Comparison

Math Facts Fluency Builder vs Just Math Facts

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

Head to head
About

Math Facts Fluency Builder

Features
Read full description

** Happy Frog Apps is a Mom’s Choice Award Winner! Also featured on FunEducationalApps.com, TeachersWithApps.com, and more! ** Math Facts Fluency: Easy-to-use, built-in rewards and excellent reporting. The only app you'll need to ensure your child is completely fluent in addition and subtraction math facts. What parents say about our awesome apps: *** 5 stars! My son tried other apps, but after using them, I couldn't tell how well he knew his math facts. Was he done? Did he still need practice? With your app, I know exactly how he is doing - and best of all, he LOVES working for the reward game. *** 5 stars! I like how my son can progress independently. The timer feature really ensures fluency. His recall is MUCH improved. Thanks!
 Math Fact fluency is *vital* for math success. Fluency frees up your learner's working memory, allowing more "brain space" for problem solving. Make math easier for your child by ensuring they know their math facts fluently (should be able to answer in about one second!) Math Facts Fluency Builder provides: -- Addition and subtraction math facts introduced in learnable groups. -- Built-in timers to ensure fluency at all levels. Earlier levels allow more time. Final levels require FAST answering! -- Students progress only when mastery of the current skill is demonstrated. -- 'At a glance' reporting shows you instantly how your learner is progressing. -- The fun Reward Center motivates even hesitant learners. Our apps are designed for and tested by typical and special needs children. Testers include children with Autism and other special needs. Our apps work for them! Our apps are also suitable for adults dealing with aphasia or learning English as a Second Language. 
To evaluate the app, download the free version, which has four free levels. Additional levels and additional players can be accessed with in-app purchases. (All levels can be purchased for $2.99 -- price may change.) 

If you prefer no in-app purchases, download the School Edition of this app, which includes all levels and up to 10 players. We take customer service very seriously! If you ever have a problem or find that we've missed something, contact us at our website and we will do our best to fix the problem.  We collect NO private information in our app. None! Our apps do not allow unrestricted web or social media access. We conform to the Children's Online Privacy Protection Act.

About

Just Math Facts

Sharpen your arithmetic skills with timed drills and custom problem sets. Track your progress with detailed metrics on percentage, speed, and accuracy. This app offers a fun way to master addition, subtraction, multiplication, and division.

Highlights
  • Addition, subtraction, multiplication, division modes
  • Mixed "blend" mode
  • Customizable problem count (5-100)
  • Adjustable time limit (1-60 minutes)
  • Performance tracking (percentage, speed, accuracy)
  • Ad-free option via in-app purchase
Features
Read full description

Just Math Facts helps students and lifelong learners sharpen their addition, subtraction, multiplication, and division skills with fun, timed drills and custom problem sets. • Choose from addition, subtraction, multiplication, division, or a mixed “blend” mode • Set problem count (5–100) or an open‐ended time limit (1–60 minutes) • Track your performance history with percentage, speed, and accuracy metrics • Go ad-free with a one-time $1.99 in-app purchase Download Just Math Facts today and start boosting your mental math speed!

Screenshots

Math Facts Fluency Builder4 screens
Just Math Facts3 screens

Verdict

The call

The clearest difference is price: Just Math Facts at Free against Math Facts Fluency Builder's $3.99. Just Math Facts also leads on update cadence (every 4 days vs every 38 months). Math Facts Fluency Builder's advantage is in-app purchases (none vs 1) and iOS requirement (12.2 vs 18.4). On ads 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

Just Math Facts is free to download; Math Facts Fluency Builder costs $3.99 up front. Just Math Facts sells 1 one-off in-app purchase. Math Facts Fluency Builder asks for nothing beyond the download.

UpkeepUpdate frequency

Math Facts Fluency Builder ships an update every 38 months, Just Math Facts every 4 days. The most recent releases landed on September 19, 2026 and July 4, 2026 respectively.

Scorecard4 real differences · 5 level
Math Facts Fluency Builder versus Just Math Facts: the parameters behind the verdict, then further details
ParameterMath Facts Fluency BuilderJust Math Facts
Price$3.99Free — better
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 38 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.2 — better18.4
Further details — not scored
Size17 MB7 MB
Age rating4+4+
DeveloperJanine TooleBrian Prokop

In-app purchases

None

Math Facts Fluency Builder

No in-app purchases

1 purchases

Just Math Facts

One-time1
  • Go Add Free $1.99$1.99

Questions

Is Math Facts Fluency Builder free?
Math Facts Fluency Builder costs $3.99, with no in-app purchases.
Is Just Math Facts free?
Just Math Facts is free to download, with in-app purchases available.
Do Math Facts Fluency Builder or Just Math Facts have ads?
Neither Math Facts Fluency Builder nor Just Math Facts shows ads.
Which is updated more often, Math Facts Fluency Builder or Just Math Facts?
Math Facts Fluency Builder ships an update every 38 months, and Just Math Facts every 4 days. Most recently, Math Facts Fluency Builder was updated on September 19, 2026 and Just Math Facts on July 4, 2026.

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