Comparison

Fathom vs Psychology Dictionary Lab

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

Head to head
About

Fathom

Explore great thinkers and philosophies with bite-sized lessons. Understand complex ideas with elegant visuals and build a daily habit of learning. Access over 50 learning paths on diverse philosophical topics.

Highlights
  • Daily philosophy habit building
  • Bite-sized lessons (under 2 minutes)
  • Elegant visual explanations
  • 50+ learning paths
  • Save and review insights
  • Set learning goals
Features
Read full description

Fathom is your guide to the world's most great thinkers and philosophies. - Build your foundational knowledge in one of humanity’s original disciplines. From Socrates to Descartes and from Buddhism to Existentialism take the time to truly understand how some of the world’s wisest people think. - Understand complex concepts quickly, with elegant visuals that clarify key ideas and help you stay focused. - Learn on your schedule. Knock out a lesson in two minutes or less, in bite-sized sessions designed to fit into your week no matter what life throws your way. - Set a learning goal and embark on a multi lesson learning paths into specific philosophies and philosophers - Actually refer back to wisdom when you need it most. Save and review the insights and visuals that matter most to you Explore our rapidly expanding catalog, featuring 50+ learning paths such as: -Buddhist Wisdom for Anxious Minds -Socrates and Plato -Aristotle -Hedonism, Cynicism, Stoicism -Utilitarianism and Kantian Ethics -Kant’s Epistemology -Kierkegaard -Feminist Philosophy and Perspectives on Power -Camus ...and much more! -- SUBSCRIPTION PRICING AND TERMS: Fathom offers an auto-renewing yearly subscription and an auto-renewing monthly subscription which allows you full access to all of the content in our catalog for as long as you maintain an active subscription. These prices are for United States customers. Pricing in other countries may vary and actual charges may be converted to your local currency depending on your country. Payment will be charged to the credit card connected to your iTunes account at the time of initial subscription purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current subscription period. Your account will be charged for renewal within 24 hours prior to the end of the current period end date, and the cost of the renewal will be listed. You can manage your subscription and auto-renewal can be turned off by going to your Account Settings after the purchase. Read more about our Privacy Policy here: https://tinyurl.com/4a5p4z8b Read more about our Terms of Service here: https://tinyurl.com/xnmcrbvp

About

Psychology Dictionary Lab

Features
Read full description

Psychology Dictionary Lab is a research companion for psychology students, graduate researchers, and educators. Work through a structured eight-step wizard that helps you turn a vague research question into a defensible study design, then assemble an APA 7th edition manuscript draft that you review, edit, and finish in your own words. WHAT YOU CAN DO - Design a study in eight guided steps Topic, variables, hypothesis, sample, method, instruments, analysis plan, ethics. Each step offers AI-assisted suggestions you can accept, edit, or rewrite. - Run real statistical tests Independent and paired t-tests (Welch), one-way ANOVA, Pearson and Spearman correlations, multiple regression, chi-square. Every result includes the appropriate effect size (Cohen's d, eta squared, Cramer's V, Pearson r) and a 95% confidence interval, computed with scipy and statsmodels. - Collect survey responses anonymously Send a survey link to your participants. Responses arrive instantly. Participant IPs are one-way hashed for fraud prevention; no names, emails, or trackers are stored. - Build APA 7th edition drafts Abstract, introduction, method, results, discussion, references, assembled from the content you entered as a starting point for your own writing. Export to PDF (Pro: also Word .docx) and edit it yourself. A DRAFTING TOOL, NOT A GHOSTWRITER Every AI-assisted output is labeled as AI-generated and is meant to be reviewed, verified, and rewritten by you before it is submitted or published. The app does not produce finished academic work on your behalf, and it is not a substitute for your own analysis or for professional judgment. Follow your institution's academic integrity policy. WHO IT'S FOR - Undergraduate students writing their first research methods paper - Graduate students preparing thesis pilot studies - Educators demonstrating the full research cycle in class - Independent researchers iterating on small-sample studies AI FEATURES AI-assisted suggestions are powered by Anthropic Claude. You are asked for explicit consent before any of your content is sent, and you can withdraw that consent at any time in Settings. The rest of the app keeps working without it. PRIVACY-FIRST We collect the minimum data needed to run the service. No third-party analytics. No advertising trackers. Survey participants stay anonymous unless YOU explicitly ask them otherwise. You can delete your account and all associated data from Settings at any time. FREE TIER One research project, up to 50 survey responses, full statistical analysis, PDF export. PRO Title: Psychology Dictionary Lab Pro. Length: 1 year. Price: $79.99 per year. Includes unlimited projects, unlimited survey responses, Word (.docx) export, and priority email support. Payment is charged to your account at confirmation of purchase. Subscriptions renew automatically at $79.99 per year unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage and cancel subscriptions in your account settings after purchase. Terms of Use (EULA): https://api.psychologydictionary.app/terms Privacy Policy: https://api.psychologydictionary.app/privacy

Screenshots

Fathom4 screens
Psychology Dictionary Lab4 screens

Verdict

The call

The clearest difference is in-app purchases: Psychology Dictionary Lab at none against Fathom's 8. Psychology Dictionary Lab also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.0). On price, update cadence 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. Fathom sells 8 in-app purchases, starting at $6.99 per month. Psychology Dictionary Lab asks for nothing beyond the download.

UpkeepUpdate frequency

Fathom ships an update weekly, Psychology Dictionary Lab fortnightly. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Fathom versus Psychology Dictionary Lab: the parameters behind the verdict, then further details
ParameterFathomPsychology Dictionary Lab
PriceFreeFree
Rating4.8 (508 ratings) — better—
Positive reviews69.0% of reviews—
Number of ratings508 — better—
Update frequencyWeekly — betterFortnightly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size191 MB44 MB
Age rating12+4+
DeveloperPolywise, Inc.MiDocYa

Bugs and requests

Fathom

Reported bugs

2 issues
  • Unexpected charges during free trial period
  • Potential issues with app functionality and compatibility

Requested features

3 requests
  • Option to customize or revisit philosopher selections
  • More information about the app's algorithm and learning progression
  • Ability to explore a wider range of philosophical perspectives

Psychology Dictionary Lab

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Fathom

Subscriptions8
  • Monthly Subscription$6.991 Month
  • Premium Monthly Subscription$12.991 Month
  • Yearly Subscription (no trial)$49.991 Year
Show 5 more
  • Yearly Subscription7 Days trial$49.991 Year
  • Yearly Subscription (Premium)7 Days trial$59.991 Year
  • Yearly Access Premium No Trial$59.991 Year
  • Yearly Sub Premium No Trial$69.991 Year
  • Yearly Subscription Premium7 Days trial$69.991 Year
None

Psychology Dictionary Lab

No in-app purchases

Questions

Is Fathom free?
Fathom is free to download, with in-app purchases available.
Is Psychology Dictionary Lab free?
Psychology Dictionary Lab is free to download, with no in-app purchases.
Do Fathom or Psychology Dictionary Lab have ads?
Fathom shows ads; Psychology Dictionary Lab does not.
Which is updated more often, Fathom or Psychology Dictionary Lab?
Fathom ships an update weekly, and Psychology Dictionary Lab fortnightly. Most recently, Fathom was updated on October 30, 2026 and Psychology Dictionary Lab on October 25, 2026.

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