Sleepcraft vs RefineSimple
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
RefineSimple
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RefineSimple is the strength-training app for people who take it seriously — with a plan that adapts to your body instead of forcing you through a fixed scheme. ADAPTIVE Your week isn't a rigid calendar, it's a pool of sessions. Each morning your readiness score picks the best one for today: recovered → your heavy day, wiped → something lighter or a real rest day, no guilt. Underneath runs a real mesocycle with deload weeks and automatic progression that follows your sets. EXPLAINABLE No black box. Every recommendation names the strongest reason with a number — "HRV below baseline, sleep −21% → less volume today." You always understand why the app suggests something. YOU STAY IN CONTROL The app never says "don't train." It shows you why it recommends an adjustment today — accept or keep the original plan, one tap. READINESS THAT'S YOURS Your readiness score comes from HRV, sleep, resting heart rate and training load, straight from Apple Health. Instead of generic numbers, the app learns your personal typical range, shows the real trend and a 14-day history — reconstructed on first launch. YOUR AI COACH A coach that knows your recent sessions, your readiness score and every set you've logged — and answers based on them. It swaps an exercise when a joint acts up, cuts volume when needed, and explains its decisions. No motivational fluff. PROGRESS, HONESTLY COUNTED Automatic PR detection via estimated 1RM — a rep PR counts too (100 kg × 8 instead of × 5). e1RM trend per exercise, tonnage and volume per muscle group against science-based landmarks. No nutrition tracking, no social features, no fluff. Just intelligent strength training that adapts to you. RefineSimple Pro unlocks the AI coach and all workouts.
Screenshots
Verdict
The clearest difference is update cadence: RefineSimple at every 2 days against Sleepcraft's weekly. On price, ads, 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. Sleepcraft sells 4 in-app purchases, starting at $9.99 per month and RefineSimple sells 2 in-app purchases, starting at $11.99 per month. Whichever you choose, the download price is not the number that matters.
Sleepcraft ships an update weekly, RefineSimple every 2 days. The most recent releases landed on September 28, 2026 and September 22, 2026 respectively.
| Parameter | Sleepcraft | RefineSimple |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (28 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 28 — better | — |
| Update frequency | Weekly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, Apple Watch — better | iPhone |
| Requires iOS | 18.0 | 17.6 — better |
| Further details — not scored | ||
| Size | 29 MB | 87 MB |
| Age rating | 12+ | 4+ |
| Developer | Nikolai Fabrika | Nathan Seefelder |
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
RefineSimple
- Monatlich14 Days trial$11.991 Month
- Jährlich14 Days trial$69.991 Year





