Comparison

Transparency Harm Reduction vs Fathom

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

Head to head
About

Transparency Harm Reduction

This AI-powered app offers immediate guidance for substance testing, featuring a database of reaction videos and advice on kit usage. It aims to make substance testing accessible and easy with expert-backed information.

Highlights
  • AI-powered substance testing guidance
  • Database of over 1,100 lab-verified reaction videos
  • Instructions on how to test substances
  • Test kit recommendations
  • Access to testing guides and help
  • Direct links to purchase test kits
Features
Read full description

Harnessing the power of AI technology, Transparency has taken the last 10 years and 10,000+ hours of research to provide a cutting-edge, versatile, and accessible harm reduction resource right from your phone. With the Transparency App, you’ll get immediate guidance for any substance you may be testing, access to our robust database of reaction videos, advice on which kit to use and how, and help learning how to test a specific substance. We’ve formulated this AI-powered app with our experience working with you over the last decade, to help make testing any substance as easy as possible. Download today for free to have this superior harm reduction guide at your fingertips. App Features: Watch Over 1,100 Lab-Verified Spot Kit Video Reactions Learn “How to Test” Your Substance Find Test Kit Recommendations Access Our Testing Guide and Test Kit Help Get Test Kits and Strips for Your Substance GET TEST KITS: BunkPolice.com CHECK OUT OUR UPCOMING PROJECTS: InfiniteTransparency.com SEND IN A SAMPLE FOR LAB TESTING: TransparencyTesting.com

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

Screenshots

Transparency Harm Reduction4 screens
Fathom4 screens

Verdict

The call

The clearest difference is rating: Fathom at 4.8 against Transparency Harm Reduction's 3.7. Fathom also leads on ratings volume (508 vs 6) and update cadence (weekly vs every 3 weeks). Transparency Harm Reduction's advantage is in-app purchases (none vs 8) and ads (none vs shown). On price, device support and iOS requirement 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. Transparency Harm Reduction asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Fathom holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: Fathom has 508 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 60% of Transparency Harm Reduction's written reviews are positive against 69% of Fathom's.

UpkeepUpdate frequency

Transparency Harm Reduction ships an update every 3 weeks, Fathom weekly. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

Scorecard7 real differences · 3 level
Transparency Harm Reduction versus Fathom: the parameters behind the verdict, then further details
ParameterTransparency Harm ReductionFathom
PriceFreeFree
Rating3.7 (6 ratings)4.8 (508 ratings) — better
Positive reviews60.0% of reviews69.0% of reviews — better
Number of ratings6508 — better
Update frequencyEvery 3 weeksWeekly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhoneiPhone, iPad — better
Requires iOS17.017.0
Further details — not scored
Size3 MB191 MB
Age rating17+12+
DeveloperInfinite TransparencyPolywise, Inc.

Customer experience

Transparency Harm Reduction

All ratings6 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews5 reviews
Positive60.0%
Neutral0.0%
Negative40.0%

Fathom

All ratings503 ratings
Positive96.2%
Neutral1.8%
Negative2.0%
Written reviews29 reviews
Positive69.0%
Neutral3.4%
Negative27.6%

Bugs and requests

Transparency Harm Reduction

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

Transparency Harm Reduction

No 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

Questions

Is Transparency Harm Reduction free?
Transparency Harm Reduction is free to download, with no in-app purchases.
Is Fathom free?
Fathom is free to download, with in-app purchases available.
Which has better reviews, Transparency Harm Reduction or Fathom?
Fathom is rated higher. Transparency Harm Reduction averages 3.7 out of 5 from 6 ratings, while Fathom averages 4.8 from 508 ratings.
Do Transparency Harm Reduction or Fathom have ads?
Fathom shows ads; Transparency Harm Reduction does not.
Which is updated more often, Transparency Harm Reduction or Fathom?
Transparency Harm Reduction ships an update every 3 weeks, and Fathom weekly. Most recently, Transparency Harm Reduction was updated on November 4, 2026 and Fathom on October 30, 2026.

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