Comparison

Katalyst vs Just Mind

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

Head to head
About

Katalyst

This app enhances a revolutionary workout system using Electro Muscle Stimulation (EMS) to engage all muscles simultaneously. It offers a full-body workout in just 20 minutes, with zero joint load. Access diverse workout programs and control intensity for personalized training.

Highlights
  • Electro Muscle Stimulation (EMS) training
  • Full-body engagement
  • 20-minute workouts
  • Zero joint load
  • Diverse workout library (strength, power, cardio, recovery)
  • Adjustable impulse intensity
  • Offline workout access
Features
Read full description

THE WORLD’S MOST EFFICIENT WORKOUT The Katalyst App is the companion to the Katalyst Training System, a revolutionary new workout that uses Electro Muscle Stimulation (EMS) to engage all of your muscles simultaneously. Our patented training system and wearable suit, controlled by the Katalyst App, delivers specially-tuned, low-frequency impulses to each of your major muscle groups. These impulses imitate the brain signals that cause your muscles to contract and, when combined with simple, bodyweight movements, multiply the results of any exercise. The result is a complete, full-body workout that engages up to 90% of your muscle fibers in just 20 minutes, even hard-to-reach back stabilizers. And because Katalyst does the heavy lifting for you, there is zero load added to your joints. HOW TO JOIN & ACCESS THE KATALYST APP New to Katalyst? Download the app and get a sneak peek of what your next fitness journey could look like. Get your training system at katalyst.fit. Already have a Katalyst System? The Katalyst App is free to download. Simply create your profile or log in, and enjoy unlimited access. WORKOUTS FOR ALL FITNESS LEVELS Designed to fit your life and help you reach your goals, our professional trainers have created workouts from beginner to superhuman, and for all fitness levels in between. Get access to our full library of strength, power, cardio, and recovery workouts: Strength: Get a complete, full-body strength workout for more results in less time. Power: Engage your fast-twitch muscle fibers with intense, explosive strength classes. Cardio: Discover guided cardio workouts, or incorporate “freestyle” mode into your own cardio routine. Recovery: Active and passive recovery modes let you finish workouts like the pros. Massaging impulses help increase blood flow and nutrient distribution. AUTO-FOLLOW OUR INSTRUCTORS TO REACH YOUR GOALS Your Katalyst trainer adjusts the impulse intensity remotely throughout each workout, optimizing the effect of every session. All you have to do is focus on yourself. PUSH YOURSELF WHILE STAYING IN CONTROL Whether you want to push yourself harder, pull back slightly, or target a particular muscle group, our app allows you to precisely control every aspect of the workout. You are always in charge of how hard you train. WORKOUT ANYTIME, ANYWHERE Preload and store your workouts so you can train anywhere, even offline and without internet access. MEDIA FEATURES Airplay: Bring the instructor to life on your AirPlay-enabled device and use your iPad as a remote control! Spotify: The right sound to help you get in the zone - listen to our curated playlists or play your own favorite music. Download the Katalyst App and get your personal Full-Body EMS training any time, any place. Learn more at www.katalyst.com

About

Just Mind

This app provides a private space to track your mental wellbeing between therapy sessions. It offers journaling prompts, daily check-ins, and access to mental health articles. Securely connect to your therapist's portal for messages and billing.

Highlights
  • Private journaling with daily prompts
  • Daily wellbeing check-ins
  • Track wellbeing trends over time
  • Access mental health articles
  • Secure therapist portal access
  • Crisis support resources
Features
Read full description

Just Mind is your private companion between therapy sessions at Just Mind Counseling in Austin, Texas. A calm, simple space to notice how you're doing, reflect on what's coming up, and stay connected to your care — all on your own phone. WHAT YOU CAN DO • Journal — Write about what's on your mind with a gentle daily prompt, and look back on past entries to see how things have shifted over time. • Wellbeing Check-In — Answer four short questions about how different parts of your life are going. See your score, follow your trends over 30, 90, and 180 days, and bring the results to your next session. • Read the blog — Browse mental-health articles from the Just Mind team on anxiety, relationships, parenting, self-growth, and more. • Stay connected — Reach your therapist's secure portal for messages, invoices, and billing; keep your next appointment in view; and find crisis support any time. YOUR PRIVACY COMES FIRST Everything you write — every journal entry and check-in — is stored only on your device. Nothing is uploaded to a server, synced to the cloud, or shared with Just Mind Counseling or anyone else. No analytics, no tracking. Lock the app with Face ID, Touch ID, or your passcode, and clear all your data whenever you like. A COMPANION, NOT A REPLACEMENT Just Mind supports the work you do with your therapist — it doesn't replace professional care, and it isn't a crisis service. If you're in crisis, the app puts the 988 Suicide & Crisis Lifeline and other support one tap away. The Journal, Check-In, and Blog are open to everyone. Messaging and billing require a Just Mind client portal login.

Screenshots

Katalyst4 screens
Just Mind4 screens

Verdict

The call

The clearest difference is rating: Just Mind at 5.0 against Katalyst's 4.6. Just Mind also leads on monetization model (free vs free with in-app purchases) and review sentiment (100% vs 81%). Katalyst's advantage is ratings volume (58 vs 2) and device support (3 vs 1). On price, update cadence, ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Just Mind holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Katalyst has 58 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 81% of Katalyst's written reviews are positive against 100% of Just Mind's.

UpkeepUpdate frequency

Katalyst ships an update every 3 weeks, Just Mind monthly. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

Scorecard5 real differences · 5 level
Katalyst versus Just Mind: the parameters behind the verdict, then further details
ParameterKatalystJust Mind
PriceFreeFree
Rating4.6 (58 ratings)5.0 (2 ratings) — better
Positive reviews80.6% of reviews100.0% of reviews — better
Number of ratings58 — better2
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size126 MB2 MB
Age rating4+12+
DeveloperKatalyst Interactive Inc.Just Mind PLLC

Customer experience

Katalyst

All ratings58 ratings
Positive87.9%
Neutral3.4%
Negative8.6%
Written reviews31 reviews
Positive80.6%
Neutral6.5%
Negative12.9%

Just Mind

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Katalyst

No in-app purchases

None

Just Mind

No in-app purchases

Questions

Is Katalyst free?
Katalyst is free to download, with no in-app purchases.
Is Just Mind free?
Just Mind is free to download, with no in-app purchases.
Which has better reviews, Katalyst or Just Mind?
Just Mind is rated higher. Katalyst averages 4.6 out of 5 from 58 ratings, while Just Mind averages 5.0 from 2 ratings.
Do Katalyst or Just Mind have ads?
Neither Katalyst nor Just Mind shows ads.
Which is updated more often, Katalyst or Just Mind?
Katalyst ships an update every 3 weeks, and Just Mind monthly. Most recently, Katalyst was updated on October 14, 2026 and Just Mind on October 4, 2026.

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