71
BU Score
Strong
Calculate84
✍️ BU Analytics Review
“
Calculate84 is an iOS app from Century Light LLC in the Education category, currently rated 4.8★ across 51,394 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Our BU Score puts it at 71 — 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 12 of 12 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Mid install base (51,394 ratings)METRIC | +$5,500 | |
| Excellent rating (4.8★)METRIC | +$2,200 | |
| bugsREVIEW | −$1,800 | |
| 5 starREVIEW | +$1,800 | |
| cancelledREVIEW | −$1,500 | |
| excellent appREVIEW | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| annoying adsREVIEW | −$1,100 | |
| Established app (6y old)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
May 25
Jun 25
Aug 25
Sep 25
Oct 25
Nov 25
Dec 25
Jan 26
Feb 26
Mar 26
Apr 26
May 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 →💾 69 MB🔞 12+📱 iOS 17.0+🔖 v2.6.2🔄 updated 1mo ago🌐 EN📂 Education💰 Free🚀 Launched 2019 (6y old)
📝 About this app
A MODERN GRAPHING CALCULATOR ON THE iPHONE
1. Fast, Interactive Touch-Screen Graphing
2. Everything is where you’d expect it to be
3. Scrollable windows (no more spamming the up arrow keys)
4. Intelligent error messages
5. Convenient
WHY MAKE ANOTHER GRAPHING CALCULATOR APP?
1. We (the creators), once relied on graphing calculators, and after installing countless, similar apps, we couldn’t find anything useable. Hence, we made our own.
2. Before launching on the App Store, we personally worked with a limited, yet sizable, number of students to continuously improve the app.
HOW TO SEND FEEDBACK
1. Press the red feedback button.
1. Fast, Interactive Touch-Screen Graphing
2. Everything is where you’d expect it to be
3. Scrollable windows (no more spamming the up arrow keys)
4. Intelligent error messages
5. Convenient
WHY MAKE ANOTHER GRAPHING CALCULATOR APP?
1. We (the creators), once relied on graphing calculators, and after installing countless, similar apps, we couldn’t find anything useable. Hence, we made our own.
2. Before launching on the App Store, we personally worked with a limited, yet sizable, number of students to continuously improve the app.
HOW TO SEND FEEDBACK
1. Press the red feedback button.
🆕 What's New · v2.6.2
Just some general dusting and sweeping.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Calculate84
- Developer
- Century Light LLC
- Bundle ID
- com.calculate84
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- 12+
- Languages
- EN
Company
- Website
- Not found
- Tagline
- Calculate84 - Modern Graphing Calculator for iOS and iPad
- Description
- Never lose your calculator again! Calculate84 is a modern graphing calculator app for iOS and iPad featuring fast interactive graphs, scrollable windows, and intelligent error messages. Perfect for students and educators.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- OG image
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $1.8K/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
- Not found
- Phone
- 1635187664
- Contact page
- https://www.calculate84.com/support
- About page
- Not found
⭐Recent App Store Reviews49 latest · avg 4.22★ · 71.4% 5★ · 6.1% 1★
5★35 (71%)
4★2 (4%)
3★3 (6%)
2★6 (12%)
1★3 (6%)
+126 ratings/week
Praise: great ×10 recommend ×7 love ×7 perfect ×5 best ×3Complaints: hate ×1
Top positive
★★★★★ Review
Nice…
★★★★★ Cool Calculator
Great for doing math stuff…
Top negative
★☆☆☆☆ Hggdfok
Kya go in…
★☆☆☆☆ Horrible ads
This app is showing pornographic ads at the top. Horrible for an app that is targeted to children…
📈Ratings growth51,394 ratings+48% lifetimeShow 3-year history estimate ▾
Tracked (43 weeks) Pre-tracking estimate (36 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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