Genetics-first predictions
Meet your baby before they're born
Real Mendelian genetics meets AI visualization. The only mobile app we know of that calculates inheritance before generating images.
- Free to download
- No subscription for predictions
- Share with your partner
Trait Prediction
Example cross- Brown50%
- Hazel-green25%
- Green25%
HERC2 + OCA2 · two genes
Real Punnett math — probabilities, not promises
How It Works
- 01Step 01
Input Genetic Data
Enter eye color, hair color, skin tone, and other traits for both parents — Scientific mode is text only and needs no photos at all. On a Premium prediction you can add grandparent traits to account for recessive genes.
- 02Step 02
Genetic Calculation
Our Mendelian genetics engine calculates probabilities using Punnett squares, polygenic inheritance models, and multi-gene interactions.
- 03Step 03
AI Visualization
The AI generates realistic baby images guided by genetic probabilities - not random blending, but science-informed visualization.
Track two babies at once, not one baby twice.
The session engine was rebuilt so each baby carries its own timer, its own pause and its own reminder. Single-baby tracking is unchanged — the one-baby flow works exactly as it did before.
Illustration of the app's Logs tab for twins: a Baby A / Baby B switcher, date and type filters, Log Feeding, Log Sleep and Log Diaper buttons, and a newest-first list with day headers, session timelines, a running feed marked live, an unlogged gap and an entry from a partner.
- 01
Two timers running at once
Baby A's feed and Baby B's sleep run at the same time on one phone, each with its own pause math and its own reminder.
- 02
Per-baby cards, widgets, alarms
Every baby gets its own Home card, Live Activity, Lock Screen widget and Apple Watch page, and stopping one twin's alarm never touches the other's.
- 03
A twin-adjusted delivery window
Twins get a 37+0 target and a 34+0 to 38+6 window from ACOG and NICE guidance — earlier when your scans say the babies share a placenta — shown next to your medical 40-week due date, never instead of it.
Paper a doctor can file.
Every export is one US-Letter sheet on one design (the prediction report runs to two): a document id, an identity strip, numbered sections, brand pink on paper, and an explicit “+N more in app” instead of a silent cut. The doctor and pediatrician summaries also share as a QR code a clinician can scan.
Every export is one US-Letter sheet on one design: a document id, an identity strip, numbered sections, brand pink on paper, and an explicit “+N more in app” instead of a silent cut.
DRAWN IN HTML FROM THE APP'S PDF KIT — NOT A SCREENSHOT. SAMPLE DATA.EVERY SHEET IS DRAWN IN HTML FROM THE APP'S PDF KIT — NOT A SCREENSHOT.
SAMPLE DATA · TWINS PROFILE · GENERATED 2026-08-31
Everything You Need
From genetic predictions to postpartum recovery - one app for the entire journey.
Featured
AI Predictions
Real Mendelian genetics calculations guide our AI for scientifically-grounded baby predictions.
- AI-Powered Genetics
- TrueDepth Face Scanning
- 3 Prediction Modes
- Video on Premium — no extra credits
Pregnancy Tracking
Track your pregnancy week by week with kick counting, weight monitoring, and personalized insights.
Postpartum Care
Two dedicated modules (Baby Tracker + Mom Recovery), vaccination schedules for 240 countries and territories, EPDS screening, growth charts on the WHO's actual per-day curves, and complete mom recovery tracking.
Apple Watch
Quick logging from your wrist - kicks, feeding, sleep, and diapers with real-time sync.
Widgets & Live Activities
17 widgets — 9 for the Home Screen, 8 for the Lock Screen — and 8 Live Activities with a full Dynamic Island each.
32 Free Tools
Eye color predictor, due date calculator, ovulation tracker, and more - completely free.
Explore ToolsYou're sharing family photos. Here's our end of the deal.
Parent photos are used only to run your prediction and are deleted from our servers a few hours after it finishes — never before the prediction completes, and at least 4 hours after upload. The prediction itself — the report and the generated images — is removed from your account after 48 hours by default; you can choose 24 hours, 7 days or 30 days in Settings. Scientific mode sends no photos at all.
- Photos kept long-term
- 0
- Third-party trackers
- 0
- Prediction auto-delete (default)
- 48h
- Encryption in transit
- HTTPS/TLS
Three ways to predict. Pay only for what you run.
Everything else in the app is free. Credits are bought in packs, not on a subscription — and they never expire.
- Scientific ModePure genetics report4 / predictionFirst one's free
- Standard ModeFull Mendelian analysis8 / prediction
- Premium ModeThree-generation genetics12 / predictionFeatured
No subscription required. No commitments. No surprises.
Credit packs are priced in your local currency on the App Store.
The things people ask before downloading
Read all FAQs- Q1
What is ProbaBaby?
ProbaBaby (listed on the App Store as “Pregnancy & Baby Tracker - PB”) is a free iPhone, iPad and Apple Watch app for pregnancy, newborn and postpartum tracking, built for twins, in 32 in-app languages, with an optional AI baby-face prediction that computes Mendelian genetics (Punnett squares) from the traits you enter before any image is generated. Tracking, tools, PDF reports and family sharing are free; only AI predictions use credits — 5 starter credits cover your first Scientific prediction — and no subscription is required. Requires iOS 26 or later. Not available on Android.
- Q2
Do I get any free prediction credits?
Yes — every new account gets 5 starter credits, enough for one free Scientific prediction (4 credits). After that, buy a credit pack whenever you want more; credits never expire.
- Q3
What happens to my photos?
Parent photos are used only to run your prediction and are deleted from our servers a few hours after it finishes — never before the prediction completes, and at least 4 hours after upload. The prediction itself — the report and the generated images — is removed from your account after 48 hours by default; you can choose 24 hours, 7 days or 30 days in Settings. Scientific mode sends no photos at all.
Everything above — free to download
Free to download, with 32 free tools and no subscription required for predictions — they're paid with credits, and your first one is free. To our knowledge the only mobile app that runs real Mendelian genetics before it generates an image, ships vaccination schedules for 240 countries, and speaks 32 in-app languages.
5 starter credits · first Scientific prediction free
- Real Mendelian genetics (not just face blending)
- Vaccination schedules for 240 countries
- 32 in-app languages
- 32 free tools (no credits required)
- Prediction photos auto-delete (privacy-first)
- All regional data bundled in the app — works offline