# Discrete Math vs CalculusOne

The clearest difference is price: Discrete Math at Free against CalculusOne's $3.99. Discrete Math also leads on iOS requirement (15.1 vs 17.6). CalculusOne's advantage is in-app purchases (none vs 3) and update cadence (every 2 days vs every 3 weeks). On ads and device support there is nothing between them.

Discrete Math is free to download; CalculusOne costs $3.99 up front. Discrete Math sells 3 in-app purchases, starting at $4.99 per 7 days. CalculusOne asks for nothing beyond the download.

Discrete Math ships an update every 3 weeks, CalculusOne every 2 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Discrete Math | CalculusOne |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 39 MB | 3 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mobin Akhter](https://appshunter.io/developer/1812505286) | [KEVIN CAISSIE](https://appshunter.io/developer/6791150591) |

## What reviewers say

### Discrete Math

[App page](https://appshunter.io/ios/app/discrete-math-discretica/id6761345113)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Yearly Premium | $29.99 | per year |
| Lifetime Premium | $64.99 | one-time |


### CalculusOne

[App page](https://appshunter.io/ios/app/calculusone/id6791156285)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Discrete Math free?

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

### Is CalculusOne free?

CalculusOne costs $3.99, with no in-app purchases.

### Do Discrete Math or CalculusOne have ads?

Neither Discrete Math nor CalculusOne shows ads.

### Which is updated more often, Discrete Math or CalculusOne?

Discrete Math ships an update every 3 weeks, and CalculusOne every 2 days. Most recently, Discrete Math was updated on October 25, 2026 and CalculusOne on October 28, 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.*