--- title: "Sync - Private Period Tracker - Reviews, Revenue and Downloads in United States | Apple App Store" description: "Sync Period tracks cycles locally and supports private sharing with a partner or friend. Log periods, symptoms, moods, and notes; view your calendar and pattern summaries; set optional reminders; and" --- # Sync - Private Period Tracker — United States > Private cycle and partner sync ![Sync App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/9d/d3/17/9dd31763-4d02-655e-0cb0-5fe7bd147a92/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png) **Developer:** [Wei Jian Wong](https://apptail.io/developer/wei-jian-wong-snxio) **Category:** Health Fitness **Rating:** 5.0/5 (1 ratings) **Price:** Free **Bundle ID:** com.giraffeguru.periodapp **Store:** Apple App Store **Country:** United States **Version:** 2.0.1 (released 2026-08-31) **Original Release:** 2025-04-03 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6743987631) **AppTail Page:** [https://apptail.io/app/sync-private-period-tracker-yGJv/united-states](https://apptail.io/app/sync-private-period-tracker-yGJv/united-states) ## Sync Description Sync Period tracks cycles locally and supports private sharing with a partner or friend. Log periods, symptoms, moods, and notes; view your calendar and pattern summaries; set optional reminders; and import supported Flo, Clue, Drip, or generic CSV data after reviewing what Sync can recognize. Your cycle history is encrypted on your device. Private predictions adapt to your recent cycle history and confirmed corrections entirely on your device. Sync shows a likely-start window and confidence level, learns recurring pre-period patterns, and can use an enabled BBT signal or positive ovulation test without uploading those health details. Predictions become more cautious when history is sparse or variable. Partner sharing is optional and off by default. You choose which supported cycle details to share. Updates are end-to-end encrypted and require the complete private invite to open. Each encrypted relay update expires after no more than 30 days; active sharing renews that rolling expiration when a new update is published. Recent physical symptoms and flow, sex-drive and intimacy check-ins, and moods are three separate opt-ins that can each be turned off again. Intimate sharing is off by default and never indicates consent. Discharge, medications, written notes, and other sexual details remain private. Sync Period has no ads, no behavioral analytics SDKs, and no required account. You can export a private backup or permanently delete local app data at any time. Cycle predictions and pattern summaries are estimates. Sync Period does not provide diagnosis, contraception, or medical advice. ## Sync Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/90/26/06/9026063c-76f4-f1b4-57d9-955163c512b3/01-home.png/1320x2868.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/8c/08/73/8c087315-24fa-60f3-742a-65e8ffbd26b7/02-calendar.png/1320x2868.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/3b/67/b2/3b67b29a-a5cb-372d-8e5f-28c580a14229/03-insights.png/1320x2868.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/72/0a/84/720a8461-c80c-382d-d526-a0f52ecc3602/04-private-sharing.png/1320x2868.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/f5/f1/53/f5f15315-def8-0f36-d31b-46192ee8caa7/05-partner-view.png/1320x2868.png) ## Sync Rating Breakdown in United States - 5 stars: 1 (100%) - 4 stars: 0 (0%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 0 (0%) ## Sync Reviews in United States ### ***** "Amazing!" Such a thoughtful and detailed/straight forward period app - includes everything I need to track my period and also helps explain the different phases of my cycle and what to expect. ALSO no paid ads or any of those marketing gimmicks that auto pop up like other period apps out there! -- Bunny4043, 2025-04-07 [View all Sync reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews) ## Apps Similar to Sync - [period Privacy period](https://apptail.io/app/period-privacy-period-iQsc/united-states) - [The Bela App](https://apptail.io/app/the-bela-app-vAQo/united-states) - [Besti Period Tracker](https://apptail.io/app/besti-period-tracker-onBv/united-states) - [Cira: Period & Cycle Calendar](https://apptail.io/app/cira-period-cycle-calendar-NoUw/united-states) - [Period Tracker Mini](https://apptail.io/app/period-tracker-mini-wHpx/united-states) - [Periodt Tracking](https://apptail.io/app/periodt-tracking-Odvx/united-states) - [Private Period & Cycle Tracker](https://apptail.io/app/private-period-cycle-tracker-imTx/united-states) - [Eleanor: Cycles with Events](https://apptail.io/app/eleanor-cycles-with-events-ZItz/united-states) - [Period Tracker Cycle Ovulation](https://apptail.io/app/period-tracker-cycle-ovulation-zEZz/united-states) - [Peach: PCOS Coach & Tracker](https://apptail.io/app/peach-pcos-coach-tracker-LCyA/united-states) ## Sync Available In - [Canada](https://apptail.io/app/sync-private-period-tracker-yGJv/canada) - [United States](https://apptail.io/app/sync-private-period-tracker-yGJv/united-states) - [Australia](https://apptail.io/app/sync-private-period-tracker-yGJv/australia) - [Barbados](https://apptail.io/app/sync-private-period-tracker-yGJv/barbados) - [Brunei](https://apptail.io/app/sync-private-period-tracker-yGJv/brunei) - [Brazil](https://apptail.io/app/sync-private-period-tracker-yGJv/brazil) - [Belize](https://apptail.io/app/sync-private-period-tracker-yGJv/belize) - [Switzerland](https://apptail.io/app/sync-private-period-tracker-yGJv/switzerland) - [Chile](https://apptail.io/app/sync-private-period-tracker-yGJv/chile) - [Colombia](https://apptail.io/app/sync-private-period-tracker-yGJv/colombia) - [United Kingdom](https://apptail.io/app/sync-private-period-tracker-yGJv/united-kingdom) - [Grenada](https://apptail.io/app/sync-private-period-tracker-yGJv/grenada) - [Ghana](https://apptail.io/app/sync-private-period-tracker-yGJv/ghana) - [Hong Kong SAR China](https://apptail.io/app/sync-private-period-tracker-yGJv/hong-kong) - [India](https://apptail.io/app/sync-private-period-tracker-yGJv/india) - [Jamaica](https://apptail.io/app/sync-private-period-tracker-yGJv/jamaica) - [Japan](https://apptail.io/app/sync-private-period-tracker-yGJv/japan) - [Cayman Islands](https://apptail.io/app/sync-private-period-tracker-yGJv/cayman-islands) - [Mauritius](https://apptail.io/app/sync-private-period-tracker-yGJv/mauritius) - [Malaysia](https://apptail.io/app/sync-private-period-tracker-yGJv/malaysia) - [Namibia](https://apptail.io/app/sync-private-period-tracker-yGJv/namibia) - [Nigeria](https://apptail.io/app/sync-private-period-tracker-yGJv/nigeria) - [Nepal](https://apptail.io/app/sync-private-period-tracker-yGJv/nepal) - [Philippines](https://apptail.io/app/sync-private-period-tracker-yGJv/philippines) - [Pakistan](https://apptail.io/app/sync-private-period-tracker-yGJv/pakistan) - [Suriname](https://apptail.io/app/sync-private-period-tracker-yGJv/suriname) - [Tunisia](https://apptail.io/app/sync-private-period-tracker-yGJv/tunisia) - [Türkiye](https://apptail.io/app/sync-private-period-tracker-yGJv/turkey) - [Uzbekistan](https://apptail.io/app/sync-private-period-tracker-yGJv/uzbekistan) - [United Arab Emirates](https://apptail.io/app/sync-private-period-tracker-yGJv/united-arab-emirates) - [South Africa](https://apptail.io/app/sync-private-period-tracker-yGJv/south-africa) - [Angola](https://apptail.io/app/sync-private-period-tracker-yGJv/angola) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. 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