Report updated Apr 19, 2026
Once(A special period tracker)
For women seeking a digital tool to monitor menstrual health, fertility, and cycle-related symptoms.
Overview · Full Intel report in progress
Once(A special period tracker) is an established health & fitness app that is free with in-app purchases. With a 4.4/5 rating from 359.7K reviews, it shows polarized user reception.
What is Once(A special period tracker)?
Current Momentum
v1.9 · 1w ago
IntenseLast updated 11d ago. 5 versions tracked.
Competition
Rivals identification in progress
7-Day Rank Pulse 🇺🇸
Health & FitnessNo ranking data
Rating Pulse 🇺🇸
What makes this app unique?
What Does It Look Like?
How Is The App's Momentum Right Now?
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What Are The Key Features?
Automatically calculates estimated period dates and irregular cycles, improving in accuracy over time.
Provides insights into ovulation and fertile windows to assist with pregnancy planning or birth control awareness.
Allows users to record specific health symptoms and cycle history within a centralized calendar.
How much does it cost?
Who Built It?
Malang Studio Co. Ltd,
Gamifying daily routines and providing localized utility tools to help users manage morning habits, transit, and personal health.
Portfolio
4
Apps
Who is Malang Studio Co. Ltd,?
Malang Studio differentiates itself by applying gamification and character-driven mechanics to high-friction daily utilities, such as morning alarms. Their portfolio is strategically anchored in the South Korean market, utilizing localized transit data and proximity-based social features to maintain a defensible niche against global utility incumbents. The publisher demonstrates a high-velocity maintenance strategy, frequently updating legacy titles to preserve functionality and user retention.
Who is Malang Studio Co. Ltd, for?
- General mobile users in South Korea
- Global audiences seeking gamified tools for routine management
- Health tracking
Portfolio momentum
Maintains a high update frequency with 9 releases across 4 apps in the last 6 months, indicating active optimization of their core portfolio.
What other apps does Malang Studio Co. Ltd, 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 Once(A special period tracker)?
How's The Health & Fitness Market?
Market outlook for this category
Available very soon
Strategic analysis coming soon
SWOT, key takeaways & outlook
The outtake for Once(A special period tracker)
Key Takeaways
While the app offers core cycle tracking functionality, recent user feedback highlights significant stability issues, synchronization failures, and frustration regarding ad-supported data entry.
Where Is It Heading?
Trend analysis
Available very soon