Period tracking apps have earned genuine distrust: several mainstream ones have been caught selling or sharing exactly the data — cycle dates, symptoms, sexual activity — that users least want leaving their phone. For something this personal, "who owns this data" isn't a minor detail, it's the whole decision.
Building your own collapses that risk to zero: describe how you want to log and predict cycles, and WyberAi generates an app that stores everything in a database only you control, with no analytics SDK bundled in by a company whose revenue model depends on your data. Cycle predictions, symptom and mood logging, and a history view that helps you actually spot patterns — the features, without the tradeoff.
What your period tracker needs — and gets
✓
Cycle logging and predictions
Log period start and end dates; the app predicts your next cycle based on your own history, not a population average.
✓
Symptom and mood tracking
Log symptoms, flow intensity, and mood per day — your own tags, not a fixed list a product team chose for you.
✓
Private by construction
Your data lives in your own database with no third-party analytics or ad SDKs bundled in — because you didn't build any in.
✓
History and patterns
A calendar view across past cycles so patterns — irregular timing, symptom clusters — are visible over months, not just this cycle.
From idea to live app in three steps
01
Describe it
Paste the starter prompt below (or write your own) — screens, data, and rules in plain English.
02
AI engineers it
WyberAi generates the full app — UI, database schema, auth — self-heals build errors, and runs a live security scan.
03
Publish it
Preview instantly, refine in chat, then publish to a live URL (or your own domain) when it's right.
Starter prompt — engineered for this build
The exact prompt to build your period tracker
Build a period tracker mobile app: a Log screen to record period start/end dates, flow intensity, symptoms (cramps, headache, fatigue), and mood for any day; a Calendar screen showing past cycles and a predicted next start date based on average cycle length; and a History screen with trends in cycle length and most common symptoms over the last 6 months. Simple, private, no social features.
Questions people ask about building a period tracker
Is my data really private?+
It's stored in your own app's database, generated with no analytics or tracking SDKs unless you explicitly ask for them — nothing to sell because nothing is collected by a third party.
How accurate are the predictions?+
Predictions are based on your own logged cycle history — the more cycles logged, the more the average reflects your actual pattern rather than a generic 28-day assumption.
Can I export my data?+
Ask for a CSV export in your prompt — your history is yours to take with you, unlike a closed app's walled-off records.
Can a partner or doctor see specific data?+
Ask for a shareable summary or PDF report screen if you want to hand specific data to a doctor — sharing stays entirely your choice.
Start building for free — 50 credits/month
No credit card required. Your period tracker live in minutes.