MathGraph vs Calculate84
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MathGraph
Explore and learn about graphing common geometric equations like circles, ellipses, parabolas, and hyperbolas. Dynamically adjust formulas with sliders to see real-time graph updates. Test your knowledge with an interactive quiz mode.
- Graph circles, ellipses, parabolas, hyperbolas
- Dynamic formula adjustment with sliders
- Interactive graph updates
- Quiz Me mode for knowledge testing
- Show Me mode for hints
- List of point values
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An interactive iPad app for graphing circles, ellipses, parabolas and hyperbolas Are you interested in learning about graphing common geometrical equations? Do you have trouble remembering the formula for a circle, ellipse, parabola or hyperbola? This iPad app allows you to interact with these equations in a dynamic intuitive way. Use sliders to dynamically modify the formula's and see the graph update to reflect your changes. Got it down pat? Try the Quiz Me mode and to answer questions about your formula by touching the right point on the graph. Need a hint? Switch back to the Show Me mode or bring up the list of point values. go to https://sites.google.com/site/mathgraphipadapp/ to download a lesson plan from Bettie Hahn at Kings Academy to use with with app.
Calculate84
This app offers a modern graphing calculator experience on your iPhone. It features fast, interactive touch-screen graphing, scrollable windows, and intelligent error messages for a more intuitive user experience. Designed to be a usable alternative to physical graphing calculators.
- Fast, interactive touch-screen graphing
- Scrollable windows
- Intelligent error messages
- Intuitive interface
- Designed for TI-84 users
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Graphing made for iPhone Calculate84 brings the graphing calculator experience to iPhone with a fast, touch-friendly design. What you can do: • Plot and explore graphs with smooth touch controls • Find familiar calculator functions quickly • Scroll naturally through equations and results • Get clearer, more helpful error messages • Send feedback directly from the app Why we built Calculate84 We relied on graphing calculators ourselves and wanted an app that felt easier to use on a modern phone. Before launch, we worked with students to refine the experience, and we continue improving it based on user feedback. Send feedback Tap the red Feedback button in the app. Terms of Use (EULA): https://calculate84.com/terms-of-use
Screenshots
Verdict
The clearest difference is rating: Calculate84 at 4.8 against MathGraph's 2.6. Calculate84 also leads on update cadence (fortnightly vs every 5 months) and ratings volume (54K vs 9). MathGraph's advantage is in-app purchases (none vs 6) and ads (none vs shown). On price 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
Both are free to download. Calculate84 sells 6 in-app purchases, starting at $2.99 per month. MathGraph asks for nothing beyond the download.
Calculate84 holds the better App Store score, 4.8 against 2.6. That said, the two scores are not equally well evidenced: Calculate84 has 54K ratings behind it against 9, so its average is the more settled of the two. Written reviews complicate that: 91% of MathGraph's written reviews are positive against 75% of Calculate84's, so the app with the better star average is not the one people write more warmly about.
MathGraph ships an update every 5 months, Calculate84 fortnightly. Both last shipped on October 23, 2026.
| Parameter | MathGraph | Calculate84 |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (9 ratings) | 4.8 (54K ratings) — better |
| Positive reviews | 90.9% of reviews — better | 74.6% of reviews |
| Number of ratings | 9 | 54K — better |
| Update frequency | Every 5 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Best chart rank | — | #98 — better |
| Devices | iPad | iPhone, iPad, Mac — better |
| Requires iOS | 6.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 1 MB | 71 MB |
| Age rating | 4+ | 12+ |
| Developer | Katherine Philip | Century Light LLC |
Customer experience
MathGraph
Calculate84
Bugs and requests
MathGraph
Not enough reviews yet to summarise bugs or requests.
Calculate84
Reported bugs
4 issues- Crashes when using 2-sample T/Z interval functions
- Incorrect results for inverse trig functions
- Issues with graphing parabolas and tracing points
- Regression equation not displayed correctly
Requested features
5 requests- Add TVM solver functionality
- Implement more regression types
- Allow disabling of ads for free users
- Restore previous purchase benefits
- Optimize for mobile experience instead of emulating physical calculator
In-app purchases
MathGraph
No in-app purchases
Calculate84
- Monthly Pro Subscription3 Days trial$2.991 Month
- Annual Pro Subscription7 Days trial$6.991 Year
- Lifetime Subscription$6.99
- Lifetime Subscription$9.99
- Lifetime Subscription$12.99
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- Lifetime Pro Subscription$29.99
Questions
Is MathGraph free?
Is Calculate84 free?
Which has better reviews, MathGraph or Calculate84?
Do MathGraph or Calculate84 have ads?
Which is updated more often, MathGraph or Calculate84?
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