Hush vs Cycle Sync
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Hush
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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 ā start dates, end dates, optional notes ⢠Symptom logging ā mood, energy, pain, plus quick-tap flags for cramps, bloating, headache, fatigue, tender chest, acne ⢠Phase detection ā 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 ā "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 ā emphasizes fertile window, adds BBT, ovulation tests, cervical fluid logging ⢠Pregnancy ā gestational week tracker, due date, week-by-week development blurbs ⢠Postpartum ā return-of-cycle tracking ⢠Perimenopause ā widens cycle tolerance, hot flash logging, no false "overdue" alerts FERTILITY TREATMENT SUPPORT (TTC mode) ⢠Custom medication reminders (you set name, dose, times ā 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 ā 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 ā 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 ā printable 6-month summary for your OB-GYN ⢠JSON import ā restore from backup, switch phones easily ⢠One-tap full data wipe in Settings ā 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" ā 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 ā 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 ā we reply within 2 business days.
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. NO AI. NO GUESSING. 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. WHAT'S FREE ⢠Cycle logging and phase prediction ⢠Calendar sync (Apple Calendar and Google Calendar) ⢠Dashboard with today's phase and a 7-day overview ⢠Basic conflict detection ⢠Five notification types including phase transitions, daily insights, and period predictions ⢠Cycle history for the last three cycles ⢠Focus and rest customization for each phase ⢠Light, Dark, and System themes WHAT'S PRO Unlock everything: ⢠Unlimited reschedule suggestions ⢠One-tap rescheduling with undo ⢠Advanced conflict detection ⢠Unlimited phase history ⢠Priority notifications ⢠Tomorrow's preview alerts ⢠Re-engagement reminders 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 in-app purchases: Hush at none against Cycle Sync's 3. Hush also leads on iOS requirement (15.0 vs 18.2). Cycle Sync's advantage is update cadence (fortnightly vs every 2 months). On price, ads and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Cycle Sync sells 3 in-app purchases, starting at $4.99 per 7 days. Hush asks for nothing beyond the download.
Hush ships an update every 2 months, Cycle Sync fortnightly. Both last shipped on September 10, 2026.
| Parameter | Hush | Cycle Sync |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Fortnightly ā better |
| Ads | No | No |
| In-app purchases | No ā better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 ā better | 18.2 |
| Further details ā not scored | ||
| Size | 8 MB | 55 MB |
| Age rating | 12+ | 4+ |
| Developer | Eric Stewart | Amit Kairon |
In-app purchases
Hush
No in-app purchases
Cycle Sync
- CycleSync Pro ā Weekly$4.997 Days
- CycleSync Pro$9.991 Month
- CycleSync Pro$59.991 Year





