Sleepcraft vs Mutterly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sleepcraft
This app analyzes your sleep stages, providing individual scores for deep, REM, and light sleep. It visualizes your sleep patterns on a clock face and helps you understand how daily factors affect your sleep quality. It also connects daytime activity to nightly recovery and forecasts sleep quality based on trends.
- Sleep stage scoring (deep, REM, light)
- 12-hour sleep clock visualization
- Personalized scoring by age and sex
- Tagging daily factors affecting sleep
- Daytime activity and HRV integration
- Sleep quality forecasting
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Sleepcraft reads your sleep data from Apple Health and breaks it down differently than most apps. It shows your sleep on a 12-hour clock face so you can see exactly when you got deep sleep, REM, light sleep, and awake periods. Instead of one combined sleep score, Sleepcraft gives each phase its own score — deep, REM, light, continuity, and regularity — so you know exactly what's working and what isn't. Scoring is calibrated to your age and sex. A 50-year-old man and a 25-year-old woman have different optimal deep sleep and WASO targets, based on clinical benchmarks from the NIH, CDC, and NHS. You can tag daily factors like late coffee, alcohol, or a hard workout and see how they affect not just your overall sleep, but each individual stage. Some patterns aren't obvious — for some people, ovulation can increase deep sleep, or a daytime nap might actually extend total sleep duration rather than shorten it. Sleepcraft surfaces these personal links so you're not guessing. It also connects your daytime active energy and HRV to nightly recovery, and uses your historical data to forecast tonight's sleep quality based on your current trends. All processing happens on your iPhone. No backend servers, no accounts. Your tagged factors and ratings sync through your own iCloud. Terms of Use (EULA): https://sleepcraft.app/privacy
Mutterly
Effortlessly capture your thoughts with quick voice notes and receive AI-generated daily reflections. This app prioritizes privacy with on-device processing, offering mindfulness without the hassle.
- Quick voice note capture (up to 40s)
- On-device AI processing for privacy
- Offline functionality
- AI-powered daily reflections
- Minimalist and clutter-free design
- Optional cloud AI models
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Journaling made simple, private, and powerful. Just speak. Mutterly transforms your scattered thoughts into meaningful daily reflections—perfect for busy people who want mindfulness without the effort. THE 20-SECOND SOLUTION Quick Voice Notes Capture your thoughts in quick 20-second bursts (up to 40s for Premium). Perfect for capturing thoughts on the go, in the car, or whenever inspiration strikes. 100% On-Device AI Your privacy is our priority. Mutterly now runs completely locally on your iPhone using the Llama 3.2 model. Your voice and your thoughts never leave your device. It even works offline in Airplane mode! AI-Powered Daily Summaries At the end of each day, get a beautiful AI-generated reflection. Mutterly synthesizes your recordings into a coherent daily summary to help you spot patterns and find clarity. Premium Experience • On-Device Processing: Unlimited local AI generation using the powerful Llama 3.2 1B model. • Cloud AI Option: Unlock even more powerful models (Gemma, Llama 3 8B +25 more) via the Cloud (Optional). Premium Tiers Elevate your experience with our new premium options: • Monthly ($0.99): Standard AI access & unlimited recordings. • Yearly ($4.99): Pro AI Tier access & best value. Zen-Like Simplicity Minimalist design with soft colors and thoughtful spacing. No clutter, no complexity—just you and your thoughts. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://cuti-therapy.com/privacy
Screenshots
Verdict
The clearest difference is monetization model: Sleepcraft at free against Mutterly's freemium. Sleepcraft also leads on ratings volume (28 vs 1). Mutterly's advantage is update cadence (every 3 days vs weekly). On price, rating, review sentiment 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. Sleepcraft sells 4 in-app purchases, starting at $9.99 per month and Mutterly sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Sleepcraft against 5.0 for Mutterly. That said, the two scores are not equally well evidenced: Sleepcraft has 28 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
Sleepcraft ships an update weekly, Mutterly every 3 days. The most recent releases landed on September 28, 2026 and September 15, 2026 respectively.
| Parameter | Sleepcraft | Mutterly |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (28 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 28 — better | 1 |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, Apple Watch — better | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 29 MB | 776 MB |
| Age rating | 12+ | 12+ |
| Developer | Nikolai Fabrika | Franz Richers |
Customer experience
Sleepcraft
Mutterly
In-app purchases
Sleepcraft
- Sleepcraft Membership7 Days trial$9.991 Month
- Sleepcraft Membership$9.991 Month
- Sleepcraft Membership7 Days trial$49.991 Year
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- Sleepcraft Membership$49.991 Year
Mutterly
- Premium Access$0.991 Month
- Premium Access$4.991 Year









