Comparison

Hush vs Knowing

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Hush

This privacy-focused app tracks menstrual cycles, symptoms, and fertility phases using on-device data. It offers customizable logging, pattern detection, and educational content without requiring an account or internet connection.

Highlights
  • On-device data storage
  • Period and symptom logging
  • Phase detection (menstrual, follicular, ovulation, luteal)
  • Fertility and pregnancy tracking modes
  • Customizable symptom flags
  • Data export (JSON, CSV, iCal)
  • Educational content library
Features
Read full description

Hush is a privacy-first menstrual cycle tracker that does one thing: keeps every byte of your data on your device. No account. No servers. No ads. No tracking SDKs. We literally cannot sell what we never collect. WHAT'S INCLUDED (FREE) • Period logging — start dates, end dates, optional notes • Symptom logging — mood, energy, pain, plus quick-tap flags for cramps, bloating, headache, fatigue, tender chest, acne • Phase detection — menstrual, follicular, ovulation, luteal • Phase-aware ambient design that shifts color through your cycle • Next period and ovulation forecast that refines as you log • Custom user-defined symptom flags • On-device symptom pattern engine — "Cramps tend to show up 2 days before your period in 5 of your last 6 cycles" • Symptom pattern detection across cycles • Calendar view with phase-colored history • Light, dark, and system themes LIFE-STAGE MODES • Cycle tracking (default) • TTC — emphasizes fertile window, adds BBT, ovulation tests, cervical fluid logging • Pregnancy — gestational week tracker, due date, week-by-week development blurbs • Postpartum — return-of-cycle tracking • Perimenopause — widens cycle tolerance, hot flash logging, no false "overdue" alerts FERTILITY TREATMENT SUPPORT (TTC mode) • Custom medication reminders (you set name, dose, times — we fire the alarms) • Dose log + injection site rotation tracker (helps avoid bruising) • Trigger shot countdown • Two-week-wait countdown • Stim cycle day counter • Never gives medical advice — your RE's protocol is yours; Hush is the reminder system + journal LEARN LIBRARY 12 in-app articles on phases, PMS vs PMDD, perimenopause, PCOS, iron deficiency, fertile windows, sleep through the cycle, birth control's effect on tracking, and more. Bundled in the app — no network calls. DATA YOU OWN • One-tap JSON or CSV export of your entire history • iCal subscription so your cycle shows in Calendar • Doctor visit PDF — printable 6-month summary for your OB-GYN • JSON import — restore from backup, switch phones easily • One-tap full data wipe in Settings → Danger zone DESIGNED FOR PRIVACY, NOT JUST MARKETED THAT WAY • No account, no login, no email required • Local-first storage with iOS sandboxing • No third-party SDKs except Apple's StoreKit • No crash reporter, no analytics, no attribution • Open, machine-readable JSON export so your history is portable • App Store privacy nutrition label: "Data Not Collected" — audited by Apple NOT MEDICAL ADVICE Hush is educational. It is not a contraceptive and not a fertility diagnostic. Predictions are statistical estimates based on what you log — accuracy improves with more cycles. Always talk to a qualified healthcare provider for medical decisions. GET IN TOUCH Questions or feedback? Email support@cyclekit.app — we reply within 2 business days.

About

Knowing

Features
Read full description

Knowing turns what your body is already telling you into one clear answer a day. SCAN YOUR OVULATION TEST Point the camera at an LH strip and Knowing measures the test and control lines for you — no more squinting at two pink smudges in bad bathroom light. It plots your surge across the cycle so you can see it coming, not just notice it after the fact. The photo is deleted once the measurement is taken. THE SIX DAYS THAT MATTER The fertile window is six days long and ends on the day you ovulate. Knowing shows you where you are in it — today, in plain language, above the fold — and builds its estimate from what you actually log: your periods, your tests, your temperature, your cervical mucus. WHATEVER YOU ARE HERE FOR Four modes, and the whole app changes to match: trying to conceive, pregnant, just tracking, or avoiding pregnancy. Pregnancy mode follows your weeks, your due date and your blood pressure readings. LOG WHAT MATTERS, SKIP WHAT DOESN'T Flow, cramps, mood, mucus, temperature, medication, blood pressure, notes. One tap each. Nothing is required. EVERY CLAIM HAS A SOURCE Where Knowing tells you something about your body, it tells you where that came from and how strong the evidence is. Where the science is weak, it says so — including the moon, which is shown because it is lovely, and clearly marked as decoration that predicts nothing. ASK, PRIVATELY Ask questions about your own cycle and get answers from Apple Intelligence running entirely on your iPhone. Nothing is sent anywhere. BUILT TO BE PRIVATE There is no account and no sign-up, because there is no server. Your cycle data lives on your iPhone. Optional iCloud sync keeps it in your own private iCloud, and you can lock the app behind Face ID and export an encrypted backup whenever you like. Knowing is not a contraceptive and does not diagnose anything. It is a record of your body and a clear reading of it. ——— Knowing Premium unlocks the full app. Yearly, monthly, or a one-time lifetime purchase. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours of the end of the current period. You can manage or cancel your subscription in your Apple ID settings at any time. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://snrgwa-bot.github.io/knowing-app/privacy

Screenshots

Hush1 screens
Knowing4 screens

Verdict

The call

The clearest difference is in-app purchases: Hush at none against Knowing's 3. Hush also leads on iOS requirement (15.0 vs 17.0). Knowing's advantage is update cadence (every 10 days vs every 4 weeks). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Knowing sells 3 in-app purchases, starting at $9.99 per month. Hush asks for nothing beyond the download.

UpkeepUpdate frequency

Hush ships an update every 4 weeks, Knowing every 10 days. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.

Scorecard3 real differences · 6 level
Hush versus Knowing: the parameters behind the verdict, then further details
ParameterHushKnowing
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 4 weeksEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size10 MB15 MB
Age rating12+12+
DeveloperEric StewartDUMITRU BUMBU

In-app purchases

None

Hush

No in-app purchases

3 purchases

Knowing

Subscriptions2
  • Premium Monthly$9.991 Month
  • Premium Yearly$59.991 Year
One-time1
  • Lifetime$149.99

Questions

Is Hush free?
Hush is free to download, with no in-app purchases.
Is Knowing free?
Knowing is free to download, with in-app purchases available.
Do Hush or Knowing have ads?
Neither Hush nor Knowing shows ads.
Which is updated more often, Hush or Knowing?
Hush ships an update every 4 weeks, and Knowing every 10 days. Most recently, Hush was updated on November 5, 2026 and Knowing on November 9, 2026.

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