand every month β–  Features - Paint: pick a shift type and tap days; tap again to clear. There's an eraser too - Fill pattern: tap shift types in order to build a rotation, add "Skip day" for days left empty, and fill up to 366 days at a time from any start date. Save the patterns you use often - Shift types with a name, a 2-character short label, a color and set hours – including night shifts that end the next day - A reminder for each shift type with set hours: at start time, or 15 minutes, 30 minutes, 1 hour, 90 minutes or 2 hours before - A note for any day - Summary for any month: shifts by type, total hours and your next day off - Widgets: the next 7 days on your Home Screen, and today's and tomorrow's shift on your Lock Screen - iCloud backup: automatic while you're signed in to iCloud; restore on a new device Reminders and widgets follow your first calendar. Reminders are scheduled on your device, so open the app now and then to keep the later ones scheduled. β–  Privacy Your shifts are stored on your device and never sent to our servers. While you're signed in to iCloud, a backup copy is kept in your own iCloud. No account needed. Where ad consent applies, you can change your choice under Ad privacy options in Settings. β–  Pricing Free with ads and one calendar. Pro removes ads and unlocks multiple calendars (for family, colleagues or a second job), exporting your month as an image and a large widget with this month's shifts. Get Pro with a monthly or yearly subscription, or with a one-time lifetime purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Payment is charged to your Apple Account; manage or cancel your subscription in Settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://donald-deok.github.io/app-privacy/shift_calendar_ios.html

Screenshots

Compose AI Executive Assistant4 screens
Shift Calendar4 screens

Verdict

The call

The clearest difference is ads: Compose AI Executive Assistant at none against Shift Calendar's shown. Shift Calendar's advantage is update cadence (every 2 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Compose AI Executive Assistant sells 2 in-app purchases, starting at $24.99 per month and Shift Calendar sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Compose AI Executive Assistant ships an update every 2 weeks, Shift Calendar every 2 days. Both last shipped on November 10, 2026.

Scorecard2 real differences Β· 4 level
Compose AI Executive Assistant versus Shift Calendar: the parameters behind the verdict, then further details
ParameterCompose AI Executive AssistantShift Calendar
PriceFreeFree
Update frequencyEvery 2 weeksEvery 2 days β€” better
AdsNo β€” betterYes
In-app purchasesYesYes
DevicesiPhone, MaciPhone, iPad
Requires iOS17.017.0
Further details β€” not scored
Size22 MB7 MB
Age rating4+4+
DeveloperSimarahitam Technologies Private LimitedDeokhyeon Kim

In-app purchases

2 purchases

Compose AI Executive Assistant

Subscriptions2
  • Compose Pro Monthly$24.991 Month
  • Compose Pro Annual$249.991 Year
3 purchases

Shift Calendar

Subscriptions2
  • Pro – Monthly$1.991 Month
  • Pro – Yearly$9.991 Year
One-time1
  • Pro – Lifetime$24.99

Questions

Is Compose AI Executive Assistant free?
Compose AI Executive Assistant is free to download, with in-app purchases available.
Is Shift Calendar free?
Shift Calendar is free to download, with in-app purchases available.
Do Compose AI Executive Assistant or Shift Calendar have ads?
Shift Calendar shows ads; Compose AI Executive Assistant does not.
Which is updated more often, Compose AI Executive Assistant or Shift Calendar?
Compose AI Executive Assistant ships an update every 2 weeks, and Shift Calendar every 2 days. Most recently, Compose AI Executive Assistant was updated on November 10, 2026 and Shift Calendar on November 10, 2026.

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