Cardiogram vs PMOSense
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cardiogram
Monitor your heart rate and key cardio signals in real time with a clear, scrolling graph. Designed for continuous feedback, it offers insights into energy burn and breathing rate without the need to manage workout sessions.
- Live heart rate monitoring
- Scrolling cardio signal graph
- Energy burn insights
- Breathing rate tracking
- Heart variability data
- Continuous monitoring
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Track your heart in real time, right from your wrist. This app requires an Apple Watch, and includes the watch app free. This app shows live heart rate with a smooth scrolling graph, along with key cardio signals like energy burn, breathing rate, and variability, designed for clarity at a glance. Built for Apple Watch first, it focuses on continuous monitoring, not workouts. No clutter, no sessions to manage — just instant feedback on how your body is responding moment to moment. An optional iPhone companion mirrors your data on a larger screen. Perfect for casual fitness, stress awareness, or simple curiosity about your heart throughout the day. The app comes with a companion watch app you need to run at the same time.
PMOSense
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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.
Screenshots
Verdict
The clearest difference is price: PMOSense at Free against Cardiogram's $0.99. PMOSense also leads on update cadence (weekly vs every 3 weeks). Cardiogram's advantage is chart position (#141 vs unranked). On ads, in-app purchases, device support and iOS requirement 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
PMOSense is free to download; Cardiogram costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Cardiogram ships an update every 3 weeks, PMOSense weekly. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.
| Parameter | Cardiogram | PMOSense |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 1.3 (6 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #141 — better | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 50 MB |
| Age rating | 4+ | 12+ |
| Developer | JOhn Lyons | Gwenne Moses |
In-app purchases
Cardiogram
No in-app purchases
PMOSense
No in-app purchases









