Comparison

Kinnu vs Cog ADHD

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

Head to head
About

Kinnu

This app offers bite-sized learning content across a wide range of subjects, from psychology and science to history and technology. It utilizes cognitive science and a unique "Memory Shield" technology to help users retain information effectively, making learning engaging and fun.

Highlights
  • Bite-sized, expert-edited content
  • Memory Shield technology for retention
  • Gamified learning sessions
  • Community-driven content development
  • Knowledge Bank progress tracking
  • Interactive, adaptive questions
  • Audio versions of content
Features
Read full description

We built Kinnu to give everyone the power to learn anything they want to, whatever their goals. With Kinnu you can: Follow your curiosity Become the most interesting person in the room Never forget what you’ve learned with our Memory Shield technology Find a cure to doomscrolling on social media Our microlearning app harnesses cognitive science to help you build lasting knowledge across many domains. It’s the product of several years of research from experts in the science of learning. Popular courses: Psychology: Mental Health, Positive Psychology, Superpower Learning, Cognitive Biases Lifeskills: Personal Finance, Persuasion, Communications Health: Science of Sleep, Science of Exercise, Healthy Habits Science: Laws of Physics, Fungi, Astronomy, Quantum Physics, Chemistry, Zoology History: World History, Ancient Civilizations, Near Modern Civilizations, Rome Technology: Artificial Intelligence, Generative AI, Cybersecurity, Data Science Literature: Poetry, Folklore, 10 Great Novels, Shakespeare Absolutely Random: Dinosaurs, Greek Mythology, Secret Societies and Cults, Video Games Product features: Bite-sized, expert edited content Memory Shield technology – a new method to never forget what you’ve learned Highly addictive gamified learning sessions Community votes on where to take the app next Track your progress and watch your mind grow with the Knowledge Bank Super clean design that makes daily learning a joy Map based design to explore content and conquer new areas Interactive, adaptive questions and games to refresh and retain your knowledge. Audio version of all content to learn on the go What our users say about us: “Literally feel myself getting smarter using this app… the questions wire stuff to my brain when I do the smart session every day.” “Learning has never been this fun. Engaging, interesting, diverse. Kinnu has it all.” “Fun, easy to use. Super fun to have short little bites of education on tons of interesting topics.” “It’s amazing, and it’s enhancing my life.” Do you have an idea about how we could make our app and its content even better? Email us at support@kinnu.xyz - we listen, and we hear you. SUBSCRIPTION This app contains an optional in-app subscription. Payment will be charged to your iTunes Account at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage subscriptions in your App Store account settings. By using this app, you agree to the Kinnu Terms of Use: https://kinnu.xyz/terms Privacy Notice: https://kinnu.xyz/privacy Email: support@kinnu.xyz

About

Cog ADHD

This app helps users track ADHD symptoms and offers personalized education, coping strategies, and advice. It includes features for celebrating wins, accessing insights, and a cognitive behavioral therapy program. Users can also book sessions with qualified therapists.

Highlights
  • ADHD symptom tracker
  • Celebrate wins
  • ADHD insights
  • Cognitive Behavioral Therapy program
  • Book therapist sessions
Read full description

Cog ADHD is inspired by the face to face ADHD therapy process and tries to bring that to your phone. The app helps you note your ADHD symptoms and then responds with personalised education, coping strategies and advice on how to manage those symptoms. Features include: - ADHD symptoms tracker - Wins: Celebrate your wins by takin time to note them down - Insights: In-app stories that reveal the latest insights about ADHD - Cog BT: ADHD Cognitive Behavioural Therapy programme - Cog Clinic: Book a session with a qualified ADHD therapist today Built by a talented neurodiverse team who have mastered the art of focus. --- Privacy Policy https://www.cogadhd.com/privacy-policy Terms of Use https://www.cogadhd.com/terms-of-use

Screenshots

Kinnu4 screens
Cog ADHD4 screens

Verdict

The call

The clearest difference is ads: Kinnu at none against Cog ADHD's shown. Kinnu also leads on ratings volume (494 vs 1) and update cadence (every 6 days vs every 3 weeks). Cog ADHD's advantage is rating (5.0 vs 4.8). On price, in-app purchases, monetization model and device support 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. Kinnu sells 4 in-app purchases, starting at $1.99 per month and Cog ADHD sells 4 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Cog ADHD holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Kinnu has 494 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 87% of Kinnu's written reviews are positive against 71% of Cog ADHD's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Kinnu ships an update every 6 days, Cog ADHD every 3 weeks. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

Scorecard5 real differences · 5 level
Kinnu versus Cog ADHD: the parameters behind the verdict, then further details
ParameterKinnuCog ADHD
PriceFreeFree
Rating4.8 (494 ratings)5.0 (1 ratings) — better
Positive reviews87.5% of reviews — better71.4% of reviews
Number of ratings494 — better1
Update frequencyEvery 6 days — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS17.016.4 — better
Further details — not scored
Size101 MB41 MB
Age rating12+17+
DeveloperKinnu LimitedCog Enterprise B.V

Customer experience

Kinnu

All ratings494 ratings
Positive94.1%
Neutral2.0%
Negative3.8%
Written reviews287 reviews
Positive87.5%
Neutral4.9%
Negative7.7%

Cog ADHD

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive71.4%
Neutral0.0%
Negative28.6%

Bugs and requests

Kinnu

Reported bugs

4 issues
  • Frequent app crashes
  • Progress and data loss issues
  • Syncing problems
  • Compatibility issues with older devices

Requested features

5 requests
  • Ability to highlight or take notes
  • More in-depth content and sources
  • Customization options (e.g., dark mode)
  • Ability to connect with others
  • Improved notification and reminder system

Cog ADHD

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Kinnu

Subscriptions1
  • Monthly$1.991 Month
One-time3
  • Kinnu Certificate$7.99
  • Kinnu Certificate$14.99
  • Kinnu Certificate$19.99
4 purchases

Cog ADHD

Subscriptions4
  • Monthly Subscription7 Days trial$6.991 Month
  • Monthly Subscription7 Days trial$13.991 Month
  • Annual Subscription7 Days trial$49.991 Year
Show 1 more
  • Annual Subscription7 Days trial$99.991 Year

Questions

Is Kinnu free?
Kinnu is free to download, with in-app purchases available.
Is Cog ADHD free?
Cog ADHD is free to download, with in-app purchases available.
Which has better reviews, Kinnu or Cog ADHD?
Cog ADHD is rated higher. Kinnu averages 4.8 out of 5 from 494 ratings, while Cog ADHD averages 5.0 from 1 ratings.
Do Kinnu or Cog ADHD have ads?
Cog ADHD shows ads; Kinnu does not.
Which is updated more often, Kinnu or Cog ADHD?
Kinnu ships an update every 6 days, and Cog ADHD every 3 weeks. Most recently, Kinnu was updated on October 14, 2026 and Cog ADHD on October 3, 2026.

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