Rapid Cycling vs Eunoia Signals
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rapid Cycling
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This app is designed to support individuals living with bipolar and unipolar mood disorders by helping them track and better understand their behavioral patterns. Log your daily mood, energy, sleep, and activity levels using an intuitive emoji-based system with a legend to guide interpretation. View your progress through weekly, monthly, and yearly charts, and reflect on your entries in a comprehensive daily journal. Add personal notes, record specific emotions tied to real-life situations, and take clinically recognized assessments: the Beck Depression Inventory and the Young Mania Rating Scale. All test results are saved to your journal. Easily export your journal entries to a PDF for any date range - ideal for sharing with your therapist or doctor during consultations. All data is stored securely on your device only. Your responses are private and will never be automatically shared by the app. Disclaimer: This app is not intended to provide medical diagnosis or treatment. It is designed for personal tracking and informational purposes only. Please consult with a qualified healthcare professional before making any decisions based on information from this app.
Eunoia Signals
This app helps you understand your mental state by tracking your mood, energy levels, and feelings. It analyzes your patterns over time, optionally integrating biometric data from Apple Health for a comprehensive view. Designed for personal awareness, it offers insights into mood shifts and trends.
- Daily mood and energy check-ins
- Optional notes and tags for nuance
- Personal signal score based on patterns
- Integration with Apple Health biometrics
- Trend visualization over time
- On-device data processing for privacy
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Eunoia Signals is a personal mood tracking and pattern awareness tool designed for people who want to understand their mental states over time — especially those managing bipolar disorder or monitoring for signs of hypomania or mania. CHECK IN DAILY Log your mood state, energy level, and how you're feeling with a quick check-in. Add optional notes and tags like "Racing thoughts," "High energy," or "Reduced sleep need" to capture nuance without effort. UNDERSTAND YOUR SIGNAL As your check-in history builds, Eunoia Signals surfaces a personal signal score based on your patterns. It combines what you self-report with optional biometric data from Apple Health to give you a fuller picture of where you are right now — and where you've been trending. BIOMETRIC SUPPORT Connect Apple Health to layer in physiological signals: sleep duration, heart rate variability, resting heart rate, step count, active energy, and respiratory rate. All compared to your personal baseline, not population averages. TREND OVER TIME The Trends tab shows your mood and activation history as a chart so you can see patterns across days and weeks — not just today. PRIVATE BY DESIGN Your notes are never read or transmitted. All scoring happens on-device. HealthKit data never leaves your phone. Research data sharing is optional and fully opt-in — you can turn it off at any time in Settings. NOT A MEDICAL DEVICE Eunoia Signals is a personal awareness tool, not a diagnostic instrument. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for clinical decisions.
Screenshots
Verdict
Rapid Cycling and Eunoia Signals are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.
| Parameter | Rapid Cycling | Eunoia Signals |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.2 | 18.1 — better |
| Further details — not scored | ||
| Size | 1 MB | 5 MB |
| Age rating | 4+ | 12+ |
| Developer | Michal Horowic | Thomas Bryant |
In-app purchases
Rapid Cycling
No in-app purchases
Eunoia Signals
No in-app purchases
Questions
Is Rapid Cycling free?
Is Eunoia Signals free?
Do Rapid Cycling or Eunoia Signals have ads?
Which is updated more often, Rapid Cycling or Eunoia Signals?
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