# Modular Arithmetic vs Trigonometry Portal AR

The clearest difference is review sentiment: Modular Arithmetic at 100% against Trigonometry Portal AR's 0%. Modular Arithmetic also leads on rating (5.0 vs 1.0) and update cadence (every 12 months vs every 37 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Modular Arithmetic costs $1.99 and Trigonometry Portal AR $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Modular Arithmetic holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 100% of Modular Arithmetic's written reviews are positive against 0% of Trigonometry Portal AR's.

Modular Arithmetic ships an update every 12 months, Trigonometry Portal AR every 37 months. The most recent releases landed on September 27, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Modular Arithmetic | Trigonometry Portal AR |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/modular-arithmetic/id687735575/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/trigonometry-portal-ar/id1358343863/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 37 months |
| Monetization | Paid | Paid |
| Size | 2 MB | 33 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPad |
| 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


### Trigonometry Portal AR

[App page](https://appshunter.io/ios/app/trigonometry-portal-ar/id1358343863)

Explore trigonometry concepts in an augmented reality environment. This app creates virtual rooms where you can interact with information about key terms and ideas from the high school curriculum. Walk around, tap on objects, and hear definitions read aloud.

**Highlights:** Augmented reality exploration, Virtual trigonometry rooms, Interactive information access, Siri-read aloud definitions, Scrollable term lists

**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 Trigonometry Portal AR free?

Trigonometry Portal AR costs $1.99, with no in-app purchases.

### Which has better reviews, Modular Arithmetic or Trigonometry Portal AR?

Modular Arithmetic is rated higher. Modular Arithmetic averages 5.0 out of 5 from 4 ratings, while Trigonometry Portal AR averages 1.0 from 1 ratings.

### Do Modular Arithmetic or Trigonometry Portal AR have ads?

Neither Modular Arithmetic nor Trigonometry Portal AR shows ads.

### Which is updated more often, Modular Arithmetic or Trigonometry Portal AR?

Modular Arithmetic ships an update every 12 months, and Trigonometry Portal AR every 37 months. Most recently, Modular Arithmetic was updated on September 27, 2026 and Trigonometry Portal AR on June 1, 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.*