Report updated Apr 27, 2026
Calendo
For individuals seeking a straightforward, offline-capable calendar interface for managing personal and professional schedules.
Overview · Full Intel report in progress
Calendo is an established productivity app that is completely free. With a 3.0/5 rating from 2 reviews, it shows polarized user reception.
What is Calendo?
Current Momentum
v3.0 · 3w ago
IntenseLast updated 23d ago. 5 versions tracked.
Competition
Rivals identification in progress
7-Day Rank Pulse 🇺🇸
ProductivityNo ranking data
Rating Pulse 🇺🇸
What makes this app unique?
How Is The App's Momentum Right Now?
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What Are The Key Features?
Allows users to quickly add, edit, and delete calendar events with minimal taps.
Provides a continuous monthly view to eliminate the need for frequent screen switching.
Enables calendar access without an internet connection by syncing directly with the system calendar.
How much does it cost?
Who Built It?
Wesley de Groot
Building niche utility tools and community platforms for developers, engineers, and hobbyists.
Portfolio
13
Apps
Who is Wesley de Groot?
Wesley de Groot operates as a high-velocity developer focusing on utility 'gap-fillers' across diverse technical and hobbyist niches. His positioning relies on a rapid iteration cycle and a community-centric approach, often building tools that serve specific professional networks or local developer ecosystems. The portfolio's strategic advantage is its focus on underserved utility needs—such as engineering documentation and game-specific reference tools—rather than competing in high-traffic consumer categories.
Who is Wesley de Groot for?
- Technical professionals
- Electrical engineers
- Niche hobbyists seeking specific functional utilities
- Privacy-focused tools
Portfolio momentum
Maintains an extremely high development cadence with 34 updates across 14 apps in the last 6 months, with 92% of the portfolio currently active.
What other apps does Wesley de Groot make?
Analysis in progress, available soon
What do users think recently?
Analysis in progress, available soon
Analysis in progress, available soon
What is the competitive landscape for Calendo?
How's The Productivity Market?
Market outlook for this category
Available very soon
Strategic analysis coming soon
SWOT, key takeaways & outlook
The outtake for Calendo
Key Takeaways
Calendo is a privacy-focused, free calendar utility that emphasizes simplicity and offline functionality through system calendar integration.
Where Is It Heading?
Trend analysis
Available very soon