Comparison

Dullaby vs CoreOS

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

Head to head
About

Dullaby

Read full description

Struggling to fall asleep? Dullaby plays intentionally boring stories designed to quiet your mind. Listen to dry, uneventful content: ledger readings, historical records, procedural manuals. No plot twists, no excitement—just calm, monotonous narration. • 5 free stories to try • 20+ premium stories with subscription • Sleep timer so playback stops when you're asleep • Simple, minimal design for use in the dark If you need boring to switch off, you need Dullaby. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

CoreOS

This app provides a comprehensive system for optimizing your physical and mental well-being. It integrates intelligent workout tracking, advanced sleep monitoring, and structured habit-building tools to enhance daily performance and consistency.

Highlights
  • AI-powered workout tracking
  • Sleep optimization system
  • Daily performance tracking
  • Smart habit building
  • Clean, powerful interface
  • Integrated system approach
Features
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CoreOS — The Operating System for Your Life CoreOS is not just a fitness app. It’s a complete system designed to optimize your body, mind, and daily performance. Train smarter with intelligent workout tracking. Improve recovery with advanced sleep monitoring. Stay consistent with powerful habit systems built for discipline. Everything works together—seamlessly. WHAT YOU GET: • AI-powered workout tracking Personalized insights that push you to improve every session. • Sleep optimization system Track your sleep and wake up sharper, more recovered, and ready to perform. • Daily performance tracking Measure progress across fitness, recovery, and consistency. • Smart habit building Build discipline with structured systems designed for real results. • Clean, powerful interface Minimal, fast, and built like a true operating system. WHY COREOS Most apps track one thing. CoreOS connects everything. Your workouts affect your sleep. Your sleep affects your performance. Your performance defines your results. CoreOS brings it all together. BUILT FOR PEOPLE WHO WANT MORE This isn’t for casual tracking. This is for optimization. If you want to move better, think clearer, and perform at a higher level every day—CoreOS is your system. Privacy policy https://app.termly.io/policy-viewer/policy.html?policyUUID=019ea327-0891-49fc-98db-0aa0828bb96d Terms of service https://app.termly.io/policy-viewer/policy.html?policyUUID=d3cbe04f-3efc-4612-86ab-83971d8c244e EULA https://app.termly.io/policy-viewer/policy.html?policyUUID=f2b2785e-f6fe-4d84-a4d8-d3fd3ec6790d

Screenshots

Dullaby3 screens
CoreOS4 screens

Verdict

The call

The clearest difference is device support: CoreOS at 2 against Dullaby's —. CoreOS also leads on iOS requirement (18.0 vs 26.2). On price and in-app purchases 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. Dullaby sells 3 in-app purchases, starting at $0.99 per 7 days and CoreOS sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences · 8 level
Dullaby versus CoreOS: the parameters behind the verdict, then further details
ParameterDullabyCoreOS
PriceFreeFree
Rating—4.7 (14 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—14 — better
Update frequency—Every 5 days
Ads—No
In-app purchasesYesYes
Monetization—Free with in-app purchases
Devices—iPhone, iPad — better
Requires iOS26.218.0 — better
Further details — not scored
Size167 MB31 MB
Age rating4+12+
DeveloperFrederik RoessellJack Blank

In-app purchases

3 purchases

Dullaby

Subscriptions3
  • Premium Weekly$0.997 Days
  • Premium Monthly$3.991 Month
  • Subscriptions$19.991 Year
3 purchases

CoreOS

Subscriptions3
  • monthly$9.991 Month
  • coreOsAbandonPaywall$29.991 Year
  • yearly3 Days trial$49.991 Year

Questions

Is Dullaby free?
Dullaby is free to download, with in-app purchases available.
Is CoreOS free?
CoreOS is free to download, with in-app purchases available.

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