Cens vs Prelude Therapy prep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cens
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Live your best life now! By wearing one of the supported bluetooth chest heart rate sensors below, Cens:ai can show you your heart stress and heart coherence in real-time, which is a heart rate variability (HRV) measure of how harmoniously the heart is beating. Raise your coherence and lower your stress by doing coherence meditation by yourself or with friends. Track your wellbeing with daily check-ins and journal entries. DISCLAIMER: Cens:ai cannot guarantee the accuracy of heart rate measurements from the devices below because their heart rate sensors are for consumer general wellness and fitness, and therefore not subject to FDA clearance. Therefore this app cannot be used for medical diagnosis and it cannot give you medical advice. Please seek a healthcare professional if you require medical assistance. The following devices are supported: Polar H9 Polar H10 Garmin HRM-Pro Plus Garmin HRM-Dual Garmin HRM-Fit Wahoo TRACKR DISCLAIMER: Cens:ai app cannot give you medical advice or diagnosis. It does not replace your healthcare professional's advice or an appointment with your doctor. Contact urgent care immediately in the event of an emergency.
Prelude Therapy prep
This AI-powered companion helps you prepare for therapy sessions by providing a private space to reflect on your week. It uses local processing to transcribe your thoughts, identify emotional patterns, and generate session summaries, all without sending your data to the cloud.
- Voice-to-Insight transcription
- Session summary generation
- Emotional arc visualization
- Identification of recurring themes
- Local AI processing
- No account required
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Stop walking into therapy sessions wondering where to start. Prelude is a private cognitive companion that helps you bridge the gap between your daily life and your therapeutic breakthroughs. Built exclusively for iOS, Prelude uses Apple Foundation Models to provide a secure, voice-first reflection space. Speak freely about your week and our local AI agent asks gentle, probing questions to help you uncover the "why" behind your "what." [Key Features] • Voice-to-Insight: High-fidelity, local transcription turns your raw thoughts into structured themes. • Session Briefs: Automatically generate a concise summary of your week’s emotional arc to share with your therapist. • The Emotional Arc: Visualize patterns in your mood across multiple sessions without ever sending data to a server. • Recurring Themes: Identify the core issues like workload anxiety or relationship goals before you step into the room. [The Privacy Pledge] We believe your mental health data is your most sensitive asset. • No Cloud: All AI processing happens on your iPhone. • No Accounts: No login required. No tracking. No data leakage. • Free Forever: This version of Prelude is a Billionware gift to the mental health community. End user license agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: Prelude Therapy prep at none against Cens's shown. Prelude Therapy prep also leads on update cadence (every 3 weeks vs every 2 months). Cens's advantage is iOS requirement (15.0 vs 26.0). On price, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Cens ships an update every 2 months, Prelude Therapy prep every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Cens | Prelude Therapy prep |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.7 (3 ratings) — better |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 719 MB | 3 MB |
| Age rating | 4+ | 12+ |
| Developer | Evolve Biologix Inc. | Ugochukwu Nwune |
In-app purchases
Cens
No in-app purchases
Prelude Therapy prep
No in-app purchases









