Calculate84
Intended for use with TI-84
How much does Calculate84 cost?
Prices are current as of 30 Sept 2026.
2 subscriptions from $2.99
In the United States, Calculate84 has 2 subscriptions priced $2.99 – 6.99. Free trials run 3 days or 7 days.
| Subscription | Period | Price |
|---|---|---|
| Monthly Pro Subscription | MonthlyTrial: 3 days | $2.99 |
| Annual Pro Subscription | AnnualTrial: 7 days | $6.99 |
2 one-time purchases from $6.99
In the United States, Calculate84 has 2 one-time purchases priced $6.99 – 29.99.
| Product | Price |
|---|---|
| Lifetime Subscription | $6.99 – 12.99 |
| Lifetime Pro Subscription | $29.99 |
10+ alternatives to Calculate84
| Calculate84 |   GradeWay for HAC |   Graphing Calculator X84 |   BigFuture School |   Knowt: AI Flashcards & Notes |   Taculator 84 Graphing Calc |   Ncalc - Graphing Calculator 84 |   Desmos Graphing Calculator |   Common App |   Coursicle |   Desmos Scientific Calculator | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Rating / 5 | 4.8 | 4.8 | 4.5 | 4.6 | 4.6 | 4.4 | 4.6 | 4.4 | 3.1 | 4.7 | 4.5 |
| Reviews | 55K | 74K | 54K | 18K | 16K | 12K | 9.3K | 4.4K | 1.1K | 830 | 693 |
| Released | 2019 | 2020 | 2018 | 2023 | 2023 | 2019 | 2020 | 2013 | 2020 | 2017 | 2018 |
| Monthly price | $2.99 | — | — | — | $19.99 | $3.99 | $1.99 | — | — | $4.99 | — |
| Annual price | $6.99 | $4.99 | — | — | $119.99 | $14.99 | $2.99 | — | — | $29.99 | — |
| One-time price | $9.99 | — | $5.99 | — | — | $7.99 | $5.99 | — | — | $99.99 | — |
The going rate for each plan in United States, in its own currency, shaded from the cheapest price on the row to the dearest. Plans fewer than four in ten of the priced apps sell are left out.
Calculate84 reviews
4.8 out of 5, based on 55,396 reviews.
What people like
- Works just like the real thing
- Cheaper than buying a physical calculator
- Great for high school and college
- Helps students who can't afford one
What they complain about
- Ads interrupt you constantly
- Buttons are too small
- Many features locked behind paywall
- App crashes or runs slow
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
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
Why are there advertisements? No one who uses this app is going to see an ad at the top of their screen and go buy a box of ritz crackers. There's no point. If you want people to buy the stuff. Show it when you show them the premium for 2.99 a month.
Lagging past week
I love this app so much. I have a shortcut to it on my phone home screen, have told my friends to download it regardless of if they need a calculator app, etc. I have an average 30+ mins of screen time on this app alone for every calculation I need to do... until this past week. Out of seemingly nowhere, 5ish days ago, the entire app has been extremely slow. Like, type a number in and it shows up on the screen seconds later. Nothing else on my phone has been affected. Calculate84, I am one of your biggest fans, and if this issue is resolved I would love to update this review to the 5 stars you deserve.
Wrong answers for exponential equations
When I entered “Ans^-10”, Ans being 1e-1000; The wrong answer this gave me “1e-10000” instead of the correct “1e10000”. I noticed this many more times before while calculating big numbers like that, before crashing. Otherwise, this is a great calculator app, and I hope to see it get better!
Yeee
It’s tuff
Why?
Everything is locked behind a paywall, Why even pretend it’s free?
Good in general
In general looks fine. The multiply symbol is too small
Gute Funktionen, aber DatenschutzProbleme
Grundsätzlich gute Funktionen und vernünftig zu bedienen, aber es gibt sage und schreibe mehrere 100 Interessenten, denen man während der Einrichtung zugriff auf persönliche Daten werden soll. Damit führt sich die kostenlose Version selber ins abseits, im letzten. Kann man auch nicht mehr en bloc ab wählen, sondern muss sich mühsam durch alle Anbieter quälen. Hat bei uns auf dem iPhone schon über 15 Minuten gedauert, dann abgebrochen. Datensammeln auf einem ganz neuen Niveau, keine Empfehlung.
Was convenient, now slowed
The app was a great convenience when I downloaded it a couple years ago. But lately, the app feedback has been significantly when I’ve tried to type in numbers. It has become more of an inconvenience due to the delay, sometimes lack of response.
72.4 times cos(58) is not 8.62 it’s 38.36
72.4 times cos(58) is not 8.62 it’s 38.36. I checked google and apple calculator
Y’all took away ad free for early adopters.
Restore purchase doesn’t work either. What a shame. That deserves a 1 star.
Hello, the app looks really good and it seems to function about right.
I still don’t know how to work with it properly, so can someone please explain to me how do I get it to look like the first picture.
Removal of key features
This used to be my go to app when I needed a graphing calculator. Unfortunately they have locked the ability to view all parts of your graph by simply dragging with your fingers behind a pay wall. This makes using the app way less seamless. I recommend finding an alternative.
Close enough
Easy to use but not like the actual calculator on some parts
has saved my life
got me through AP Calc and IB math. i love it!!!
Pro
Why are you locking features behind a subscription paywall? It’s a calculator, not a game.
Looking good so far
I like the idea. 2nd>angle graph>min&max need to be fixed tho
Ads
Why the hell are there ads. I’m already miserable enough doing my homework
Weird
Kinda weird layout
literally can calc big numbers
great job
Desmos
Desmos is free dog why we charging money for limitless bounding
Not for statistics
Glitches and closes, erases all data put into stats lists. Has no statistics option on Vars. Highly do not recommend if using for statistics
Solid
Where is SinReg?
Really Useful
This calculator app is very useful for homework
Removed my Subscription Payment Without Warning
A while ago, I paid about 7$ to have no ads and support the developers. Really loved the app and used it often. Genuinely well built. Earlier this year, however, I noticed that I once again had ads, even though all my other App Store purchases were fine. I couldn’t write the review since I was using a beta version of the app. Now that I am able to leave a review, I am utterly disappointed that there was no communication from the developers that previous purchases would be removed as the system would change to a subscription based service.
can’t use tvm solver
that’s literally the thing we came here for, and you have to PAY PREMIUM for it?! smh, not worth it
Review
The buttons to small which lead to lots of misclicks but overall good calculator.
Best calculator app
All functions of TI-84 for free. A lifesaver for broke high school and college students
Fake
I already bought it for $10 after days it is again telling to purchase please try na fix it
Love this app, but charged me too much for the annuel subscription
I bought a year subscription (9,99$) but it charged me 45,98$ for some reason. I wish i could have a refund of 35,99$, but I cant find a way to contact the company. I love the calculator, i am a teacher and it helps me to show it to the students, but i think its unfortunate it charged me more for the annual subscription…
Math is kind of a challenge and the curser is so frustrating
Math is my favorite subject in school and the curser refuses to move when you make mistakes in math and you can’t even remove the numbers or symbols
Exactly what you pay for
It works exactly like how you expect it to. It’s literally a full fledged TI-84 calculator that’s on your phone. You have to pay the 30 dollars to actually use all of the features but that’s way cheaper than ones you can get at the store. This is a must have for anybody in school
Don’t use.
I’ve had this app for 1 day and after using it for maybe 2 hours the calculator got burned into my screen. Not sure how or why but that shouldn’t happen.
No apps
One significant shortcoming is that none of the TI-84 apps are available (if you press the APPS button the only option is quit).
Awesome!
This calculator is great I love how much it resembles the hand held version but I also really appreciate the little updates that allow you to edit your equations more easily than the hand held TI84 (or at least the one I have). This App is great I would highly recommend it.
Abo 😄😄😄
=> deinstalliert
Works for a lot but not everything
I use it all the time for school work but I’m unable to find a button for sinusoidal regression, that the Texas Instruments ti-84 has. As sinreg
5 Years in and Still my Go-to Calculator app
Way past school age at this point but I still use this for all my calculating needs. A definite must-have for any smartphone user
Cant graph the Regression Equation
First thing I tried was to edit the table under Stat which seems to work fine. I then calculated for the Linear regression equation ax+b which it did but was missing a(the slope) and only displayed b(y intercept). When you copy it over to Y= you wont be able to bring the equation up using VARS. This app is not bad for a basic usage as calculator but there are a lot of functions missing.
inverse trig ratios dont work
i did inverse cos of 0.78… and it gave me 0.6…, the UI however is beautiful
Calculate84 price by country
A monthly subscription costs $1.88 in Nigeria and $4.62 in Hungary — 2× more for the same thing. Below is the going rate for each plan in every country that sells it — the middle price of what the app charges there, in the country's own currency with the dollar equivalent beneath it.
| Country | Monthly | Annual | One-time |
|---|---|---|---|
| Afghanistan | $2.99 | $6.99 | $9.99 |
| Albania | $3.99 | $7.99 | $11.99 |
| Algeria | $2.99 | $6.99 | $9.99 |
| Angola | $2.99 | $6.99 | $9.99 |
| Anguilla | $2.99 | $6.99 | $9.99 |
| Antigua And Barbuda | $2.99 | $6.99 | $9.99 |
| Argentina | $2.99 | $6.99 | $9.99 |
| Armenia | $3.99 | $7.99 | $11.99 |
| Australia | A$4.99$3.49 | A$9.99$6.99 | A$14.99$10.48 |
| Austria | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Azerbaijan | $2.99 | $6.99 | $11.99 |
| Bahamas | $2.99 | $7.99 | $9.99 |
| Bahrain | $2.99 | $7.99 | $9.99 |
| Barbados | $3.99 | $7.99 | $11.99 |
| Belarus | $3.99 | $7.99 | $11.99 |
| Belgium | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Belize | $2.99 | $6.99 | $9.99 |
| Benin | $3.99 | $7.99 | $11.99 |
| Bermuda | $2.99 | $6.99 | $9.99 |
| Bhutan | $2.99 | $6.99 | $9.99 |
| Bolivia | $2.99 | $6.99 | $9.99 |
| Bosnia & Herzegovina | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Botswana | $2.99 | $6.99 | $9.99 |
| Brazil | R$14.90$2.86 | R$39.90$7.66 | R$59.90$11.50 |
| British Virgin Islands | $2.99 | $6.99 | $9.99 |
| Brunei Darussalam | $2.99 | $6.99 | $9.99 |
| Bulgaria | €3.49$3.97 | €7.49$8.52 | €9.99$11.37 |
| Burkina Faso | $2.99 | $6.99 | $9.99 |
| Cambodia | $2.99 | $7.99 | $9.99 |
| Cameroon | $3.99 | $7.99 | $11.99 |
| Canada | CA$3.99$2.81 | CA$9.99$7.04 | CA$12.99$9.15 |
| Cape Verde | $2.99 | $6.99 | $9.99 |
| Cayman Islands | $2.99 | $6.99 | $9.99 |
| Chad | $2.99 | $6.99 | $9.99 |
| Chile | CLP 2,990$3.11 | CLP 6,990$7.27 | CLP 9,990$10.39 |
| China | CN¥22.00$3.27 | CN¥48.00$7.14 | CN¥68.00$10.12 |
| Colombia | COP 14,900$4.51 | COP 29,900$9.06 | COP 49,900$15.12 |
| Congo | $2.99 | $6.99 | $11.99 |
| Congo, Democratic Republic | $2.99 | $6.99 | $9.99 |
| Costa Rica | $2.99 | $6.99 | $9.99 |
| Cote Divoire | $2.99 | $6.99 | $11.99 |
| Croatia | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Cyprus | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Czech Republic | CZK 79.00$3.68 | CZK 199.00$9.28 | CZK 249.00$11.61 |
| Denmark | DKK 29.00$4.41 | DKK 59.00$8.98 | DKK 89.00$13.55 |
| Dominica | $2.99 | $6.99 | $9.99 |
| Dominican Republic | $2.99 | $6.99 | $9.99 |
| Ecuador | $2.99 | $6.99 | $9.99 |
| Egypt | EGP 99.99$1.92 | EGP 249.99$4.80 | EGP 499.99$9.60 |
| El Salvador | $2.99 | $6.99 | $9.99 |
| Estonia | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Fiji | $2.99 | $6.99 | $9.99 |
| Finland | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| France | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Gabon | $2.99 | $6.99 | $9.99 |
| Gambia | $2.99 | $6.99 | $9.99 |
| Georgia | $3.99 | $7.99 | $11.99 |
| Germany | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Ghana | $3.99 | $7.99 | $11.99 |
| Greece | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Grenada | $2.99 | $6.99 | $9.99 |
| Guatemala | $2.99 | $6.99 | $9.99 |
| Guinea-bissau | $2.99 | $6.99 | $9.99 |
| Guyana | $2.99 | $6.99 | $9.99 |
| Honduras | $2.99 | $6.99 | $9.99 |
| Hong Kong | HK$22.00$2.81 | HK$58.00$7.40 | HK$88.00$11.22 |
| Hungary | HUF 1,490$4.62 | HUF 2,990$9.26 | HUF 4,490$13.91 |
| Iceland | $3.99 | $7.99 | $11.99 |
| India | ₹299.00$3.11 | ₹699.00$7.28 | ₹999.00$10.40 |
| Indonesia | IDR 49,000$2.72 | IDR 119,000$6.62 | IDR 199,000$11.06 |
| Iraq | $2.99 | $6.99 | $9.99 |
| Ireland | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Israel | ₪9.90$3.22 | ₪24.90$8.11 | ₪29.90$9.74 |
| Italy | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Jamaica | $2.99 | $6.99 | $9.99 |
| Japan | ¥400$2.54 | ¥1,000$6.36 | ¥1,500$9.53 |
| Jordan | $2.99 | $6.99 | $9.99 |
| Kazakhstan | KZT 1,490.00$3.38 | KZT 3,490.00$7.92 | KZT 5,990.00$13.59 |
| Kenya | $3.99 | $7.99 | $11.99 |
| Kosovo | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Kuwait | $2.99 | $6.99 | $9.99 |
| Kyrgyzstan | $2.99 | $7.99 | $9.99 |
| Lao Peoples Democratic Republic | $2.99 | $6.99 | $9.99 |
| Latvia | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Lebanon | $2.99 | $6.99 | $9.99 |
| Liberia | $2.99 | $6.99 | $9.99 |
| Libya | $2.99 | $6.99 | $9.99 |
| Lithuania | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Luxembourg | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Macao | $2.99 | $6.99 | $9.99 |
| Macedonia | $2.99 | $6.99 | $9.99 |
| Madagascar | $2.99 | $6.99 | $9.99 |
| Malawi | $2.99 | $6.99 | $9.99 |
| Malaysia | MYR 14.90$3.65 | MYR 29.90$7.33 | MYR 49.90$12.23 |
| Maldives | $2.99 | $6.99 | $9.99 |
| Mali | $2.99 | $6.99 | $9.99 |
| Malta | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Mauritania | $2.99 | $6.99 | $9.99 |
| Mauritius | $2.99 | $6.99 | $11.99 |
| Mexico | MX$69.00$4.06 | MX$149.00$8.76 | MX$199.00$11.70 |
| Micronesia | $2.99 | $6.99 | $9.99 |
| Moldova | $3.99 | $7.99 | $11.99 |
| Mongolia | $2.99 | $6.99 | $9.99 |
| Montenegro | €2.99$3.40 | €6.99$7.95 | €9.99$11.37 |
| Montserrat | $2.99 | $6.99 | $9.99 |
| Morocco | $2.99 | $6.99 | $11.99 |
| Mozambique | $2.99 | $6.99 | $9.99 |
| Myanmar | $2.99 | $6.99 | $9.99 |
| Namibia | $2.99 | $6.99 | $9.99 |
| Nauru | $2.99 | $6.99 | $9.99 |
| Nepal | $2.99 | $6.99 | $11.99 |
| Netherlands | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| New Zealand | NZ$4.99$2.82 | NZ$12.99$7.34 | NZ$19.99$11.29 |
| Nicaragua | $2.99 | $6.99 | $9.99 |
| Niger | $2.99 | $6.99 | $9.99 |
| Nigeria | NGN 2,500.00$1.88 | NGN 5,900.00$4.44 | NGN 14,900.00$11.21 |
| Norway | NOK 39.00$4.09 | NOK 89.00$9.34 | NOK 129.00$13.54 |
| Oman | $2.99 | $6.99 | $9.99 |
| Pakistan | PKR 900$3.25 | PKR 1,900$6.86 | PKR 2,900$10.47 |
| Palau | $2.99 | $6.99 | $9.99 |
| Panama | $2.99 | $6.99 | $9.99 |
| Papua New Guinea | $2.99 | $6.99 | $9.99 |
| Paraguay | $2.99 | $6.99 | $9.99 |
| Peru | PEN 12.90$3.77 | PEN 29.90$8.74 | PEN 44.90$13.13 |
| Philippines | ₱179.00$2.86 | ₱399.00$6.38 | ₱599.00$9.58 |
| Poland | PLN 14.99$3.90 | PLN 39.99$10.41 | PLN 49.99$13.02 |
| Portugal | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Qatar | QAR 9.99$2.74 | QAR 24.99$6.87 | QAR 39.99$10.99 |
| Romania | RON 14.99$3.23 | RON 39.99$8.62 | RON 49.99$10.77 |
| Russia | RUB 249.00$2.95 | RUB 599.00$7.10 | RUB 899.00$10.66 |
| Rwanda | $2.99 | $6.99 | $9.99 |
| Sao Tome & Principe | $2.99 | $6.99 | $9.99 |
| Saudi Arabia | SAR 12.99$3.46 | SAR 29.99$8.00 | SAR 39.99$10.66 |
| Senegal | $2.99 | $6.99 | $11.99 |
| Serbia | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Seychelles | $2.99 | $6.99 | $9.99 |
| Sierra Leone | $2.99 | $6.99 | $9.99 |
| Singapore | SGD 3.98$3.11 | SGD 9.98$7.80 | SGD 14.98$11.70 |
| Slovakia | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Slovenia | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Solomon Islands | $2.99 | $6.99 | $9.99 |
| South Africa | ZAR 59.99$3.66 | ZAR 149.99$9.14 | ZAR 199.99$12.19 |
| Spain | €2.99$3.40 | €7.99$9.09 | €9.99$11.37 |
| Sri Lanka | $2.99 | $6.99 | $9.99 |
| St. Kitts and Nevis | $2.99 | $6.99 | $9.99 |
| St. Lucia | $2.99 | $6.99 | $9.99 |
| St. Vincent & The Grenadines | $2.99 | $6.99 | $9.99 |
| Suriname | $2.99 | $6.99 | $9.99 |
| Swaziland | $2.99 | $6.99 | $9.99 |
| Sweden | SEK 39.00$3.92 | SEK 99.00$9.94 | SEK 129.00$12.95 |
| Switzerland | CHF 3.00$3.61 | CHF 7.00$8.41 | CHF 9.00$10.82 |
| Taiwan | NT$90.00$2.83 | NT$220.00$6.92 | NT$320.00$10.06 |
| Tajikistan | $2.99 | $7.99 | $9.99 |
| Tanzania | TZS 9,900.00$3.74 | TZS 19,900.00$7.52 | TZS 29,900.00$11.30 |
| Thailand | THB 99.00$2.95 | THB 249.00$7.41 | THB 399.00$11.88 |
| Tonga | $2.99 | $6.99 | $9.99 |
| Trinidad and Tobago | $2.99 | $6.99 | $9.99 |
| Tunisia | $2.99 | $6.99 | $9.99 |
| Turkey | TRY 99.99$2.04 | TRY 249.99$5.10 | TRY 499.99$10.20 |
| Turkmenistan | $2.99 | $6.99 | $9.99 |
| Turks and Caicos | $2.99 | $6.99 | $9.99 |
| Uganda | $3.99 | $7.99 | $11.99 |
| Ukraine | $3.99 | $7.99 | $11.99 |
| United Arab Emirates | AED 12.99$3.54 | AED 24.99$6.81 | AED 39.99$10.90 |
| United Kingdom | £2.99$3.97 | £6.99$9.27 | £9.99$13.25 |
| United States | $2.99 | $6.99 | $9.99 |
| Uruguay | $2.99 | $6.99 | $9.99 |
| Uzbekistan | $2.99 | $7.99 | $9.99 |
| Vanuatu | $2.99 | $6.99 | $9.99 |
| Venezuela | $2.99 | $6.99 | $9.99 |
| Vietnam | ₫79,000$3.05 | ₫199,000$7.68 | ₫299,000$11.54 |
| Yemen | $2.99 | $6.99 | $9.99 |
| Zambia | $2.99 | $6.99 | $11.99 |
| Zimbabwe | $3.99 | $7.99 | $11.99 |
Calculate84 FAQ
- Is Calculate84 free?
- Yes. The app and its basic features are free, in all 174 countries it sells in. Premium features are paid: they start from $2.99 (US), across 2 subscriptions and 2 one-time purchases.
- How much does Calculate84 cost per month?
- Monthly Pro Subscription is $2.99 (US). The annual plan works out cheaper per month: $6.99 a year.
- Does Calculate84 have a free trial?
- Yes — free trials of 3 days or 7 days (US), depending on the plan.
- Where is Calculate84 cheapest?
- A monthly subscription costs NGN 2,500.00 (≈$1.88) in Nigeria and HUF 1,490 (≈$4.62) in Hungary, its cheapest and dearest countries.
- What are the best alternatives to Calculate84?
- GradeWay for HAC (4.8 from 73,673 reviews, premium from $4.99), Graphing Calculator X84 (4.5 from 53,750 reviews, premium from $5.99) and BigFuture School (4.6 from 18,364 reviews).
Calculate84 download
Last updated 1 month ago.
Calculate84 sells in 174 countries. It was released 7 years and 1 month ago, on 17 Aug 2019. It holds a 4.8 rating from 55,396 reviews.
Supports 1 language: English.
How much does Calculate84 make?
Third-party estimates for the last 30 days, worldwide — not the store's own figures, which Apple publishes for nobody.
Revenue by plan
- Annual 44%
- Monthly 28%
- One-time 27%
Revenue by country
- United States 98%
- Canada 1%
- Germany 0%
- Sweden 0%