# Xygos vs BitBitCS

The clearest difference is iOS requirement: BitBitCS at 13.0 against Xygos's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Xygos sells 1 in-app purchase, starting at $2.99 per 7 days and BitBitCS sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Xygos ships an update weekly, BitBitCS every 8 days. The most recent releases landed on September 18, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | Xygos | BitBitCS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (38 ratings)](https://appshunter.io/ios/app/xygos-math-in-motion/id6451348655/reviews)** | — |
| Number of ratings | **38** | — |
| Positive reviews | 88.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 8 days |
| Monetization | Free with in-app purchases | — |
| Size | 101 MB | 33 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Xygos LLC](https://appshunter.io/developer/1671065233) | [LIN SUN](https://appshunter.io/developer/1764594272) |

## What reviewers say

### 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 |


### BitBitCS

[App page](https://appshunter.io/ios/app/bitbitcs/id6661013090)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | per month |


## Frequently asked questions

### Is Xygos free?

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

### Is BitBitCS free?

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

### Do Xygos or BitBitCS have ads?

Neither Xygos nor BitBitCS shows ads.

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

Xygos ships an update weekly, and BitBitCS every 8 days. Most recently, Xygos was updated on September 18, 2026 and BitBitCS on May 16, 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.*