Calculate84 subscription: cost, reviews, how to cancel

• App Store rating4.8★ from 52,699 ratings
• Cheapest subscription$2.99 per month
• Reviews mentioning billing, last 12 months5 of 149 reviews

On this page: what it costs, how to cancel, what reviewers say.

What the data says

• Free trial converts to a paid plan3 days free trial, then $2.99 per month

What Calculate84 costs

Download: Free. Subscriptions start at $2.99 per month.

• Monthly Pro Subscription3 days free trial, then renews every month$2.99
• Annual Pro Subscription7 days free trial, then renews every year$6.99

How to cancel Calculate84

1. Open Settings on your iPhone and tap your name at the top.
2. Tap Subscriptions.
3. Select Calculate84 (listed under a plan name such as Monthly Pro Subscription).
4. Tap Cancel Subscription and confirm. You keep access until the end of the paid period.

If the app is not in that list, it was not billed through Apple. Cancel it with the developer instead: support page or website.

Charged after cancelling or during a trial? Request a refund at reportaproblem.apple.com within 90 days.

What reviewers say

Reported bugs

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.

Recent one-star reviews

Locking graphing behind a paywall insane.horrible quality, pop up ads, janky interface, restricted graphing. you can just bypass it with the trace functionality but it’s absolutely outrageous. Horrible app.

Why?Everything is locked behind a paywall, Why even pretend it’s free?

Y’all took away ad free for early adopters.Restore purchase doesn’t work either. What a shame. That deserves a 1 star.

Recent five-star reviews

Calculate84 is reliable and has minimal advertisements for the qualityI am very satisfied

Amazing app!I’m an educator and the good this app has done for some of my students who can’t afford a calculator is inestimable

YeeeIt’s tuff

About the developer

Century Light LLC has published on the App Store since Aug 17, 2019: 2 app(s), 0 of them no longer in the store.

• Calculate84 for Institutions4.9★

Alternatives to Calculate84

• Photomath4.8★
• Scientific Calculator Plus 9914.7★
• Mathway: Math Problem Solver4.9★
• Symbolab - AI Math Solver App4.6★

Also similar: Calculator ∞ (4.7★), Taculator 84 Graphing Calc (4.5★)

Questions people ask

How much does Calculate84 cost?

Download: Free. Subscriptions start at $2.99 per month.

How do I cancel Calculate84?

On your iPhone open Settings, tap your name, tap Subscriptions, select Calculate84 and tap Cancel Subscription. You keep access until the end of the paid period.

Does Calculate84 have a free trial?

Yes: Monthly Pro Subscription offers a 3 days free trial, then $2.99 per month.

Is Calculate84 free to use?

The app is available for free, but it does include in-app purchases and advertisements. This allows users to try the core functionality before deciding to invest further.

Calculate84 in one paragraph

Calculate84 by Century Light LLC is a Education app for iPhone. Download: Free. Subscriptions start at $2.99 per month across 2 plan(s). App Store rating 4.8 from 52,699 ratings. 5 of 149 reviews in the last 12 months mention charges, subscriptions, refunds or cancelling (3%). The developer has 2 app(s) on the App Store, 0 no longer listed. Cancel through Settings › Subscriptions on the iPhone. Data verified Sep 8, 2026 by AppsLupa.

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