Comparison

sleep² sleeptracker & analysis vs Smart Journal

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

Smart Journal

Features
Read full description

Dreavie is the private journal that guides your writing. Unlike traditional diaries, Dreavie AI helps you organize thoughts through chat, asks reflective prompts, and analyzes your entries on request. Whether daily journaling, importing handwritten pages via photo, or reflecting with AI – everything stays encrypted on your device. No cloud. No servers. Your thoughts belong to you alone. Write freely, digitize your diary, or talk with an intelligent conversation partner that helps you find clarity. Dreavie makes journaling simple, secure, and personal – for mental health or creative writing. WRITE YOUR JOURNAL Create entries in seconds. Morning thoughts, feelings after work, or evening reflections – just start writing. AI COACH IN CHAT Imagine having a conversation partner who's always available. The AI coach knows your entries and can ask you prompts in the editor, helps you reflect, and brings new perspectives to your thoughts. Perfect when you don't know where to start. DIGITIZE HANDWRITING Photograph handwritten diary pages and Dreavie converts them into searchable text. Your analog memories go digital – without typing everything out. DREAM ANALYSIS Capture and understand your dreams. Dreavie helps you recognize patterns and discover meanings. Your dream diary with intelligent support. FAST SEARCH Find every thought again. Search all your entries – whether digitally written or imported from paper. PRIVACY FIRST All your data stays encrypted on your device. No cloud. No servers. No AI training data. You alone have access to your thoughts. Optionally, you can enable an encrypted cloud backup – but only if you want to. EXPORT YOUR DATA Your data belongs to you. Export all entries anytime as a backup or to use elsewhere. FOR EVERY AREA OF LIFE Mental Health: Reflect on feelings and recognize patterns Fitness & Progress: Document workouts and achievements Creativity: Capture ideas and projects Personal Growth: Track your development over months and years Work: Reflect on your workday to grow Memories: Preserve your most beautiful moments so they last forever Sounds good? It is. Start for free with Dreavie – your private journal. Questions, suggestions, or feedback? Write to us at office@dreavie.com Geschäftsbedingungen: https://dreavie.com/en/legal/terms Datenschutzrichtlinie: https://dreavie.com/en/legal/privacy-policy EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

sleep² sleeptracker & analysis4 screens
Smart Journal4 screens

Verdict

The call

The clearest difference is in-app purchases: Smart Journal at none against sleep² sleeptracker & analysis's 4. Smart Journal also leads on update cadence (every 5 days vs every 2 weeks). sleep² sleeptracker & analysis's advantage is ads (none vs shown). On price, device support and iOS requirement 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. Smart Journal asks for nothing beyond the download.

UpkeepUpdate frequency

sleep² sleeptracker & analysis ships an update every 2 weeks, Smart Journal every 5 days. The most recent releases landed on September 24, 2026 and February 23, 2026 respectively.

Scorecard3 real differences · 7 level
sleep² sleeptracker & analysis versus Smart Journal: the parameters behind the verdict, then further details
Parametersleep² sleeptracker & analysisSmart Journal
PriceFreeFree
Rating3.4 (34 ratings) — better—
Positive reviews56.6% of reviews—
Number of ratings34 — better—
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size107 MB79 MB
Age rating4+12+
DeveloperNukkuaaNoah Juraj Soticek

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
None

Smart Journal

No in-app purchases

Questions

Is sleep² sleeptracker & analysis free?
sleep² sleeptracker & analysis is free to download, with in-app purchases available.
Is Smart Journal free?
Smart Journal is free to download, with no in-app purchases.
Do sleep² sleeptracker & analysis or Smart Journal have ads?
Smart Journal shows ads; sleep² sleeptracker & analysis does not.
Which is updated more often, sleep² sleeptracker & analysis or Smart Journal?
sleep² sleeptracker & analysis ships an update every 2 weeks, and Smart Journal every 5 days. Most recently, sleep² sleeptracker & analysis was updated on September 24, 2026 and Smart Journal on February 23, 2026.

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