# Calculate84 vs EICSD

The clearest difference is rating: Calculate84 at 4.8 against EICSD's 3.0. Calculate84 also leads on update cadence (fortnightly vs every 9 months) and ratings volume (53K vs 2). EICSD's advantage is in-app purchases (none vs 6) and ads (none vs shown). On price there is nothing between them.

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

Calculate84 holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Calculate84 has 53K ratings behind it against 2, so its average is the more settled of the two.

Calculate84 ships an update fortnightly, EICSD every 9 months. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Calculate84 | EICSD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (53K ratings)](https://appshunter.io/ios/app/calculate84/id1459712793/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/eicsd/id1595619324/reviews) |
| Number of ratings | **53K** | 2 |
| Positive reviews | 74.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 9 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#111** | — |
| Size | 71 MB | 149 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) | [EAST IRONDEQUOIT CENTRAL SCHOOL DISTRICT INC](https://appshunter.io/developer/1458367974) |

## What reviewers say

### Calculate84

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

**Currently charting:** #111 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


### EICSD

[App page](https://appshunter.io/ios/app/eicsd/id1595619324)

Stay informed about school district events, customize notifications for your student's activities, and access weekly cafeteria menus. Get the latest district updates and easily find staff and department contact information.

**Highlights:** Event calendar with sharing, Customizable student organization notifications, Weekly cafeteria menus, District live feed 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 EICSD free?

EICSD is free to download, with no in-app purchases.

### Which has better reviews, Calculate84 or EICSD?

Calculate84 is rated higher. Calculate84 averages 4.8 out of 5 from 53K ratings, while EICSD averages 3.0 from 2 ratings.

### Do Calculate84 or EICSD have ads?

Calculate84 shows ads; EICSD does not.

### Which is updated more often, Calculate84 or EICSD?

Calculate84 ships an update fortnightly, and EICSD every 9 months. Most recently, Calculate84 was updated on October 16, 2026 and EICSD on October 9, 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.*