Comparison

Cortisol App vs Isla

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

Head to head
About

Cortisol App

Features
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Wholistic application to help those living with the rare disease Cushings manage their disease. The application allows users to manage their disease and get educated from trusted sources about Cushings. The cortisol app is free for users. All medical information in the application is from https://csrf.org/. Please note that the Cortisol App is not a medical device and we do not give any clinical recommendations or make any diagnoses. Disclaimer: any users of the Cortisol App should get their health advice from a doctor.

About

Isla

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Isla is your island of calm — a gentle, private way to settle your nervous system in about three minutes, whenever life feels like too much. No long courses. No streaks to keep. No pressure. Just tell Isla how you feel right now — wired, anxious, frozen, overstimulated, restless, or like you can't sleep — and it matches you to a short, body-based practice for this exact moment. HOW IT WORKS • Check in with how you feel, right now • Follow a calm ~3-minute somatic or breathing practice, guided by a soft voice and a breathing orb • Afterwards, notice how you feel — and let Isla quietly learn what helps you PERSONALIZED, PRIVATELY Isla uses on-device intelligence to choose the right practice and frame it warmly for you — entirely on your iPhone. Nothing you share leaves your device. There are no accounts and no third-party tracking, and your reflections are created privately on your iPhone. You can clear everything anytime. MADE TO FIT YOU Pick a profile that sounds like you — easily overstimulated, a racing mind, running on empty, wired and can't switch off, or simply "show me everything" — and Isla adapts its tone and suggestions. Change it whenever your needs shift. WHAT'S INSIDE • Short somatic, breathing, and grounding practices • A guided player with a gentle voice and a calming breathing orb (choose a Default, Woman, or Man voice) • Browse and start any practice directly • Gentle weekly reflections that notice patterns in how you've felt • An optional daily reminder • Full Dynamic Type, VoiceOver, and Reduce Motion support WORKS OFFLINE The core practices work with no connection and no AI — calm shouldn't depend on a signal. ISLA PREMIUM Unlock the full experience: • Personalized, AI-matched practices • The complete practice library • Private weekly reflections Try Isla Premium free for 7 days, then $4.99/month — or $29.99/year. Prices may vary by region. Isla is for relaxation and general wellbeing. It is not medical advice or a substitute for professional care. If you're struggling, please reach out to a qualified professional. your island of calm. — Subscription details — Isla Premium is an auto-renewable subscription. Monthly ($4.99) includes a 7-day free trial for new subscribers; Yearly is $29.99. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless turned off at least 24 hours before the end of the current period; manage or cancel anytime in your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.pigloboutique.com/#/privacy

Screenshots

Cortisol App4 screens
Isla4 screens

Verdict

The call

The clearest difference is in-app purchases: Cortisol App at none against Isla's 2. Cortisol App also leads on iOS requirement (17.6 vs 26.0). On price, ads and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Isla sells 2 in-app purchases, starting at $4.99 per month. Cortisol App asks for nothing beyond the download.

Scorecard2 real differences Ā· 3 level
Cortisol App versus Isla: the parameters behind the verdict, then further details
ParameterCortisol AppIsla
PriceFreeFree
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhoneiPhone
Requires iOS17.6 — better26.0
Further details — not scored
Size109 MB2 MB
Age rating4+4+
DeveloperSynaptica HealthMarkus Vaha

In-app purchases

None

Cortisol App

No in-app purchases

2 purchases

Isla

Subscriptions2
  • Isla Premium — Monthly$4.991 Month
  • Isla Premium — Yearly$29.991 Year

Questions

Is Cortisol App free?
Cortisol App is free to download, with no in-app purchases.
Is Isla free?
Isla is free to download, with in-app purchases available.
Do Cortisol App or Isla have ads?
Neither Cortisol App nor Isla shows ads.

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