Comparison

Prelude Therapy prep vs Krasis

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

Head to head
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/

About

Krasis

Features
Read full description

Krasis tells you whether what you're about to eat will actually hold you — and, if it won't, the one thing to add. No calories. No macros. No logging. HOW IT WORKS Say what you're about to eat, in your own words. Krasis reads the plate for the three things that decide whether food stays with you: protein, fibre and healthy fat. Two of the three and it holds. One, and it won't hold you long — so Krasis names one thing to add. THE RESCUE COMES FROM YOUR OWN KITCHEN Tick what you usually keep in, once. Every suggestion after that comes from that list — no quinoa if you have never owned quinoa. Keep more than one kitchen (home, the office, your parents') and the answer changes with where you are. STILL FULL? A couple of hours later, one question and one tap: starving, fine, or stuffed. It is the only thing Krasis ever asks you, and it is how the app learns what holds you rather than what holds people in general. WHAT IT LEARNS Every meal you have answered for, ranked by how long it actually lasted. Not a chart of what you should have eaten — a record of what worked. WORKS OFFLINE The food table ships inside the app: 274 foods, built from four national nutrition databases. Typing a meal makes no network request. There is no account and no sign-up, and nothing you eat leaves your phone. A FOOD IT DOESN'T KNOW Krasis says so rather than guessing, asks what is mostly in it, and remembers your answer. THE NAME κράσις — the blending of things in due proportion. Hippocratic medicine used the word for the balance of powers in the body. A plate works the same way: protein, fibre and fat, mixed well enough to hold you. KRASIS PLUS Free covers unlimited reads, the rescue, and one kitchen of up to 25 staples. Plus adds: • Your history — every meal you have answered for, and what they have in common • Unlimited staples, and more than one kitchen • Check-backs timed to you, from your own median holding time • Go-to combos — save a plate and it comes back one tap from a fresh read Plus is EUR 3.99 a month, EUR 24.99 a year with a 7-day free trial, or EUR 49.99 once. Prices vary by region and are shown in your currency before you buy. Subscriptions renew automatically unless cancelled at least 24 hours before the current period ends; manage or cancel in your Apple Account settings. Terms of use: https://stavrop.github.io/krasis/terms.html Privacy policy: https://stavrop.github.io/krasis/privacy.html

Screenshots

Prelude Therapy prep4 screens
Krasis4 screens

Verdict

The call

The clearest difference is in-app purchases: Prelude Therapy prep at none against Krasis's 3. Krasis's advantage is iOS requirement (18.0 vs 26.0). On price, ads 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. Krasis sells 3 in-app purchases, starting at $3.99 per month. Prelude Therapy prep asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Prelude Therapy prep versus Krasis: the parameters behind the verdict, then further details
ParameterPrelude Therapy prepKrasis
PriceFreeFree
Rating3.7 (3 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS26.018.0 — better
Further details — not scored
Size3 MB12 MB
Age rating12+4+
DeveloperUgochukwu NwuneGeorgios Stavropoulos

In-app purchases

None

Prelude Therapy prep

No in-app purchases

3 purchases

Krasis

Subscriptions2
  • Krasis Plus Monthly$3.991 Month
  • Krasis Plus Yearly7 Days trial$22.991 Year
One-time1
  • Krasis Plus Lifetime$44.99

Questions

Is Prelude Therapy prep free?
Prelude Therapy prep is free to download, with no in-app purchases.
Is Krasis free?
Krasis is free to download, with in-app purchases available.
Do Prelude Therapy prep or Krasis have ads?
Neither Prelude Therapy prep nor Krasis shows ads.

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