Comparison

Foundations Memory Work C3 vs Number Builder

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

Head to head
About

Foundations Memory Work C3

Enhance learning through memorization of quality content with art and song. This interactive app covers seven subject areas, including enhanced graphics, a timeline, and U.S. presidents.

Highlights
  • Memorize quality content
  • Learn with art and song
  • Interactive format
  • Seven subject areas
  • Enhanced graphics
  • Classical Acts & Facts timeline
  • U.S. presidents
Features
Currently charting
Read full description

Classical Conversations® Foundations Memory Work Tutorials, Cycle 3 Strengthen your brain by memorizing quality content with art and song in a beautiful, interactive format in seven subject areas. New features include enhanced graphics and interactivity, Classical Conversations® Classical Acts & Facts® timeline, and the U.S. presidents! Classical Conversations® empowers homeschooling parents and establishes classical, Christian communities that equip children with a biblical worldview and the classical tools of learning in order to impact the world for God’s glory. Visit us online to learn more: ClassicalConversations.com ClassicalConversationsBooks.com Please send questions or comments to: customerservice@classicalconversations.com

About

Number Builder

This app helps solve math puzzles by calculating all possible equations from dice rolls and a target number. It supports basic arithmetic, powers, and roots, making it a useful tool for games like Number Knockout.

Highlights
  • Calculates all possible solutions
  • Supports basic arithmetic
  • Includes powers and roots
  • Input dice rolls and target number
  • Useful for Number Knockout game
Features
Read full description

Number Builder turns dice rolls into a hands-on way to practice mental math. SOLVE MODE Roll three dice, enter a target number, and see every way to combine your dice — using addition, subtraction, multiplication, division, exponents, and roots — to reach it. Great for checking your own work or discovering paths you hadn't thought of. CHALLENGE MODE Roll a set of dice and a target, then build the answer yourself — tapping dice and operators into place, left to right, with instant feedback when you're right. Six levels of difficulty take you from simple addition all the way up to exponents, fractional exponents, and roots, with targets up to 1,000. Challenge mode includes 3 free puzzles to try. After that, it unlocks with a single one-time purchase — no subscriptions, and Family Sharing means one purchase covers your whole family. BUILT FOR PRACTICE Six progressively harder levels, each changing exactly one thing about the challenge Customizable dice colors and styles Full support for larger text sizes and VoiceOver Solve mode stays completely free, no purchase required No data is collected. No ads, ever.

Screenshots

Foundations Memory Work C34 screens
Number Builder4 screens

Verdict

The call

The clearest difference is review sentiment: Number Builder at 100% against Foundations Memory Work C3's 36%. Number Builder also leads on price (Free vs $9.99) and rating (4.9 vs 3.6). Foundations Memory Work C3's advantage is in-app purchases (none vs 1) and ratings volume (171 vs 7). On ads, monetization model 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

Number Builder is free to download; Foundations Memory Work C3 costs $9.99 up front. Number Builder sells 1 one-off in-app purchase. Foundations Memory Work C3 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Number Builder holds the better App Store score, 4.9 against 3.6. That said, the two scores are not equally well evidenced: Foundations Memory Work C3 has 171 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 36% of Foundations Memory Work C3's written reviews are positive against 100% of Number Builder's.

UpkeepUpdate frequency

Foundations Memory Work C3 ships an update every 16 months, Number Builder every 39 months. The most recent releases landed on September 21, 2026 and August 12, 2026 respectively.

Scorecard8 real differences · 3 level
Foundations Memory Work C3 versus Number Builder: the parameters behind the verdict, then further details
ParameterFoundations Memory Work C3Number Builder
Price$9.99Free — better
Rating3.6 (171 ratings)4.9 (7 ratings) — better
Positive reviews36.4% of reviews100.0% of reviews — better
Number of ratings171 — better7
Update frequencyEvery 16 months — betterEvery 39 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
Best chart rank#11 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size739 MB4 MB
Age rating4+4+
DeveloperClassical ConversationsWidgetilities LLC

Customer experience

Foundations Memory Work C3

All ratings171 ratings
Positive58.5%
Neutral14.0%
Negative27.5%
Written reviews66 reviews
Positive36.4%
Neutral24.2%
Negative39.4%

Number Builder

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Foundations Memory Work C3

Reported bugs

7 issues
  • Screen rotation issues
  • App disrupts phone's screen rotation
  • Content not loading correctly (e.g., only math)
  • Outdated content (e.g., President Biden not listed)
  • Latin pronunciation abysmal
Show 2 more
  • No sound issues (related to mute switch)
  • Quirky bugs with new app downloads

Requested features

22 requests
  • Organize material into a weekly format
  • Add the Timeline song (in its entirety)
  • Add President's Song
  • Add States and Capitals song
  • Add History song
Show 17 more
  • Add Latin song
  • Add Geography song
  • Add quiz/test option
  • Add games or interactive elements
  • Add a study tracker
  • Ability to navigate individual songs (slide forward/backward)
  • Option to play whole week through
  • Weekly breakdown view
  • Visual depiction of memory work
  • Update to 5th edition
  • Include all content from CDs
  • Add President's song update (post-Obama)
  • Option to listen to all lessons in a row
  • Option to play one subject's lessons from week 1 on
  • Parental settings to prevent skipping ahead
  • Optimize for iPhone X
  • Discount for existing users

Number Builder

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Foundations Memory Work C3

No in-app purchases

1 purchases

Number Builder

One-time1
  • Unlock Challenge Mode$1.99

Questions

Is Foundations Memory Work C3 free?
Foundations Memory Work C3 costs $9.99, with no in-app purchases.
Is Number Builder free?
Number Builder is free to download, with in-app purchases available.
Which has better reviews, Foundations Memory Work C3 or Number Builder?
Number Builder is rated higher. Foundations Memory Work C3 averages 3.6 out of 5 from 171 ratings, while Number Builder averages 4.9 from 7 ratings.
Do Foundations Memory Work C3 or Number Builder have ads?
Neither Foundations Memory Work C3 nor Number Builder shows ads.
Which is updated more often, Foundations Memory Work C3 or Number Builder?
Foundations Memory Work C3 ships an update every 16 months, and Number Builder every 39 months. Most recently, Foundations Memory Work C3 was updated on September 21, 2026 and Number Builder on August 12, 2026.

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