# Calculate84 vs Marlboro CSD NY

The clearest difference is in-app purchases: Marlboro CSD NY at none against Calculate84's 6. Marlboro CSD NY also leads on ads (none vs shown) and iOS requirement (16.0 vs 18.0). Calculate84's advantage is update cadence (fortnightly vs every 5 months) and ratings volume (54K vs 4). On price there is nothing between them.

Both are free to download. Calculate84 sells 6 in-app purchases, starting at $2.99 per month. Marlboro CSD NY asks for nothing beyond the download.

Calculate84 holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Calculate84 has 54K ratings behind it against 4, so its average is the more settled of the two.

Calculate84 ships an update fortnightly, Marlboro CSD NY every 5 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Calculate84 | Marlboro CSD NY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (54K ratings)](https://appshunter.io/ios/app/calculate84/id1459712793/reviews)** | [4.5 (4 ratings)](https://appshunter.io/ios/app/marlboro-csd-ny/id1574423732/reviews) |
| Number of ratings | **54K** | 4 |
| Positive reviews | 74.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#141** | — |
| Size | 71 MB | 148 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Century Light LLC](https://appshunter.io/developer/1459712792) | [Marlboro Central School District](https://appshunter.io/developer/1574423734) |

## What reviewers say

### Calculate84

[App page](https://appshunter.io/ios/app/calculate84/id1459712793)

**Currently charting:** #141 Top Free · Education (US App Store)

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.

**Highlights:** Fast, interactive touch-screen graphing, Scrollable windows, Intelligent error messages, Intuitive interface, Designed for TI-84 users

**Features:** Family Sharing, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro Subscription | $2.99 | per month |
| Annual Pro Subscription | $6.99 | per year |
| Lifetime Subscription | $6.99 | one-time |
| Lifetime Subscription | $9.99 | one-time |
| Lifetime Subscription | $12.99 | one-time |
| Lifetime Pro Subscription | $29.99 | one-time |

**What reviewers like**

- 👍 Identical to TI-84 calculator
- 🚀 Seamless and intuitive user experience
- 💰 Affordable alternative to physical calculator
- 📱 Convenient to have on phone
- 🔍 Comprehensive functionality matching physical calculator

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 🔍 Missing some advanced features like regression types
- 🔒 Previous purchases removed without warning
- 💰 Subscription model can be expensive
- 📺 Intrusive ads in free version

**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

**Requested features**

- 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


### Marlboro CSD NY

[App page](https://appshunter.io/ios/app/marlboro-csd-ny/id1574423732)

Stay informed about school events, district updates, and cafeteria menus. Customize notifications for your student's organizations and easily access staff contact information. Never miss important announcements or activities within the school district.

**Highlights:** Event calendar with sharing options, Customizable notifications by organization, Weekly cafeteria menus, Live feed for district updates, Staff and department directory

**In-app purchases:** none


## Frequently asked questions

### Is Calculate84 free?

Calculate84 is free to download, with in-app purchases available.

### Is Marlboro CSD NY free?

Marlboro CSD NY is free to download, with no in-app purchases.

### Which has better reviews, Calculate84 or Marlboro CSD NY?

Calculate84 is rated higher. Calculate84 averages 4.8 out of 5 from 54K ratings, while Marlboro CSD NY averages 4.5 from 4 ratings.

### Do Calculate84 or Marlboro CSD NY have ads?

Calculate84 shows ads; Marlboro CSD NY does not.

### Which is updated more often, Calculate84 or Marlboro CSD NY?

Calculate84 ships an update fortnightly, and Marlboro CSD NY every 5 months. Most recently, Calculate84 was updated on November 3, 2026 and Marlboro CSD NY on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*