Comparison

KOR Studio vs BellyMystery

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

Head to head
About

KOR Studio

Features
Read full description

Welcome to KŌR, a boutique Pilates studio built on connection, care, and the power of movement. At KŌR, we believe strength is more than physical β€” it’s about showing up for yourself, growing with others, and building a body that supports you for life. Our classes are designed to help you move better, feel stronger, and stay well for the long run. Whether you're just beginning or deepening your practice, you'll be supported by expert instructors and a welcoming community every step of the way. Download the KŌR app to easily book classes, manage your schedule, and stay connected with everything happening in the studio. Your journey to long term strength and wellbeing starts here.

About

BellyMystery

Features
Read full description

BellyMystery helps you notice patterns between what you eat and how you feel, without slowing down your day. Log a meal in under 30 seconds with a photo, and Belly Mystery identifies the likely ingredients for you. Log a symptom or a stool entry (Bristol scale) in under 15 seconds. Add a quick note about illness, medication, or travel so those get factored in too. Behind the scenes, BellyMystery's statistical engine looks for correlations between what you've logged, entirely on your device. When it finds something worth a second look, an AI-generated summary explains it in plain language, and always frames it as a pattern worth discussing with your doctor. BellyMystery never diagnoses you. When you're ready to talk to a doctor, export a clean PDF summary of your patterns and full diary directly from the app to share however you like. Why BellyMystery: Fast logging: meals, symptoms, and stools take seconds, not minutes. Works offline: logging never waits on the network. Photos are analyzed when you're back online. Private by design: no account, no login. Your diary lives on your device. Only a meal photo (to identify ingredients) and a computed summary of your patterns (to generate narration) are ever sent off-device, and neither is stored afterward. No ads, no trackers, no data brokers. BellyMystery includes a short free trial. After that, a single one-time purchase unlocks the app for life. No subscriptions. BellyMystery is not a medical device and does not diagnose, treat, or cure any condition. It's a tool for noticing patterns in your own data to discuss with a healthcare professional.

Screenshots

KOR Studio3 screens
BellyMystery4 screens

Verdict

The call

The clearest difference is in-app purchases: KOR Studio at none against BellyMystery's 1. BellyMystery's advantage is update cadence (every 5 days vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

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

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

Both are free to download. BellyMystery sells 1 one-off in-app purchase. KOR Studio asks for nothing beyond the download.

UpkeepUpdate frequency

KOR Studio ships an update every 6 months, BellyMystery every 5 days. The most recent releases landed on September 26, 2026 and October 29, 2026 respectively.

Scorecard2 real differences Β· 4 level
KOR Studio versus BellyMystery: the parameters behind the verdict, then further details
ParameterKOR StudioBellyMystery
PriceFreeFree
Update frequencyEvery 6 monthsEvery 5 days β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhoneiPhone, iPod β€” better
Requires iOS16.015.0 β€” better
Further details β€” not scored
Size64 MB40 MB
Age rating12+4+
DeveloperKOR StudioOla Halvorsen

In-app purchases

None

KOR Studio

No in-app purchases

1 purchases

BellyMystery

One-time1
  • English$12.99

Questions

Is KOR Studio free?
KOR Studio is free to download, with no in-app purchases.
Is BellyMystery free?
BellyMystery is free to download, with in-app purchases available.
Do KOR Studio or BellyMystery have ads?
Neither KOR Studio nor BellyMystery shows ads.
Which is updated more often, KOR Studio or BellyMystery?
KOR Studio ships an update every 6 months, and BellyMystery every 5 days. Most recently, KOR Studio was updated on September 26, 2026 and BellyMystery on October 29, 2026.

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