Comparison

PMOSense vs LineCheck

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

Head to head
About

PMOSense

Features
Read full description

PMOSense is a cycle tracking app built specifically for people with PCOS, PMOS, and irregular cycles — where typical 28-day cycle apps often fall short. Most cycle trackers assume your cycle is regular and predictable. PMOSense doesn't. It helps you understand your unique patterns using your logged body signs, cycle history, and fertility data. WHAT YOU CAN TRACK • Period start, end, and flow • LH test strips with automatic camera-based result reading • Basal body temperature (BBT) • Cervical fluid • Energy levels • Mood and stress • Symptoms and custom symptom tracking • Daily notes • Medications and supplements related to cycle health, fertility, and PCOS management WHAT YOU GET • Fertility window estimates that adapt to irregular cycles • Ovulation insights using LH, BBT, and cervical fluid together • Cycle predictions with realistic date ranges instead of a single fixed date • Prediction reviews that compare previous predictions with actual cycle outcomes • Recent cycle timeline showing your logged signs and cycle history • Personalized cycle insights based on your logged data • Mood, stress, symptom, and energy trend insights • Identification of possible anovulatory cycles and irregular cycle patterns • Medication and supplement reminders • Doctor Report — a clear cycle summary you can share with your healthcare professional BUILT FOR PCOS & IRREGULAR CYCLES Whether you experience long cycles, short cycles, irregular periods, or cycles without ovulation, PMOSense is designed to work with real-world cycle variability instead of assuming a perfect 28-day cycle. Confidence indicators help explain when predictions are based on strong patterns and when additional data may improve future insights. PRIVATE BY DEFAULT Your data belongs to you. PMOSense does not sell your personal health information. You can manage, export, or delete your data at any time.

About

LineCheck

Track pregnancy and ovulation tests with AI analysis and cycle predictions. Monitor your pregnancy week-by-week and log body signs. Integrates with Apple Health for comprehensive fertility insights.

Highlights
  • Scan and track pregnancy tests
  • LH/OPK ovulation tracking
  • Week-by-week pregnancy monitoring
  • AI line progression analysis
  • Apple Health integration
  • Cycle predictions
  • Doctor visit reports
Features
Read full description

LineCheck is your all-in-one pregnancy test tracker, LH/OPK ovulation tracker and TTC companion: test photos, cycle predictions, Apple Health, charts, comparisons, insights and reminders in one private app. TRACK PREGNANCY TESTS Scan or import pregnancy test photos. Review visible, faint or unclear lines, add notes and keep every test in your history. Use a free local scan, enter the result yourself, or let Luna's on-device AI read and explain the line. TRACK LH & OVULATION TESTS (OPK) Follow test-to-control ratios and low, rising, high or peak stages toward your LH surge. A Peak test can confirm ovulation and update your predictions. PREGNANCY TRACKING Follow your pregnancy week by week, with due-date estimates and growth updates. Keep appointments, visit notes and pregnancy photos together in one place. Use helpful tools like movement counting and contraction timing when you need them. You can switch to pregnancy mode during onboarding or any time from Home or Settings. COMPARE TESTS SIDE BY SIDE Compare pregnancy or ovulation tests to follow line progression and LH trends, or use AI Compare. PREDICTIONS THAT LEARN FROM YOU LineCheck estimates your fertile window, best testing days, ovulation, next period, cycle day and DPO from your own history and setup answers. Estimates widen honestly when cycles are irregular and update when a Peak test or temperature rise confirms ovulation. WHAT YOUR BODY IS TELLING US LineCheck watches your tests, daily logs and Apple Health data and tells you what it notices, like a temperature rise that backs up ovulation or short sleep that could delay it. APPLE HEALTH, FREE FOR EVERYONE Bring in periods, BBT, Apple Watch wrist temperature, cervical mucus, symptoms, sleep, heart rate, HRV, activity and weight. Temperature, weight and water you log are saved back to Health. TRENDS & CHARTS See line progression, OPK, BBT, cycle and period length, symptom and mood charts. With Pro, explore Cycle History, luteal phase, prediction accuracy, body rhythms, symptom timing and everything LineCheck has noticed. AI PROGRESSION ANALYSIS Select three or more saved tests and Luna explains the trend in plain language. DOCTOR VISIT REPORT Export a PDF of your charts, cycle history, symptoms and test progression to share with your doctor. ENHANCE PHOTOS Crop and adjust brightness, contrast, exposure, sharpness, greyscale and inversion to review faint lines. Adjustments do not change the physical result. LOG BODY SIGNS Log symptoms, moods, cervical mucus, BBT, weight, water, supplements, sex and insemination, in kilograms, pounds or stone. ASK LUNA Luna is your context-aware fertility assistant, using your tests, cycle timing, body signs and Apple Health data. Chat requires an internet connection. WIDGETS & REMINDERS Home Screen widgets show your countdown and today's plan. Set reminders for retesting, ovulation testing, fertile days or anything else. YOUR DATA Private iCloud sync, JSON export and in-app data deletion. FEATURES • Pregnancy and LH/OPK test tracking • On-device AI test review • Comparisons and AI Progression Analysis • Predictions that learn from your cycles • Ovulation confirmed by Peak tests or temperature • Free Apple Health sync • Cycle history, luteal phase and accuracy trends • OPK, BBT, symptom, mood and body rhythm charts • Photo enhancement • Home Screen widgets and reminders • PDF doctor report and JSON export • iCloud sync IMPORTANT INFORMATION LineCheck is not a medical device and does not diagnose or confirm pregnancy, infertility, ovulation or any medical condition. Results, ratios, estimates, charts, comparisons and AI feedback are informational only. Follow your test instructions and use the physical test as your final reference. Consult a qualified healthcare professional before making medical decisions. Medical sources are available under Settings > Medical Sources. Terms of Use: https://uselinecheck.com/terms Privacy Policy: https://uselinecheck.com/privacy

Screenshots

PMOSense4 screens
LineCheck4 screens

Verdict

The call

The clearest difference is in-app purchases: PMOSense at none against LineCheck's 3. PMOSense also leads on ads (none vs shown) and iOS requirement (15.0 vs 18.0). LineCheck's advantage is update cadence (every 3 days vs weekly). On price 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. LineCheck sells 3 in-app purchases, starting at $6.99 per month. PMOSense asks for nothing beyond the download.

UpkeepUpdate frequency

PMOSense ships an update weekly, LineCheck every 3 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 5 level
PMOSense versus LineCheck: the parameters behind the verdict, then further details
ParameterPMOSenseLineCheck
PriceFreeFree
Rating—3.5 (2 ratings) — better
Number of ratings—2 — better
Update frequencyWeeklyEvery 3 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size50 MB123 MB
Age rating12+4+
DeveloperGwenne MosesMike Whelan

In-app purchases

None

PMOSense

No in-app purchases

3 purchases

LineCheck

Subscriptions2
  • LineCheck Pro Monthly$6.991 Month
  • LineCheck Pro Annual$39.991 Year
One-time1
  • LineCheck Pro Lifetime$89.99

Questions

Is PMOSense free?
PMOSense is free to download, with no in-app purchases.
Is LineCheck free?
LineCheck is free to download, with in-app purchases available.
Do PMOSense or LineCheck have ads?
LineCheck shows ads; PMOSense does not.
Which is updated more often, PMOSense or LineCheck?
PMOSense ships an update weekly, and LineCheck every 3 days. Most recently, PMOSense was updated on October 28, 2026 and LineCheck on October 31, 2026.

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