Percentile is a growth-tracking utility for parents that plots infant measurements against WHO and CDC benchmarks on iOS.
The App DNA
What makes this app unique?
The app removes the privacy and subscription friction that characterizes most infant health trackers, serving parents who want a permanent, offline record for their pediatrician.
For Parents and caregivers seeking a private, offline tool to track infant growth metrics against medical standards.
What does it look like?
Key features
Visualizes weight, height, and head circumference against WHO and CDC standards.
Generates formatted growth history for medical professionals.
Saves all measurements on-device without requiring accounts.
How much does it cost?
The one-time purchase model positions Percentile as a privacy-first utility, avoiding the recurring subscription fatigue common in the health tracking category.
Velocity
Maintenance developmentopaqueShow more...
The app currently operates at a maintenance cadence, with only a single release recorded in the last two months. There is no evidence of active development or recurring feature updates following the initial launch. The development trend is currently stagnant, as the app has not received any updates since its debut 61 days ago. Future momentum remains unclear given the lack of subsequent activity.
Who built it?
User Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for Percentile – Baby Growth Chart
How's the Health & Fitness market?
Percentile occupies a distinct niche as a $4.99 one-time purchase utility, contrasting with the subscription-heavy health tracking category. The lack of cloud-syncing limits its appeal for multi-caregiver households but reinforces its privacy-first positioning.
Read the market outlookThe rivals identified
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Access the full report for freeThe Analyst's Read
Key takeaways for Percentile – Baby Growth Chart
Where is it heading?
Users report: The infant health tracking market is consolidating around subscription-based platforms that offer multi-caregiver syncing and cloud backups. Percentile's offline-first posture is a defensible niche, but the lack of optional cloud-syncing leaves it exposed to churn as children grow and data-loss risks become more critical.
- The maintenance-mode release cadence suggests a static product lifecycle, which limits the app's ability to respond to emerging competitive feature sets.
The SWOT
- One-time purchase model avoids subscription fatigue
- Local-only storage ensures data privacy
- PDF export streamlines clinical communication
- Localized pricing could capture privacy-conscious segments
Next best moves
Ship secure, encrypted cloud-syncing because lack of backup is a primary risk for long-term health records → increase retention
The counter-intuitive read
The lack of cloud-syncing is not just a…
Read the full takeSince the last report: The assessment of Percentile has shifted from viewing offline-only storage as a pure privacy benefit to recognizing it as a material data-loss risk. The product roadmap now prioritizes the implementation of encrypted cloud-syncing to mitigate this vulnerability.
Bottom line
Percentile serves a clear need for private, permanent growth records, but the lack of cloud-syncing creates a data-loss risk that may limit its long-term utility for parents. Implementing secure, optional backup would address this vulnerability without compromising the privacy-first value proposition.
Unlock 2 critical frictions, 1 market threat and the analyst’s take.
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- [1] App Store, source
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