Comparison

DoSo vs Core

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

Head to head
About

DoSo

This app helps athletes develop mental resilience and lead their thoughts rather than being led by them. It offers guided sessions and mindset exercises to build mental muscle and improve performance under stress. Learn to respond effectively to challenges and maximize your potential.

Highlights
  • Develop mental resilience
  • Lead thoughts, don't react
  • Mindset exercises
  • Build mental muscle
  • Improve performance under pressure
  • Understand the performance brain
Features
Read full description

DoSo is a play on the word Duco from the Latin phrase - “Non Ducor Duco”, which translates to – “I am not led, I lead”. All the work I do with athletes is based on the concept that our struggles with confidence, doubt, anger, fear of failure, frustration, lack of focus, and motivation comes from us being “led” by our thoughts. We react with emotion and then follow whatever path those reactive thoughts take us down. The mentally strong athlete “leads” his/her thoughts, so instead of being in a state of reaction they are in a state of response. They decide where their thoughts are going to go, and not the other way around. “We do not control the things that happen to us. However, we can fundamentally change – therefore control- how we experience what happens to us.” – Stu Singer of WellPerformance Growth and development of new skills occur over time and through a consistent motivation to work on the things that bring about the outcomes you want. There are no shortcuts to developing the skills that it takes to continually be focused, respond to adversity, or bounce back after setback. It would be really cool if there were quick tricks, but it simply doesn’t work like that. In fact, that is what makes this app and approach unique – your mind will naturally begin to function more effectively - with less reactivity - without having to “over-think it”. Call it “resiliency habit” and it’s something that anyone can create. The fact is, we all have thoughts and behaviors that influence states of positivity or negativity. While the brain defaults toward paying attention to negative stimuli to keep us safe (survival instinct), we are absolutely capable of developing a more resilient brain. One of the fundamentals to wiring our brain toward resilience is in the simple understanding that what we practice and repeat starts to become more automatic. Just like our physical training on the mechanics of our sport. This app provides the exact sessions that I do with athletes from professional teams and division 1 programs all across the country. You’ll learn the most important performance psychology skills needed, and more importantly you’ll do mindset exercises that help you lock-in those skills. You can repeat these exercises over and over, and each time you practice a session it’s like doing another “rep” – it builds “mental muscle”. You’ll learn: · How the “performance brain” works under stress and pressure · To have awareness of what YOU do when there is stress and pressure from performance · The skills to respond in order to consistently maximize your performance. This program teaches you to become highly aware of what the mind does. Everyone that performs – from the novice all the way up to the professional or Olympian – faces moments of challenge. Instead of denying that these emotions ever even enter our minds it’s more important that we learn to recognize them, then learn to implement the skills to move beyond them, and ultimately find our best over and over again. TERMS OF SERVICE / PRIVACY POLICY These first three workouts are designed to introduce you to our mental game principles, and the essentials of our workouts. - Payment will be charged to your iTunes Account upon confirmation of purchase. - Your subscription will automatically renew unless auto-renew is turned off at least 24-hours before the end of the current period.
 - Your account will be charged for renewal within 24-hours prior to the end of the current period DoSo Monthly Subscription unlocks access to 21 Mindset Workouts and the Quick Hitters category for 1 month. DoSo Yearly Subscription unlocks access to 21 Mindset Workouts and the Quick Hitters category for 1 year.  Each workout consists of a 10 minute coaching. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Core

This app aims to make fitness spaces less intimidating by using visual communication systems. It offers workout tracking and fitness advice, designed to be accessible for all experience levels.

Highlights
  • Visual communication for gym accessibility
  • Fitness advice
  • Workout routine tracking
  • Habit building
  • Accessible for all levels
Features
Read full description

Welcome to the Core app! The Core brand has the mission of using visual communication systems to reduce psychological barriers to fitness participation. It integrates insights from environmental psychology, exercise science, and graphic design to make gym spaces more accessible and easier to understand, particularly to people new to those spaces, though it is designed to benefit users of all experience levels. Core provides users with fitness advice in and out of workouts, workout routine and split tracking in a way that builds a habit out of it, and more. Being a product of a college capstone project with the goal of making fitness tools as accessible as possible, all features are permanently free. No subscriptions, no purchases, no ads. Forever.

Screenshots

DoSo2 screens
Core4 screens

Verdict

The call

The clearest difference is in-app purchases: Core at none against DoSo's 2. Core also leads on update cadence (every 5 days vs every 2 weeks). DoSo's advantage is device support (3 vs 1) and iOS requirement (18.0 vs 26.0). On price, review sentiment and ads 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. DoSo sells 2 in-app purchases, starting at $6.99 per month. Core asks for nothing beyond the download.

UpkeepUpdate frequency

DoSo ships an update every 2 weeks, Core every 5 days. The most recent releases landed on October 6, 2026 and September 20, 2026 respectively.

Scorecard5 real differences · 5 level
DoSo versus Core: the parameters behind the verdict, then further details
ParameterDoSoCore
PriceFreeFree
Rating5.0 (16 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings16 — better—
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS18.0 — better26.0
Further details — not scored
Size779 MB2 MB
Age rating4+12+
DeveloperStuart SingerBen Treybal

Customer experience

DoSo

All ratings14 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Core

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

DoSo

Subscriptions2
  • DoSo Monthly Subscription$6.991 Month
  • DoSo Yearly Subscription$49.991 Year
None

Core

No in-app purchases

Questions

Is DoSo free?
DoSo is free to download, with in-app purchases available.
Is Core free?
Core is free to download, with no in-app purchases.
Do DoSo or Core have ads?
Neither DoSo nor Core shows ads.
Which is updated more often, DoSo or Core?
DoSo ships an update every 2 weeks, and Core every 5 days. Most recently, DoSo was updated on October 6, 2026 and Core on September 20, 2026.

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