# Calculus vs Xygos

The clearest difference is review sentiment: Xygos at 88% against Calculus's 33%. Xygos also leads on rating (4.7 vs 3.5) and update cadence (weekly vs every 16 months). Calculus's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Calculus sells 13 one-off in-app purchases and Xygos sells 1 in-app purchase, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Xygos holds the better App Store score, 4.7 against 3.5. That said, the two scores are not equally well evidenced: Xygos has 39 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 33% of Calculus's written reviews are positive against 88% of Xygos's.

Calculus ships an update every 16 months, Xygos weekly. The most recent releases landed on September 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Calculus | Xygos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (4 ratings)](https://appshunter.io/ios/app/calculus-pro/id1638196645/reviews) | **[4.7 (39 ratings)](https://appshunter.io/ios/app/xygos-math-in-motion/id6451348655/reviews)** |
| Number of ratings | 4 | **39** |
| Positive reviews | 33.3% of reviews | **88.2% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 40 MB | 101 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Richard Ssenyonjo](https://appshunter.io/developer/1528776742) | [Xygos LLC](https://appshunter.io/developer/1671065233) |

## What reviewers say

### Calculus

[App page](https://appshunter.io/ios/app/calculus-pro/id1638196645)

Learn calculus comprehensively through 10 chapters and reinforce your understanding with an interactive quiz game. This app caters to both beginners and advanced learners, offering hints and challenging problems. Enjoy a clear, adaptable interface with font size adjustments and light/dark mode support.

**Highlights:** 10-chapter calculus curriculum, Interactive calculus quiz game, Beginner to advanced learning paths, Adjustable font size, Light and dark mode support, Covers differentiation, integration, and differential equations

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get 1,000 Coins | $0.99 | one-time |
| Get 5,000 Coins | $1.99 | one-time |
| Get 10,000 Coins | $2.99 | one-time |
| Unlock Calculus 1 | $2.99 | one-time |
| Unlock Calculus 2 | $2.99 | one-time |
| Unlock Calculus 3 | $2.99 | one-time |
| Unlock Chapter 5 | $2.99 | one-time |
| Unlock Calculus 8 | $2.99 | one-time |
| Unlock Calculus 9 | $2.99 | one-time |
| Unlock Calculus 4 | $2.99 | one-time |
| Unlock Calculus 6 | $2.99 | one-time |
| Unlock Calculus 7 | $2.99 | one-time |
| Unlock Calculus 10 | $2.99 | one-time |


### Xygos

[App page](https://appshunter.io/ios/app/xygos-math-in-motion/id6451348655)

Learn math interactively by solving problems directly on-screen with intuitive gestures. This app offers step-by-step solutions and real-time feedback for algebra and calculus, cutting learning time in half.

**Highlights:** Gesture-based problem solving, Step-by-step solutions, Real-time feedback and hints, Covers Calculus 1 and Algebra, Adaptive learning, Supports various math subjects

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Xygos Infinity | $2.99 | per 7 days |


## Frequently asked questions

### Is Calculus free?

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

### Is Xygos free?

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

### Which has better reviews, Calculus or Xygos?

Xygos is rated higher. Calculus averages 3.5 out of 5 from 4 ratings, while Xygos averages 4.7 from 39 ratings.

### Do Calculus or Xygos have ads?

Neither Calculus nor Xygos shows ads.

### Which is updated more often, Calculus or Xygos?

Calculus ships an update every 16 months, and Xygos weekly. Most recently, Calculus was updated on September 27, 2026 and Xygos on October 24, 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.*