Report updated Jul 7, 2026
하루하루: 육아일기
For parents seeking a simple, low-friction digital tool to document their child's daily development.
하루하루: 육아일기 is an established lifestyle app that is completely free.
What is 하루하루: 육아일기?
하루하루: 육아일기 is a text-based parenting journal for iOS that allows parents to log daily growth memories in a simple, non-intrusive format.
Users hire this app to document daily moments without the friction of clinical data entry, serving the need for low-stakes memory keeping.
Current Momentum
v1.0 · 7mo ago
Zombie- Released initial version Nov 2025.
- Maintains free-access utility model.
Active Nemesis
Baby Tracker & Diary - CuboAi
By CuboAi
Other Rivals
7-Day Rank Pulse 🇺🇸
LifestyleNo ranking data
Rating Pulse 🇺🇸
Gathering signals...
What makes this app unique?
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What Are The Key Features?
Text-based logging interface for recording daily events and memories of a child's growth.
User account system for persistent data storage and cross-session access.
How much does it cost?
- Free access to all features
The app operates as a free utility with no visible subscription or IAP gates following the removal of interstitial ads.
Who Built It?
Enrichment in progress
Publisher profile available very soon
What other apps does HONGGEUN KIM make?
What do users think recently?
Analysis in progress, available soon
What is the competitive landscape for 하루하루: 육아일기?
Where is it available?
Localized markets (1)
How's The Lifestyle Market?
하루하루: 육아일기 occupies the lifestyle category as a simple utility for memory preservation. Its positioning relies on simplicity, directly contrasting with data-centric competitors like CuboAi that require significant manual input.
Which niche is 하루하루: 육아일기 in?
Explore the full Parenting Companions niche
Every app in this space (450 tracked), the niche's live rankings, and Marlvel's editorial take on the job-to-be-done.
The rivals identified
Nemeses(1)
CuboAi competes directly by offering a comprehensive, data-driven approach to parenting logs that mirrors the daily recording intent of 하루하루.
Differentiators
- Offers automated data summarization that reduces the manual entry burden for busy parents
- Provides multi-user support, allowing both parents to contribute to the same child's timeline
- Features a timeline-based UI optimized for single-handed operation during infant care tasks
Head to head
The target should lean into its identity as a lightweight, non-intrusive diary to attract users overwhelmed by the complexity of data-heavy trackers.
Contenders(4)
KidBase targets the same demographic of parents looking to document growth, but adds clinical-style tracking features.
Differentiators
- Includes WHO percentile charts for objective growth tracking missing from the target app
- Utilizes quick-log widgets to capture events directly from the iOS home screen
This app competes for the attention of parents managing shared responsibilities and alternating care schedules.
Differentiators
- Specializes in turn-based tracking and participant management for shared parenting duties
- Provides detailed statistical tracking of care distribution between multiple caregivers
It overlaps with the target by combining photo-based memory keeping with a growth diary format.
Differentiators
- Enables silent photo capture to document sleeping children without disturbing them
- Integrates a calendar view specifically designed for organizing photo-based growth memories
This app serves as a direct alternative for users seeking a private, log-based approach to parenting records.
Differentiators
- Prioritizes privacy-focused local storage, appealing to users wary of cloud-based data harvesting
- Includes native data export functionality, allowing users to maintain ownership of their records
Same space(3)
HomeDay occupies the same lifestyle category by focusing on family organization and schedule management.
Differentiators
- Uses AI-powered voice parsing to create schedules from natural language input
- Facilitates family group synchronization to keep all members aligned on daily events
It targets the pre-birth phase of the same parenting lifecycle, focusing on collaborative decision-making.
Differentiators
- Uses a swipe-based matching interface to gamify the process of selecting baby names
- Enables partner invitation to compare and match name preferences in a shared repository
This app competes by offering high-tech monitoring and analytics for the same parenting audience.
Differentiators
- Integrates proprietary Yobi-PPG sensing technology for advanced health and anomaly detection
- Provides deep data analytics that go beyond simple diary entries to monitor infant vitals
Compare 하루하루: 육아일기 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 하루하루: 육아일기
Strengths to defend, gaps to attack
Core Strengths
- Low-friction text interface minimizes daily time investment
Critical Frictions
- Lack of multi-user support prevents collaborative parenting records
Growth Levers
- Integration of photo-based growth timelines could capture memory-keeping segments
Market Threats
- Clinical-style trackers adding 'lite' modes could drain the user base
What are the next best moves?
Ship multi-user support because it is the top gap against CuboAi → increase retention via shared parenting utility
CuboAi's multi-user support is a key differentiator that forces this app to be a solo-user tool.
Trade-off: Push the photo-timeline feature to Q2 — multi-user support is a higher-impact retention lever.
A counter-intuitive read
The app's lack of monetization is a strategic liability, not a feature: by failing to gate advanced features, it loses the ability to fund the development of the collaborative tools required to retain parents as their children age.
Feature Gaps vs Competitors
- Multi-user support (available in CuboAi but missing here)
- WHO percentile growth charts (available in KidBase but missing here)
Key Takeaways
하루하루: 육아일기 succeeds as a lightweight, non-intrusive diary, but its lack of collaborative features and growth analytics limits its long-term retention against data-driven rivals, so the PM should prioritize multi-user support to increase the switching cost for families.
Where Is It Heading?
Mixed Signals
The parenting diary market is consolidating around tools that offer both memory keeping and clinical utility. 하루하루: 육아일기 remains in a vulnerable position by focusing only on the former, which will likely lead to churn as parents seek more comprehensive solutions as their children grow.
The app maintains a simple, free-access model, which lowers the barrier to entry but fails to build a long-term retention loop.
The absence of collaborative features and clinical analytics leaves the app exposed to feature-rich competitors that offer more utility for the same effort.
Sources
- [1] App Store, source