Comparison

Cens vs Prelude Therapy prep

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

Head to head
About

Cens

Features
Read full description

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.

About

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.

Highlights
  • Voice-to-Insight transcription
  • Session summary generation
  • Emotional arc visualization
  • Identification of recurring themes
  • Local AI processing
  • No account required
Features
Read full description

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

Cens4 screens
Prelude Therapy prep4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Cens versus Prelude Therapy prep: the parameters behind the verdict, then further details
ParameterCensPrelude Therapy prep
PriceFreeFree
Rating—3.7 (3 ratings) — better
Positive reviews—50.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better26.0
Further details — not scored
Size719 MB3 MB
Age rating4+12+
DeveloperEvolve Biologix Inc.Ugochukwu Nwune

In-app purchases

None

Cens

No in-app purchases

None

Prelude Therapy prep

No in-app purchases

Questions

Is Cens free?
Cens is free to download, with no in-app purchases.
Is Prelude Therapy prep free?
Prelude Therapy prep is free to download, with no in-app purchases.
Do Cens or Prelude Therapy prep have ads?
Cens shows ads; Prelude Therapy prep does not.
Which is updated more often, Cens or Prelude Therapy prep?
Cens ships an update every 2 months, and Prelude Therapy prep every 3 weeks. Most recently, Cens was updated on October 25, 2026 and Prelude Therapy prep on October 24, 2026.

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