01
What VitaChart is about
For over twelve years, my wife and I have used the Creighton Model to chart her natural fertility cycles, working hand in hand with a certified FertilityCare practitioner and a NaProTechnology medical doctor. As a software architect and a father of five, I created VitaChart out of real family practice and personal conviction.
Many couples find natural family planning methods powerful, empowering, and respectful of feminine physiology, but are frustrated by the software available today: recurring fees that feel exploitative, fragile cloud databases holding intimate health data, or generic period trackers that try to guess ovulation with blind statistical algorithms.
VitaChart replaces that complexity with quiet elegance: a dignified 12-card daily logging grid, offline-first local storage, and instant generation of a standardized 35-day consultation sheet ready for medical review.
02
Key strengths & pros compared to other models
When evaluating VitaChart alongside specialized fertility apps (such as the official FertilityCare App, Chart Neo, or Read Your Body) and commercial menstrual apps (like Flo or Clue), several clear architectural and economic advantages stand out:
| Dimension |
VitaChart |
Subscription Apps |
Generic Trackers |
| Pricing & Model |
€1.99 / $1.99 One-time purchase
No ongoing fees; permanent ownership. |
$35 – $100+ / year
Ongoing annual subscriptions. |
Freemium / $40+/yr
Aggressive paywalls & ads. |
| Privacy & Data Storage |
100% Local on Device
No external cloud servers; zero leak risk. |
Cloud databases
Requires user account & sync. |
Server-side tracking
Data monetisation & third-party ad SDKs. |
| Observational Fidelity |
Creighton & NaPro Aligned
12-card observation deck, mucus scores, stamps. |
Varies by app
Often complex or rigid entry flows. |
Algorithmic guessing
Overrides individual physiological markers. |
| Medical Consultation PDF |
Standardized 35-Day Sheet
Clinician-ready PDF export with doctor notes. |
Basic PDF or screenshots
Often cluttered or unformatted. |
None / Generic graphs
Unusable in NaPro medical appointments. |
| Offline Autonomy |
Fully Offline
Works seamlessly without internet access. |
Requires online login
Fails when offline or session expires. |
Requires connectivity
Constant telemetry calls. |
Summary of the advantage: Because VitaChart stores data directly on the user’s phone without requiring server infrastructure, there are zero server maintenance bills to pass on to families. This allows a single, affordable purchase that respects family budgets while guaranteeing impenetrable privacy.
03
Interactive synthetic demonstration
Below is an interactive preview of how VitaChart behaves in daily practice. This demonstration uses fictional synthetic data representing a textbook 28-day cycle with clear pre-peak, peak, and post-peak phases. Click any day on the timeline to inspect the daily biomarker cards.
Cycle Timeline · 28 Days
Day 14 Selected · Identified Peak Day
Menses (Red)
Dry / Infertile (Green)
Fertile Mucus (White)
Peak Day (★)
Day 14 Observations
Clear, stretchy, lubricative cervical mucus (10KL) · Peak day biomarker identified.
Standardized 35-Day Clinical Consultation Sheet
Generated directly from the daily recorded observations, ready for medical appointments.
View Sample PDF →
04
Closed beta testing & practitioner feedback
VitaChart is currently in active private testing on Android (Google Play Closed Testing) and iPhone (TestFlight / local builds). Store release is scheduled following feedback from experienced practitioners and users.
- Google Play Promo Codes: If you received an invitation promo code, you can redeem it directly in the Google Play Store under Profile → Payments & subscriptions → Redeem code, or at play.google.com/redeem to unlock VitaChart without charge.
- Institutional Independence: VitaChart is an independent observational diary designed to assist couples. It is not an official release of the Saint Paul VI Institute, FCCA, or AAFCP, and does not replace certified instruction in natural methods.
- Data Protection: Read the complete VitaChart Privacy Policy for full details on local device storage and export procedures.
- Get in Touch: For feedback, methodological questions, or practitioner suggestions, write directly to [email protected].