70
BU Score
Strong
Big Math Flash Cards
✍️ 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 70 — Strong (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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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
Range:
💰 Forecast Revenue / mo
MODELRevenue 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
LIVECumulative 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
LIVEAverage rating evolution. Updates with each new review batch.
🗓️ Snapshot Timeline
HISTORYEach 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
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
- 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
- contact@bigredapps.com
- Phone
- Not found
- Contact page
- Not found
- About page
- Not found
📈Ratings growth39,279 ratings+20% lifetimeShow 3-year history estimate ▾
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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