Erby is a medical-category infant-care tracker for iOS and Android that logs feeding, sleep, and health milestones for newborns.
Product velocity
Active
Daily rank 🇺🇸
#164
▲1Medical · free
Sentiment
4.8
22k reviews
Nemesis
LactApp: Breastfeeding expert
The App DNA
What makes this app unique?
Parents use Erby to reduce the cognitive load of tracking complex newborn schedules, replacing manual paper logs with a digital, multi-child diary.
For New parents and caregivers requiring detailed logs for infant feeding, sleep, and health milestones.
What does it look like?
Key features
One-click timer to track duration and side for breastfeeding or pumping sessions.
Support for tracking multiple profiles within a single account, including twins.
Custom Tiles for quick app launch and tracking from wearable devices.
How much does it cost?
The freemium model gates data portability and cross-device sync behind a subscription, while keeping core logging accessible to drive the daily habit.
Velocity
Active developmentopaqueperformanceShow more...
The app maintains an active development cadence, shipping approximately 1.2 releases per week based on the most recent activity. Despite the frequent updates, the developer consistently uses opaque release notes, providing no insight into specific feature additions or functional changes. This pattern suggests the team may be utilizing server-side feature flags or A/B testing rather than traditional App Store feature deployments. The development trend remains stable, focused entirely on performance and stability maintenance.
Who built it?
Whisper Arts
4 apps tracked · Medical
Breastfeeding Newborn tracker
Menstrual cycle tracker - Days
Stop Motion Animation MakerUser Sentiment
What do users think recently?
Recent user voice shows a thrilled sentiment. Users appreciate intuitive interface design allows parents to track multiple children without feeling overwhelmed by complex menus and data visualization tools help parents identify sleep and feeding patterns during the challenging first year, but report intermittent data synchronization failures between devices cause frustration for parents sharing account access.
How are ratings & reviews evolving?
What users say, by theme
- Intuitive interface design allows parents to track multiple children without feeling overwhelmed by complex menus
- Data visualization tools help parents identify sleep and feeding patterns during the challenging first year
- Flexible free tier provides significant value without aggressive ad interruptions or forced subscription pressure
- Intermittent data synchronization failures between devices cause frustration for parents sharing account access
60 of 73 recent reviews analyzed · high confidence · Thrilled overall
Read the full review analysisUnlock 2 more frustration themes and 2 user requests, each backed by review evidence.
Access the full report for freeCompetition
Competitive landscape for Erby feeding & sleep tracker
How's the Medical market?
Erby holds a 4.81 rating across 22,099 total ratings, signaling strong product-market fit for its core logging features. The current reliance on a freemium model that restricts sync to premium tiers creates a clear conversion funnel for multi-caregiver households.
Read the market outlookThe rivals identified
By Fem Health
Both apps target new parents requiring infant feeding and sleep tracking, creating direct competition for daily logging habits and household data management.
- LactApp provides an algorithm-driven Q&A engine for breastfeeding guidance, whereas Erby focuses on manual logging.
- LactApp targets clinical professionals via a PRO tier, while Erby focuses on multi-caregiver household synchronization.
Unlock the head-to-head verdict: where this rival wins, and where it loses.
Access the full report for freeThe Analyst's Read
Key takeaways for Erby feeding & sleep tracker
Where is it heading?
The infant-care tracker market is consolidating around apps that offer reliable, multi-user synchronization. Erby's current reliance on basic notifications and intermittent sync leaves it exposed to rivals that offer more robust, alarm-based reminders. If synchronization reliability is not addressed, the app risks losing the multi-caregiver segment that drives its premium subscription conversions.
- Synchronization failures between devices erode the multi-user value proposition, which compounds the frustration already visible in recent user reviews.
- The consistent release cadence of three updates in 17 days demonstrates active maintenance, preventing the app from falling into a dormant state.
The SWOT
- Multi-child diary supports twins-care tracking
- Wear OS integration enables quick logging
- Email-based authentication would resolve login friction
- Photo attachments would enhance milestone documentation
Next best moves
Rebuild synchronization logic because sync failures are the top-reported frustration → increase premium retention
+ 1 more prioritized moveThe counter-intuitive read
The lack of email-based authentication is a deliberate…
Read the full takeSince the last report: The app's competitive outlook shifted from stable to mixed due to unresolved synchronization and widget failures that threaten premium conversion. Development remains active, but the focus on performance maintenance has not yet addressed the primary friction points reported by users.
Bottom line
Erby's core logging interface is highly valued, but the failure of its synchronization and widget features undermines the premium subscription value proposition. Prioritizing infrastructure stability over new features will protect the core user base from churn.
Unlock 2 critical frictions, 1 market threat, 1 more prioritized move and the analyst’s take.
Access the full report for freeSources
Report last updated