Comparison

sleep² sleeptracker & analysis vs Stille

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

Head to head
About

sleep² sleeptracker & analysis

This app acts as a personal guide to better sleep, combining innovative sleep training with precise sleep tracking and analysis. It offers an EU-approved medical device program for acute sleep disorders like insomnia, providing personalized recommendations and sleep training based on your data.

Highlights
  • Sleep tracking and analysis
  • Sleep training programs
  • Personalized recommendations
  • Interactive chatbot
  • Data import (Polar sensor, Apple Health)
  • Manual sleep diary entry
Read full description

Discover Sleep Anew: sleep² - Your Sleep Tracker sleep² is your personal guide to better sleep. It combines innovative sleep training with a precise sleep tracker. Sleep trackers provide valuable insights into your sleep. The sleep² Intensive Program is an EU-approved medical device, specifically designed for people with acute sleep disorders like insomnia. Our scientifically based method has already helped thousands improve their sleep quality through systematic and gradual sleep tracking and training. sleep² Pro: Based on sleep analysis, the program adapts to individual sleep data, delivering precise recommendations from your sleep tracker. Sleep Tracker: Analyze sleep using a Polar sensor or import data via Apple Health. Manually enter sleep data into the sleep diary if no tracker is used. Based on the sleep data, you get: Detailed recommendations based on sleep analysis Sleep training for better sleep An interactive chat-bot to help you sleep better Sleep analyses always available—no waiting like in sleep labs Precise sleep analysis through innovative algorithms for sleep improvement Free download & basic functions Full features of sleep² (precise sleep analysis, personalized programs) with subscription purchase Download sleep² - Our sleep tracker and precise sleep analysis help improve sleep! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Stille

Features
Read full description

Stille is your quiet companion for difficult days — no pressure, no judgment. DAILY CHECK-IN Once a day, note how you're feeling. Choose a mood, write an optional note. No obligation, no gamification pressure. Just you. MOOD HISTORY See how your mood has developed over the last 30 days. Recognize patterns — on which days do you feel better? HIGHLIGHTS Collect small positive moments. The perfect coffee, a call from mum, 20 minutes of sunshine. On hard days, you can read them and find strength. GUIDED EXERCISES Four simple exercises for difficult moments: • 4-7-8 Breathing — calms the nervous system • 5-4-3-2-1 Grounding — back to the present moment • Meditation — 5 minutes of silence with rain sounds • Mindful Walking — 10 minutes with timer HELP ALWAYS AT HAND The crisis helpline is always one tap away. Free, 24/7. YOUR DATA BELONGS TO YOU All data stays on your device. No cloud, no accounts, no ads. Export and import anytime. Stille is completely free and ad-free.

Screenshots

sleep² sleeptracker & analysis4 screens
Stille4 screens

Verdict

The call

The clearest difference is update cadence: Stille at daily against sleep² sleeptracker & analysis's every 2 weeks. Stille also leads on iOS requirement (13.0 vs 15.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. sleep² sleeptracker & analysis sells 4 in-app purchases, starting at $9.99 per month and Stille sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

sleep² sleeptracker & analysis ships an update every 2 weeks, Stille daily. The most recent releases landed on October 17, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 8 level
sleep² sleeptracker & analysis versus Stille: the parameters behind the verdict, then further details
Parametersleep² sleeptracker & analysisStille
PriceFreeFree
Rating3.6 (37 ratings) — better—
Positive reviews61.7% of reviews—
Number of ratings37 — better—
Update frequencyEvery 2 weeksDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size110 MB38 MB
Age rating4+12+
DeveloperNukkuaaDennis Lehmann

In-app purchases

4 purchases

sleep² sleeptracker & analysis

Subscriptions2
  • sleep² PRO$9.991 Month
  • sleep² PRO$79.991 Year
One-time2
  • sleep² intensive program$39.99
  • sleep² intensive program$99.99
3 purchases

Stille

One-time3
  • Coffee$0.99
  • Big Coffee$2.99
  • Cake$3.99

Questions

Is sleep² sleeptracker & analysis free?
sleep² sleeptracker & analysis is free to download, with in-app purchases available.
Is Stille free?
Stille is free to download, with in-app purchases available.
Do sleep² sleeptracker & analysis or Stille have ads?
Neither sleep² sleeptracker & analysis nor Stille shows ads.
Which is updated more often, sleep² sleeptracker & analysis or Stille?
sleep² sleeptracker & analysis ships an update every 2 weeks, and Stille daily. Most recently, sleep² sleeptracker & analysis was updated on October 17, 2026 and Stille on October 3, 2026.

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