Comparison

Smar Pair vs PairCare Shared Period Tracker

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

Head to head
About

Smar Pair

Features
Read full description

Smar Pair APP是一款配合智能手环设备的软件,该APP是通过蓝牙和手环建立连接通讯,能检测和评估用户的运动数据、睡眠质量等信息,帮助使用者更好,更方便的了解和调整自身的生活作息状况。 注意事项: 1,运动功能会使用 GPS定位,在后台持续运行GPS功能可能会大幅消耗电池电量 2,Smar Pair已接入HealthKit,可同步运行数据到健康 免责声明: Smar Pair 所产生的一切数据仅用于参考,不能当作健康状况依据。在使用 Smar Pair和做出任何医疗决定之前,请寻求医生的建议。

About

PairCare Shared Period Tracker

This app helps users track their menstrual cycles, predict ovulation, and share health insights with a partner. It offers personalized advice and self-care tips based on cycle phases, supporting users through fertility, conception, and pregnancy.

Highlights
  • AI-powered cycle and ovulation predictions
  • Personalized reminders for cycle phases
  • Shared health insights with partners
  • TTC and pregnancy tracking modes
  • Daily advice and self-care tips
  • Symptom and mood logging
  • Cycle trend analysis
Features
Read full description

Trusted by over 1 million users in Japan,
PairCare is a period and health tracking app designed to help you understand your menstrual cycle — and share that understanding with your partner. PairCare helps you track your cycle, predict upcoming periods and ovulation, identify fertile windows, and stay connected through shared schedules and health insights. Whether you’re managing your cycle, preparing for pregnancy, trying to conceive, or navigating pregnancy, PairCare supports you through every stage of your journey. Why Choose PairCare? • Track your menstrual cycle with AI-powered predictions for upcoming periods and ovulation. • Receive gentle reminders before your expected period and key cycle phases. • Share your cycle, schedule, and health status with your partner, family member, or someone you trust.
 • Connect accounts in just three simple steps and choose what information to share.
 • Make planning, communication, and TTC more collaborative by keeping partners informed and involved. • Switch seamlessly between three modes: period & health tracking, trying to conceive, and pregnancy tracking. • Continue using PairCare as your needs and life stage change. • Receive daily advice and self-care tips tailored to your current cycle phase. • Insights update every day based on your cycle. • Easily log physical symptoms such as cramps or headaches, as well as emotional states like irritability or low mood. • View recurring symptoms, moods, and cycle trends to better understand your body over time. • Use insights to prepare for certain phases, plan rest or time off, and support conversations with healthcare providers. How PairCare works 1. Enter your last period date and typical cycle length 2. PairCare predicts your next period and ovulation 3. Receive reminders as your next period approaches PairCare is recommended for people who want to: • Know their upcoming period or ovulation timing • Track and analyze physical and emotional symptoms • Receive cycle-based insights and guidance • Share schedules and health information with a partner • Help their partner better understand menstruation • Navigate TTC or pregnancy together as a couple Enjoy more features with PairCare Premium • Advanced symptom and mood analysis with personalized insights • Cycle length and period duration analysis • Fertile timing insights • Increased notification options • Partner notifications after health logs • Flexible sharing controls for partner visibility • Weight and basal body temperature charts • Google Calendar integration • Ad-free experience • Access to full cycle history • Photo logging for personal records Please note: PairCare does not provide medical diagnosis or treatment.
Predictions and insights are for informational purposes only and are not a substitute for professional medical advice.
Always consult a qualified healthcare provider for any health concerns or decisions. Privacy Policy: https://paircare.jp/document/privacy/en/ Contact: info@paircare.jp

Screenshots

Smar Pair4 screens
PairCare Shared Period Tracker4 screens

Verdict

The call

The clearest difference is in-app purchases: Smar Pair at none against PairCare Shared Period Tracker's 10. Smar Pair also leads on iOS requirement (13.0 vs 15.1). PairCare Shared Period Tracker's advantage is update cadence (fortnightly vs every 5 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. PairCare Shared Period Tracker sells 10 in-app purchases, starting at $5.99 per month. Smar Pair asks for nothing beyond the download.

UpkeepUpdate frequency

Smar Pair ships an update every 5 weeks, PairCare Shared Period Tracker fortnightly. The most recent releases landed on October 18, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Smar Pair versus PairCare Shared Period Tracker: the parameters behind the verdict, then further details
ParameterSmar PairPairCare Shared Period Tracker
PriceFreeFree
Rating—4.7 (13 ratings) — better
Positive reviews—18.2% of reviews
Number of ratings—13 — better
Update frequencyEvery 5 weeksFortnightly — better
AdsYesYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size192 MB115 MB
Age rating4+4+
DeveloperSaiel International Co.,ltdEntale, Inc.

In-app purchases

None

Smar Pair

No in-app purchases

10 purchases

PairCare Shared Period Tracker

Subscriptions10
  • Pill Plan 1-Mo Sub$5.991 Month
  • PairCare Prem 1-Mo Sub$9.991 Month
  • Pill Plan 6-Mo Sub$17.996 Months
Show 7 more
  • PairCare Prem 3-Mo Sub$19.993 Months
  • PairCare Prem 3-Mo Sub (1 Mo Free)1 Month trial$19.993 Months
  • Pill Plan 12-Mo Sub$23.991 Year
  • PairCare Prem 12-Mo Sub$27.991 Year
  • PairCare Prem 12-Mo Sub (1 Mo Free)1 Month trial$27.991 Year
  • PairCare Prem 12-Mo Sub (1 Mo Free)1 Month trial$39.991 Year
  • PairCare Prem 12-Mo Sub$39.991 Year

Questions

Is Smar Pair free?
Smar Pair is free to download, with no in-app purchases.
Is PairCare Shared Period Tracker free?
PairCare Shared Period Tracker is free to download, with in-app purchases available.
Do Smar Pair or PairCare Shared Period Tracker have ads?
Both Smar Pair and PairCare Shared Period Tracker show ads.
Which is updated more often, Smar Pair or PairCare Shared Period Tracker?
Smar Pair ships an update every 5 weeks, and PairCare Shared Period Tracker fortnightly. Most recently, Smar Pair was updated on October 18, 2026 and PairCare Shared Period Tracker on October 25, 2026.

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