Hush vs Cycle Sync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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Hush is a private period tracker that keeps every entry on your phone. No account. No servers. No ads. No tracking SDKs. We can't sell what we never collect. FREE, FOREVER • Period logging with start, end and notes • Daily check-ins for mood, energy, pain, cramps, bloating, headache and more • Your own custom symptoms • Next period and ovulation estimates that improve as you log • Calendar with phase colors and your history • Cycle length history and averages • Reminders for periods, ovulation and daily check-ins • Life-stage modes: cycle tracking, trying to conceive, pregnancy, postpartum and perimenopause • Fertility treatment support: medication reminders, dose log, injection site rotation, trigger shot and two-week-wait countdowns • Learn library with 12 articles, bundled in the app • JSON and CSV export and import, and one-tap delete of everything HUSH PLUS (OPTIONAL) • Your patterns: which symptoms show up before your period, cycle after cycle • Appointment summary of what you logged • Doctor visit PDF for your OB-GYN, ready to attach in MyChart or your clinic's portal • Calendar sync of predicted periods and fertile windows • Face ID lock Hush Plus Yearly is $19.99 per year (US) with a one-week free trial for new subscribers. It renews automatically unless cancelled at least 24 hours before the end of the period, and you can manage it in your Apple ID settings. Hush Plus Lifetime is a one-time $39.99 (US) purchase. Prices vary by region. If you used Hush before Hush Plus, every Plus feature is already yours, free. PRIVATE BY DESIGN • No account, login or email • Purchases go through Apple. Hush never sees your payment details • No analytics, no crash reporter, no ad or attribution SDKs • App Store privacy label: Data Not Collected NOT MEDICAL ADVICE Hush is not a contraceptive and not a diagnostic tool. Predictions are estimates based on what you log. Talk to a qualified clinician about medical decisions. Terms of Use: https://sais-studios.github.io/hush/terms.html Privacy Policy: https://sais-studios.github.io/hush/privacy.html
Cycle Sync
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CYCLE-AWARE CALENDAR CycleSync helps professional women align their work schedules with their natural menstrual cycle phases. Instead of fighting through low-energy days, you get smart suggestions to move demanding meetings to days when your focus and energy peak. WORK WITH YOUR RHYTHM, NOT AGAINST IT Your cycle isn't an obstacle. It's a compass. Menstrual Phase (Winter) Rest and recovery. Reschedule high-stakes meetings. Follicular Phase (Spring) Rising energy. Schedule creative work and planning. Ovulation Phase (Summer) Peak performance. Take on negotiations and leadership. Luteal Phase (Autumn) Focused wind-down. Finish projects and organize. SMART RESCHEDULING CycleSync connects to your calendar and automatically detects: • Events on heavy-flow days • Events on rest-phase days • Dense meeting days during focus phases (3+ events) One tap on a conflict card opens the Time Slot Picker. Your available slots on better days are pre-calculated. Reschedule in seconds. An undo option gives you 10 seconds to reverse. RULES, NOT GUESSWORK. The recommendation engine is rule-based: 1. Your cycle history predicts your phase for any date. 2. Your phase preferences determine focus or rest classifications. 3. Your calendar events are flagged when they conflict with your classifications. 4. Available slots on recommended-phase days enable one-tap rescheduling. EVERYTHING IN ONE SUBSCRIPTION An active CycleSync Pro subscription unlocks the whole planner: • Cycle logging, phase prediction and a 14-day cycle outlook • Dashboard with today's phase and a 7-day week view • Calendar sync with Apple Calendar and Google Calendar • Conflict detection and unlimited reschedule suggestions • One-tap rescheduling with a 10-second undo • Five notification types: reschedule alerts, phase transitions, period predictions, tomorrow's preview and re-engagement nudges • Insights: energy curve, seasonal capacities and full cycle history • Cycle import from Apple Health • Export your cycle history as JSON or CSV • Light, Dark and System themes BEFORE YOU SUBSCRIBE Onboarding and the plan comparison are free, so you can see how CycleSync works before you pay. The planner opens once your subscription is active, and everything you have already logged stays on your device. Weekly, monthly and yearly plans are available in the app. PRIVACY FIRST • All cycle data is stored locally on your device • No cloud sync and no tracking • Health data is read-only from Apple Health • Export your data anytime as JSON or CSV HOW TO START 1. Open CycleSync and log your last period start date. 2. Connect your calendar using Apple Calendar or Google Calendar. 3. Set your typical cycle length (default: 28 days). 4. Review your dashboard. Suggested reschedules appear automatically. Download CycleSync and work with your natural rhythm. By subscribing, you agree to our Terms of Use (EULA): https://cyclesync.tunnxo.com/legal/eula.html Privacy Policy: https://cyclesync.tunnxo.com/legal/privacy.html
Screenshots
Verdict
The clearest difference is ads: Hush at none against Cycle Sync's shown. Hush also leads on iOS requirement (15.0 vs 18.2). On price, update cadence, in-app purchases 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
Both are free to download. Hush sells 2 in-app purchases, starting at $19.99 per year and Cycle Sync sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Hush ships an update every 2 weeks, Cycle Sync fortnightly. The most recent releases landed on November 13, 2026 and November 5, 2026 respectively.
| Parameter | Hush | Cycle Sync |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 3 MB | 82 MB |
| Age rating | 12+ | 4+ |
| Developer | Eric Stewart | Amit Kairon |
In-app purchases
Hush
- Hush Plus Yearly7 Days trial$19.991 Year
- Hush Plus Lifetime$39.99
Cycle Sync
- CycleSync Pro — Weekly3 Days trial$4.997 Days
- CycleSync Pro7 Days trial$9.991 Month
- CycleSync Pro14 Days trial$59.991 Year









