Comparison

VO2 Prime vs JoiApp

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

Head to head
About

VO2 Prime

Features
Read full description

This app transforms VO2 Max and Resting Metabolic Rate (RMR) test results into daily guidance for nutrition and recovery optimization. Users can track how their body burns fat vs carbs, monitor biological age, and receive tailored insights for training and lifestyle. It provides access to personalized meal plans, recipes, and workout builders β€” all powered by personal metabolic analysis and breath-based testing. Key Features: β€’ Dashboard with activity, nutrition, recovery, and metabolic data. β€’ Personalized nutrition planning with meal plans and smart recommendations. β€’ Training builder aligned with VO2 Max and RMR test results. β€’ Recovery tracking with biological age and fat vs carb burn metrics.

About

JoiApp

Features
Read full description

Joi - Wellness Reflection and Daily Check-In Joi is a wellness and lifestyle app that helps users build a more consistent self-reflection routine through guided check-ins, structured questionnaires, and personal wellness insights. Designed for everyday use, Joi helps users pause, reflect, and better understand their patterns over time. What Joi Offers Guided Reflection Tools Joi includes optional guided reflection features that support users in pausing and checking in with themselves during the day. Wellness Check-Ins and Questionnaires Joi includes structured wellness questionnaires and daily check-in tools to help users reflect on mood, stress, and daily wellbeing over time. Personalized Wellness Support Based on user responses, Joi provides reflection prompts, action items, and general wellness suggestions to support healthier routines and emotional awareness. Trend Tracking and Reports Joi organizes check-in history and wellness trends in a clear format, including downloadable PDF summaries for personal reference. Bilingual Experience Joi supports both Korean and English for users in Korea and abroad. How Joi Can Help Build a more regular self-reflection habit Track personal wellness check-ins over time Review mood and stress patterns in a structured way Receive reflection prompts and wellness suggestions Develop steadier daily routines What Joi Aims to Be Joi is not about judgment or pressure. It is a tool for reflection, awareness, and more thoughtful self-care. Joi is designed to be a calm companion for your daily wellness routine. Important Notice Joi is a wellness self-reflection and support tool. It does not provide medical diagnosis, treatment, or emergency support. Always seek a doctor’s advice in addition to using this app and before making any medical decisions. If you are in crisis or need urgent care, contact local emergency services immediately. Customer Support Inquiries and Feedback: Settings -> Customer Support Data Management: Settings -> Data Management Subscription Information JoiApp Premium is an auto-renewing subscription, offered as a monthly or an annual plan. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period, at the price shown in the app for your region. You can manage your subscription and turn off auto-renew in your Apple Account settings after purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://joiapp.net/privacy-policy

Screenshots

VO2 Prime4 screens
JoiApp4 screens

Verdict

The call

The clearest difference is update cadence: JoiApp at every 2 weeks against VO2 Prime's monthly. On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

VO2 Prime ships an update monthly, JoiApp every 2 weeks. The most recent releases landed on October 21, 2026 and October 28, 2026 respectively.

Scorecard1 real difference Β· 5 level
VO2 Prime versus JoiApp: the parameters behind the verdict, then further details
ParameterVO2 PrimeJoiApp
PriceFreeFree
Update frequencyMonthlyEvery 2 weeks β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPod, Apple Watch β€” betteriPhone, iPad
Requires iOS15.1 β€” better16.0
Further details β€” not scored
Size62 MB69 MB
Age rating17+4+
DeveloperEndoMedical IncSzupia Inc.

In-app purchases

None

VO2 Prime

No in-app purchases

None

JoiApp

No in-app purchases

Questions

Is VO2 Prime free?
VO2 Prime is free to download, with no in-app purchases.
Is JoiApp free?
JoiApp is free to download, with no in-app purchases.
Do VO2 Prime or JoiApp have ads?
Neither VO2 Prime nor JoiApp shows ads.
Which is updated more often, VO2 Prime or JoiApp?
VO2 Prime ships an update monthly, and JoiApp every 2 weeks. Most recently, VO2 Prime was updated on October 21, 2026 and JoiApp on October 28, 2026.

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