Comparison

Psychology Dictionary vs Cognopolis

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

Head to head
About

Psychology Dictionary

Explore over 18,000 psychological terms with in-depth explanations and a pronunciation guide. This app serves as a comprehensive resource for students, professionals, and anyone interested in mental health and self-improvement.

Highlights
  • Extensive database of 18,000+ terms
  • In-depth explanations
  • Bookmark and favorite terms
  • Pronunciation guide
  • Regularly updated content
Features
Read full description

Unlock the secrets of the human mind with Psychology Dictionary, your comprehensive guide to over 18,000 psychological terms. Delve into the fascinating world of mental health, therapy, and self-improvement, all at your fingertips. Expand your mental horizons and gain a deeper understanding of the human psyche. Download Psychology Dictionary today and embark on your journey towards self-discovery and mental wellness. KEY FEATURES EXTENSIVE DATABASE Access a vast collection of 18,000+ up-to-date psychological terms, from A to Z. Whether you're a student, professional, or simply curious, our app covers it all. IN-DEPTH EXPLANATIONS Dive deep into each term with detailed definitions and explanations. Gain insights into the complex concepts of psychology and mental health. BOOKMARK & FAVORITE Create your own personalized library by bookmarking your most-used terms for quick reference. Save your favorites to revisit later. PRONOUNCIATION GUIDE Improve your vocabulary with our pronunciation guide. Speak confidently about psychological terms with accurate pronounciations. STAY UPDATED Our database is regularly updated to ensure you have the latest information in the ever-evolving field of psychology. WHY CHOOSE PSYCHOLOGY DICTIONARY? Enhance Your Knowledge: Whether you're a psychology student or just curious about the mind, our app provides a wealth of information to satisfy your curiosity. Perfect for Professionals: Psychologists, therapists, counselors, and educators can rely on our app as a handy reference tool in their practice. Self-Improvement: Explore the world of self-help, self-discovery, and personal growth through a better understanding of psychological concepts. https://apa.nefarius.co/privacy-policy https://apa.nefarius.co/terms-of-use

About

Cognopolis

Read full description

Cognopolis — Learn about the mind and train your brain Cognopolis is a platform for learning psychology and exercising your cognitive skills, designed for anyone who's curious: students, professionals, or simply those who want to better understand how the mind works. It brings together in one place daily content, case simulations, mental training, and educational material — all with the support of artificial intelligence. What you'll find inside: • Concept of the Day — a key psychology concept every day, to learn something new effortlessly. Also available as a home-screen widget. • Cases to practice — simulations of fictional cases that invite you to reason and apply what you learn, with step-by-step guided walkthroughs. • Cognitive training — a collection of mental games organized into constellations (attention, memory, deduction, agility, and more) to exercise your brain while having fun. • Tests and reference cards — reference sheets and study tools to review psychology concepts and instruments. • Community — spaces to talk, share, ask, and learn alongside others. • Material and resources — practical content to study, explore, and keep your curiosity alive. Cognopolis is an educational and learning tool. Its content is for training purposes, may contain errors, and does not replace professional judgment. The app does not constitute mental health care, therapy, diagnosis, or treatment. Terms of Use (EULA): https://vinculo-production.up.railway.app/legal/terminos.html Privacy Policy: https://vinculo-production.up.railway.app/legal/index.html

Screenshots

Psychology Dictionary4 screens
Cognopolis4 screens

Verdict

The call

The clearest difference is update cadence: Cognopolis at every 3 days against Psychology Dictionary's every 4 weeks. Cognopolis also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases 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. Psychology Dictionary sells 8 in-app purchases, starting at $4.99 per 7 days and Cognopolis sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Psychology Dictionary ships an update every 4 weeks, Cognopolis every 3 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
Psychology Dictionary versus Cognopolis: the parameters behind the verdict, then further details
ParameterPsychology DictionaryCognopolis
PriceFreeFree
Rating4.5 (420 ratings) — better—
Positive reviews85.7% of reviews—
Number of ratings420 — better—
Update frequencyEvery 4 weeksEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size54 MB71 MB
Age rating4+17+
DeveloperNefarius AppsRakson Duarte

Bugs and requests

Psychology Dictionary

Reported bugs

4 issues
  • Typo in definition of 'abuse' (foormal)
  • App closes when looking up terms
  • Video ads pop out while typing
  • Rate us function doesn't work

Requested features

2 requests
  • Add small or key examples for each word
  • Add horizontal view support for iPad (now implemented)

Cognopolis

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Psychology Dictionary

Subscriptions8
  • Premium$4.997 Days
  • Premium3 Days trial$4.997 Days
  • Premium weekly with discount7 Days trial$9.997 Days
Show 5 more
  • Premium3 Days trial$9.991 Month
  • Premium$9.991 Month
  • Premium1 Month trial$14.991 Month
  • Premium$34.991 Year
  • Premium6 Months trial$74.991 Year
2 purchases

Cognopolis

Subscriptions2
  • Cognopolis Premium Mensual3 Days trial$4.991 Month
  • Cognopolis Premium Anual3 Days trial$29.991 Year

Questions

Is Psychology Dictionary free?
Psychology Dictionary is free to download, with in-app purchases available.
Is Cognopolis free?
Cognopolis is free to download, with in-app purchases available.
Do Psychology Dictionary or Cognopolis have ads?
Neither Psychology Dictionary nor Cognopolis shows ads.
Which is updated more often, Psychology Dictionary or Cognopolis?
Psychology Dictionary ships an update every 4 weeks, and Cognopolis every 3 days. Most recently, Psychology Dictionary was updated on November 3, 2026 and Cognopolis on November 5, 2026.

Other comparisons