📊 29K iOS Apps Tracked Updated 4 min ago ⚡ Revenue Forecasts
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70
BU Score
Strong

Big Math Flash Cards

4.2 ✍️ Editor
✍️ BU Analytics Review

Big Math Flash Cards is an iOS app from Masato Takagi in the Education category, currently rated 4.2★ across 39,279 ratings. Initial signal reads as mixed reviews — supporters praise core features while critics cite stability/value gaps.

Our BU Score puts it at 70Strong (healthy traction). For a Education app, that means healthy traction.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

creator

📊 Performance Tracking LIVE

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idle
0%
Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
0
since first record
Range:

💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 9 of 9 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Mid install base (39,279 ratings)METRIC
+$5,500
bugsREVIEW
−$1,800
5 starREVIEW
+$1,800
Mature app (11y old)METRIC
+$1,500
highly recommendREVIEW
+$1,400
slowREVIEW
−$1,200
Good rating (4.2★)METRIC
+$800
Ad-supported / freemiumMETRIC
+$600
Single-language (English only)METRIC
−$400
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Apr 25
May 25
Jun 25
Jul 25
Aug 25
Sep 25
Oct 25
Nov 25
Dec 25
Jan 26
Feb 26
Mar 26

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 3 MB🔞 4+📱 iOS 15.6+🔖 v3.7🔄 updated 7mo ago🌐 EN📂 Education💰 Paid🚀 Launched 2014 (11y old)

📝 About this app

Highly rated by teachers, parents and kids of all ages!

Flip the card just like a real flash card! Simple, clean and easy to use interface. The front side of the card shows the question and the back side of the card shows the possible answers. Just tap to flip the card. Once you answer the question correctly, flick the card off the screen by swiping up.

Features
* Addition, Subtraction, Multiplication, Division
* Score percentage and elapsed time displayed
* Configurable number of questions
* Configurable number of answers for multiple choice
* Supports landscape or portrait card display modes
* Selectable flash card color themes
* Turn all sounds on or off

Other great features available via "In App Purchase"
* Review Incorrect - review the questions that were answered incorrectly
* Score Cards - view and review past scores and questions
* Specific Numbers - customize the first and second number ranges
* Mixed Operations - ability to have cards with mixed operators
* Flash Card Mode - displays the answer instead of multiple choice (swipe up to mark the card correct, swipe down to mark the card incorrect)
* Manual Entry Mode - type your answer instead of selecting from a choice of possible answers
* Custom Cards - make your own custom card set questions
* Time Per Card - allows you to set a time limit for each card

🆕 What's New · v3.7

Update for iOS 26 and support for full screen mode

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
Big Math Flash Cards
Developer
Masato Takagi
Bundle ID
com.bigredapps.MathCards
App Store URL
Open in App Store
Category
Education
Content rating
4+
Languages
EN

Company

Website
Not found
Tagline
Not found
Description
Big Red Apps is the developer of educational apps for iOS, including Big Math Flash Cards and Big Alphabet Cards. Highly rated by teachers, parents and kids of all ages! Available for download in the Apple App Store.
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
Not found

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$1.2K/mo
Top-grossing rank
Outside top 100 in US Education
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
contact@bigredapps.com
Phone
Not found
Contact page
Not found
About page
Not found
📈Ratings growth39,279 ratings+20% lifetimeShow 3-year history estimate ▾May 2023Jan 2026May 2026
Tracked (34 weeks) Pre-tracking estimate (35 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
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