Comparison

Dah vs Principles Personal Discovery

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

Head to head
About

Dah

Learn STEAM and entrepreneurship through engaging gameplay. Explore topics like science, math, and arts while being inspired by the creators' journey. Discover resources for after-school activities and college preparation.

Highlights
  • STEAM and entrepreneurship learning
  • Interactive gaming experience
  • Inspiration from creators' story
  • Resources for after-school activities
  • College preparation guidance
  • Multilingual support
Read full description

Introducing Dah-Varsity: Learn STEAM with a Cool Game! Dah-Varsity is a game created by a Black father-son duo, Damola, and Wole Idowu. They co-founded Toyz Electronics. Learn about STEAM (Science, Technology, Engineering, Arts, and Math) and entrepreneurship by gaming! In this game, you'll explore different STEAM topics like cars, math, music, books, space, and creating things. It's a chance for you to learn while playing! You'll also be inspired by Damola and Wole's incredible story. They are both really creative and smart. Damola started studying engineering at 15 at Syracuse. He majored in Mechanical Engineering and Economics at Syracuse University at 16! He won a competition for designing something cool at Howard University when he was 18. Wole graduated from high school at 15. He even appeared on a TV show called "20 Under 20 Transforming Tomorrow" on CNBC. He went to Carnegie Mellon University. He got a degree in Electrical and Computer Engineering and business at 20. Dah-Varsity is a special game that you can play anywhere. It's available in more than 100 languages, so kids all around the world can play it! The idea for the game came from Damola when he was studying at Howard University. He thought of something called Superhero Rap. In Superhero Rap, you imagine a perfect world and use STEAM ideas to solve problems and become a superhero! This game will teach you how to solve problems and think in a smart way that's related to your own life. Dah-Varsity was made at Carnegie Mellon University. You can play it on your phone, TV, computer, and soon on game consoles too! Damola and Wole have taught STEAM to more than 4000 students. They used their experience to make this game even better. When you play Dah-Varsity, you'll also find resources for cool activities you can do after school. You can connect with programs that help you prepare for college. And you'll learn about different jobs that match your interests in STEAM! Join the Dah-Varsity community and get ready for an awesome adventure filled with STEAM! Learn, have fun, and show the world what you can do. Download the app now! Learn more about Toyz Electronics and how they're helping kids in underserved communities. https://www.theesa.com/news/toyz-electronics-changing-the-game-for-kids-in-underserved-communities/ https://www.cbsnews.com/pittsburgh/video/toyzsteam-turning-kids-into-superheroes-through-video-games/ www.toyzelectronics.com

About

Principles Personal Discovery

Read full description

Principles turns centuries of Eastern personal probability mapping into clear, modern guidance for self-discovery and personal growth. Built on Bazi and Ziwei studies of the traditional lunar calendar and shaped by historical figure mapping, Principles maps 1,000+ personal archetypes, then goes further: it turns them into actionable personal, social, and vocational guidance you can use every day. Principles powers built proprietary scoring engine for all its chart, map, and daily alignment. Start your self-discovery journey. 1) Know your archetype See your Personal Map: strengths, blind spots, and the environments that drain you. Follow the path that lets you shine, and skip the ones that swallow you. 2) Find work that fits Vocational guidance that shows where you’re built to thrive; and which roles, cultures, and ladders to avoid. 3) Time your moves Daily calendar guidance so you know when to push, when to rest, and when cash, career, or relationships need attention, before the week runs you. 4) Learn the Eastern tradition: Plan the year with intention Annual and month-by-month readings show when to grow, rebuild, or wait, so you stop forcing decisions at the wrong moment. 5) Understand your circle Connection assessments reveal how you talk, support each other, and where you clash, so you protect the bonds that matter and learn to navigate those that are difficult. Principles is for reflection and personal growth only, not to replace medical, legal, financial, or psychological advice. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://principles.today/privacy.html

Screenshots

Dah4 screens
Principles Personal Discovery4 screens

Verdict

The call

The clearest difference is device support: Dah at 5 against Principles Personal Discovery's 3. On price, update cadence, ads and in-app purchases 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. Dah sells 3 one-off in-app purchases and Principles Personal Discovery sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Dah ships an update fortnightly, Principles Personal Discovery every 3 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 9 level
Dah versus Principles Personal Discovery: the parameters behind the verdict, then further details
ParameterDahPrinciples Personal Discovery
PriceFreeFree
Rating4.0 (9 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings9 — better—
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Mac, Apple TV — betteriPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size3.2 GB57 MB
Age rating4+4+
DeveloperToyz ElectronicsTAN HAI LONG PHUNG

In-app purchases

3 purchases

Dah

One-time3
  • Dah-Varsity Points$4.99
  • Dah-Varsity Points$9.99
  • Deity Dah Life or Death STEMS$29.99
10 purchases

Principles Personal Discovery

One-time10
  • Palace Report - Friends$0.99
  • Palace Report - Parents$0.99
  • Palace Report - Spouse$0.99
Show 7 more
  • Palace Report - Siblings$0.99
  • Palace Report - Health$0.99
  • Palace Report - Children$0.99
  • Palace Report - Travel$0.99
  • Palace Report - Blessing$0.99
  • Annual Reading$0.99
  • Connection Report$0.99

Questions

Is Dah free?
Dah is free to download, with in-app purchases available.
Is Principles Personal Discovery free?
Principles Personal Discovery is free to download, with in-app purchases available.
Do Dah or Principles Personal Discovery have ads?
Neither Dah nor Principles Personal Discovery shows ads.
Which is updated more often, Dah or Principles Personal Discovery?
Dah ships an update fortnightly, and Principles Personal Discovery every 3 weeks. Most recently, Dah was updated on November 3, 2026 and Principles Personal Discovery on October 31, 2026.

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