Report updated May 7, 2026
Calendars: Schedule Planner
For professionals, students, and doctors requiring synchronized scheduling across the Apple ecosystem.
Calendars: Schedule Planner is an established productivity app that is free with in-app purchases. With a 4.7/5 rating from 119K reviews, it shows polarized user reception. Users particularly appreciate integration with apple reminders and cross-device syncing enables efficient daily task management for power users, though recurring data loss incidents following recent updates cause significant frustration for long-term loyal users remains a common concern.
What is Calendars: Schedule Planner?
Calendars by Readdle is a productivity app for iOS and Mac that combines calendar scheduling, task management, and habit tracking.
Users hire the app to consolidate fragmented productivity workflows into a single, aesthetically-pleasing dashboard across their Apple devices.
Current Momentum
v5.37 · 1w ago
Maintenance- Ships technical refinements for performance.
- Maintains steady Apple ecosystem integration.
Active Nemesis
Google Calendar: Get Organized
By Google
Other Rivals
7-Day Rank Pulse 🇺🇸
ProductivityRating Pulse 🇺🇸
Recent User Mood
What makes this app unique?
What Does It Look Like?
What Are The Key Features?
Parses text strings to auto-populate event fields, location, and contacts.
Combines to-do lists with calendar events in a single interface.
Synchronizes schedule and tasks across Mac, iPhone, iPad, and Apple Watch.
How much does it cost?
- Free version
- Subscription-based premium
- Educational discount
Freemium model utilizes educational discounts as a B2B acquisition channel to penetrate student and institutional markets.
Who Built It?
Readdle Technologies
Equipping professionals and students with a unified ecosystem of AI-powered productivity tools for file management, email, and scheduling.
Portfolio
11
Apps
What other apps does Readdle Technologies make?
Documents: File Manager & Docs
Scanner Pro・Scan PDF Documents
Spark Classic – Email App
Scanner Mini – Scan PDF & Fax
PDF Expert – Edit, Sign PDFs
Spark Mail - AI Email & Inbox
Explore the full Readdle Technologies report
Portfolio breakdown, audience, momentum, and every app published by Readdle Technologies.
What do users think recently?
High confidence · 70 reviews analyzed · Based on 70 reviews. Signal may be noisy.
How did the latest release land?
What is the recent mood?
Recent user voice shows a mixed sentiment. Users appreciate integration with apple reminders and cross-device syncing enables efficient daily task management for power users, but report recurring data loss incidents following recent updates cause significant frustration for long-term loyal users.
What Users Love
What Frustrates Users
What Users Want
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
What is the competitive landscape for Calendars: Schedule Planner?
How's The Productivity Market?
How does it evolve in the Productivity market?
Calendars by Readdle holds the #98 Grossing position in its category (US). The gap between its high utility and the recent monetization shift suggests a reliance on new user acquisition to offset churn from established power users.
Rank progression
128 active rankings tracked — 30-day window
The rivals identified
Nemeses(1)
Dominates the productivity space with massive cross-platform integration and a near-universal user base that creates a high barrier to entry.
Differentiators
- Deep integration with the entire Google Workspace ecosystem provides seamless event creation from Gmail and Meet.
- Advanced machine learning features automatically suggest event titles and locations based on user history and context.
- Ubiquitous availability across web, iOS, and Android ensures a consistent experience regardless of the user's hardware.
Head to head
The target app must double down on its 'all-in-one' value proposition to differentiate from Google's utility-first, ecosystem-locked approach.
Contenders(3)
Captures the visual-first planning market with a unique timeline-based interface that differs from traditional grid calendars.
Differentiators
- Visual timeline interface provides a clearer representation of a user's day compared to traditional block-based calendar views.
- Focuses heavily on time-blocking methodology, making it a preferred tool for users struggling with ADHD or executive function.
Directly competes with the target app's hybrid task-and-calendar model by offering a highly integrated daily planning experience.
Differentiators
- The 'Any.do Moment' feature forces a daily review process that significantly boosts user retention and habit formation.
- Unified task and calendar view allows for drag-and-drop scheduling of to-do items directly onto the calendar grid.
A premium, design-forward competitor that targets power users with superior natural language processing for event creation.
Differentiators
- Industry-leading natural language parsing allows users to create complex events with simple, conversational text input.
- Sophisticated 'Calendar Sets' feature enables users to toggle between different work and personal views instantly.
Same space(3)
An award-winning task manager that serves as a primary alternative for users who prioritize task management over calendar sync.
Differentiators
- Minimalist, high-fidelity UI design sets the industry standard for task management aesthetics and interaction fluidity.
- Project-based hierarchy allows for complex task breakdown that exceeds the capabilities of standard calendar-based task lists.
Targets a specific demographic—families—with shared calendar and list features that the target app lacks.
Differentiators
- Shared family account architecture allows for multi-user synchronization of schedules, shopping lists, and meal planning.
- Color-coded family member views provide immediate visual clarity on household commitments and conflicting schedules.
A massive enterprise-grade competitor that bundles calendar functionality with email and file management.
Differentiators
- Deep integration with Microsoft 365 enterprise security and compliance features makes it the standard for corporate environments.
- Unified inbox and calendar management reduces context switching for users already embedded in the Microsoft ecosystem.
New entrants(1)
An emerging threat leveraging AI to consolidate tasks from multiple disparate apps into a single calendar view.
Differentiators
- Aggregates tasks from Slack, Trello, and Notion into a single unified calendar view using AI-driven automation.
- Focuses on 'time-blocking as a service' by automatically suggesting optimal time slots for pending tasks.
Compare Calendars: Schedule Planner against every rival
All rivals in one side-by-side table — identity, store metrics, ratings & sentiment, and strategic intel — plus a head-to-head page for each.
The outtake for Calendars: Schedule Planner
Strengths to defend, gaps to attack
Core Strengths
- Unified interface consolidates task and calendar workflows to increase session frequency
- Apple ecosystem integration creates high switching costs for hardware-loyal users
Critical Frictions
- Recurring data loss incidents post-update erode user trust
- Subscription paywalls for previously free features trigger churn
- Spam calendar alerts degrade the user experience
Growth Levers
- Institutional email verification offers an untapped B2B distribution channel
- Manual force-sync button would resolve persistent cloud latency complaints
Market Threats
- Google Calendar's ubiquitous free access undercuts the subscription model
- Akiflow's AI-driven task aggregation threatens the all-in-one value proposition
What are the next best moves?
Audit data persistence logic because recurring data loss is the top complaint → reduce churn
Data loss incidents are the primary driver of negative sentiment in recent reviews.
Trade-off: Pause the yearly-view feature development — data stability is a prerequisite for retention.
Refine subscription prompts because legacy users report harassment → reduce churn
Aggressive monetization is alienating the long-term user base.
Trade-off: Delay the new widget customization sprint — fixing the conversion funnel is higher priority.
A counter-intuitive read
The app's #98 grossing rank is a vulnerability, as maintenance-mode at the top of the category makes it more susceptible to disruption by AI-first entrants than a lower-ranked, high-growth app.
Feature Gaps vs Competitors
- AI-driven task aggregation (available in Akiflow but absent here)
- Shared family calendar architecture (available in Cozi but absent here)
Key Takeaways
Calendars by Readdle maintains a strong productivity niche through its unified dashboard, but recurring data loss and aggressive monetization threaten its long-term retention, so the team must prioritize data stability over new feature expansion to protect the core user base.
Where Is It Heading?
Declining
The productivity market is consolidating around utility-first tools that offer deeper ecosystem integration, leaving Calendars by Readdle exposed. Unless the team stabilizes data persistence and softens monetization for legacy users, the current sentiment decline will erode the user base before the next major feature drop.
Recurring data loss incidents following the latest update erode trust, which accelerates churn among the most loyal power users.
Aggressive subscription prompts for legacy users create a negative brand perception, driving users toward native alternatives like Google Calendar.