Aethyr Waves vs Prelude Therapy prep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Aethyr Waves
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Your daily companion for focus, sleep, energy, and inner balance. Aethyr Waves combines binaural beat frequencies with live-generated ambient music. No loops, no two sessions ever sound the same. Every preset is engineered around a specific brainwave band — Delta, Theta, Alpha, Beta, or Gamma — to gently support a distinct mental state. WHAT MAKES IT DIFFERENT • Procedural music engine — melodies, pads, arpeggios, and drums composed in real time, never repeating • 17 curated musical moods spanning peaceful, cosmic, energetic, genre, and active soundscapes • 37 specialized sessions across 8 categories: Mental, Sport, Emotional, Pain & Health, Sleep, Productivity, Wellness, and Active Predisposition • Dynamic session arc — intros breathe gently, peaks bring energy, outros settle for a calm close • Personalized wizard that recommends your session based on goal and energy • Five binaural bands precisely tuned to standard neuroscience frequencies NEW IN 1.4.0 — ACTIVE PREDISPOSITION A new category designed to prime your mind for action, not accompany it. Pre-gym, pre-pitch, pre-presentation, morning surge — sessions powered by real drum kits (kick, snare, hi-hat), sidechain compression for that classic EDM pump, and tempo curves that accelerate with you (the Ignition session ramps from 88 to 124 BPM in its first minute). DESIGNED FOR DAILY USE Whether you are working, meditating, sleeping, training, or creating, Aethyr Waves adapts to your needs with sessions from 5 minutes to unlimited duration. Background audio keeps your session running while you use other apps, and a guided 4-step wizard gets you started in seconds. FREE TIER 5 starter sessions including Meditation, Deep Focus, Mindfulness, Repetitive Work, and Gamer Focus, with sessions up to 5 minutes and a daily limit of 20 minutes total. PREMIUM SUBSCRIPTION ($3.99/month) • All 37 sessions across every category, including the new Active Predisposition family • All 17 procedural music moods • Unlimited session duration • Full customization: binaural frequency, base tone, noise mix, melody mood • All 8 wizard goal templates Stereo headphones are required for the binaural effect to work. For relaxation and wellness only. Not a medical device. Privacy Policy: https://waves.aethyrstudio.com/privacy Terms of Use: https://waves.aethyrstudio.com/terms
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 in-app purchases: Prelude Therapy prep at none against Aethyr Waves's 1. Aethyr Waves's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 26.0). On price, update cadence and ads 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. Aethyr Waves sells 1 in-app purchase, starting at $3.99 per month. Prelude Therapy prep asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Aethyr Waves | 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 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 6 MB | 3 MB |
| Age rating | 4+ | 12+ |
| Developer | SEBASTIAN E HERNANDEZ CACERES | Ugochukwu Nwune |
In-app purchases
Aethyr Waves
- Aethyr Waves Premium$3.991 Month
Prelude Therapy prep
No in-app purchases
Questions
Is Aethyr Waves free?
Is Prelude Therapy prep free?
Do Aethyr Waves or Prelude Therapy prep have ads?
Which is updated more often, Aethyr Waves or Prelude Therapy prep?
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