Best First Principles Apps & Games

44+ iOS apps & games curated and reviewed

4.3 avg rating
19 free apps & games
Updated November 2026

Out of 44+ first principles apps and games on iOS, 19 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top First Principles Apps & Games (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1First Principles - USD21First Principles - USD21Free5.0★ (11)NoNoOct 2026
2First PrinciplesFirst PrinciplesFree4.3★ (49)NoYesNov 2026
3ICOCICOCFree5.0★ (44)NoNoNov 2026
4First Principles: PhysicsFirst Principles: Physics$12.99—YesNoAug 2026
51st Principle: Calculus Game1st Principle: Calculus GameFree—NoYesNov 2026
6Principles In ActionPrinciples In ActionFree4.9★ (6.1K)NoNoNov 2026
7Vernoly: Make Better DecisionsVernoly: Make Better DecisionsFree—NoYesOct 2026
8Outthink — Mental FrameworksOutthink — Mental FrameworksFree—NoYesMay 2026

Top Picks for First Principles

4.3😐(49 ratings)
FreeIn-App Purchases
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Access your favorite scripture study series offline and share verses easily. Expand references with a tap, copy text for sharing, and adjust text size for comfortable reading. Report errors or suggest improvements directly through the app.

What We Love

  • 👍 Great resource for bible studies
  • 👍 Convenient access to studies
  • 👍 Helpful for personal study and teaching
  • 👍 Easy to use interface
  • 👍 Scriptures inline with studies
  • 👍 Collaborative resource
  • 👍 Good value for price
  • 👍 Useful for making disciples
  • 👍 Encourages spiritual growth
  • 👍 Great to have on the go

Room to Improve

  • 🐛 App has only one study (1993)
  • 🐛 Font is wonky
  • 🐛 Unable to see studies in list view
  • 🐛 App not maintained (4 years since last update)
  • 🐛 iOS versions may not be compatible
  • 🐛 Latest update seems to have broken study visibility again
  • 🐛 Blank screen when trying to open studies
  • 🐛 App crashes frequently
  • 🐛 Users have to pay for studies
  • 🐛 Paid twice for app/studies
ICOC#3

ICOC by Sergii Mytakii

Songs, Chords, Bible Studies
Worth Considering
🌟 Lifestyle
5.0(44 ratings)
Free
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Access Christian songs with chords and videos, foundational teachings, and Q&A sessions. This app provides all essential materials in one place, eliminating the need for physical literature.

More First Principles apps to explore

FAQ about First Principles

What are the best first principles apps & games for iPhone?
First Principles - USD21 tops our first principles apps & games ranking as of November 2026, with a 5.0-star average from 11 App Store ratings, and it's free to download.
Yes — 19 of the top first principles apps & games we rank are free to download, including First Principles - USD21 and First Principles.
First Principles - USD21 has no ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 44+ first principles apps & games on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.