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Best First Principles Apps & Games

45+ iOS apps & games curated and reviewed

4.5 avg rating
20 free apps & games
Updated August 2026

Out of 45+ first principles apps and games on iOS, 20 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 (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1First Principles - USD21First Principles - USD21Free5.0★ (6)NoNoSep 2026
2First PrinciplesFirst PrinciplesFree4.3★ (48)NoYesSep 2026
3ICOCICOCFree5.0★ (38)NoNoSep 2026
41st Principle Graph Calculator1st Principle Graph CalculatorFree was $0.99—NoNoMay 2026
5Vernoly: PrinciplesVernoly: PrinciplesFree—NoYesAug 2026
6Moat Mind CoachMoat Mind CoachFree—NoYesJul 2026
7Principles In ActionPrinciples In ActionFree4.9★ (6.1K)NoNoSep 2026
8Universal PrinciplesUniversal PrinciplesFree—NoNoMay 2026

Top Picks for First Principles

First Principles#2

First Principles by CheapBrain

Strong Contender
🔍 Reference
4.3😐(48 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(38 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 August 2026, with a 5.0-star average from 6 App Store ratings, and it's free to download.
Yes — 20 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 August 2026.
We track 45+ first principles apps & games on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
First Principles provides guided Bible studies to help users build core convictions about their faith, discipleship, and baptism. It aims to equip individuals to make informed decisions regarding their spiritual journey.
First Principles is designed for iOS devices, including iPhone, iPad, and iPod. It is not currently available on Android.