# Modular Arithmetic vs Classroom Spinners

The clearest difference is device support: Modular Arithmetic at 4 against Classroom Spinners's 2. Classroom Spinners's advantage is price ($0.99 vs $1.99). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

Modular Arithmetic costs $1.99 and Classroom Spinners $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Modular Arithmetic ships an update every 12 months, Classroom Spinners every 21 months. The most recent releases landed on September 17, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Modular Arithmetic | Classroom Spinners |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/modular-arithmetic/id687735575/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 21 months |
| Monetization | Paid | — |
| Size | 2 MB | 7 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPad, Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [Benjamin Burton](https://appshunter.io/developer/687735578) | [Ventura Educational Systems](https://appshunter.io/developer/371324172) |

## What reviewers say

### Modular Arithmetic

[App page](https://appshunter.io/ios/app/modular-arithmetic/id687735575)

Perform calculations with remainders using a chosen modulus. Supports large numbers, fast modular division and exponentiation, and displays a full calculation transcript. Ideal for understanding modular arithmetic's applications in math and computer science.

**Highlights:** Fixed modulus selection, Arbitrarily large numbers, Fast modular division and exponentiation, Full calculation transcript, Order of operations convention, External keyboard and Siri Shortcuts support

**Features:** Vision Pro support

**In-app purchases:** none


### Classroom Spinners

[App page](https://appshunter.io/ios/app/classroom-spinners/id1143588037)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Modular Arithmetic free?

Modular Arithmetic costs $1.99, with no in-app purchases.

### Is Classroom Spinners free?

Classroom Spinners costs $0.99, with no in-app purchases.

### Do Modular Arithmetic or Classroom Spinners have ads?

Neither Modular Arithmetic nor Classroom Spinners shows ads.

### Which is updated more often, Modular Arithmetic or Classroom Spinners?

Modular Arithmetic ships an update every 12 months, and Classroom Spinners every 21 months. Most recently, Modular Arithmetic was updated on September 17, 2026 and Classroom Spinners on September 13, 2026.

---

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