# Notation Chess vs QuantumOrb

Notation Chess and QuantumOrb are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Notation Chess | QuantumOrb |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/notation-chess/id6775319199/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Monetization | Free | — |
| Size | 2 MB | 1 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Zheng Liang](https://appshunter.io/developer/6775319203) | [Viktor Shcherban](https://appshunter.io/developer/1617545413) |

## What reviewers say

### Notation Chess

[App page](https://appshunter.io/ios/app/notation-chess/id6775319199)

Practice chess visualization and play games using only standard notation, directly from your Apple Watch. This app offers adjustable difficulty and engine settings, with the ability to review moves and peek at the board when needed.

**Highlights:** Play chess on Apple Watch, Practice with standard chess notation, Adjustable difficulty and engine settings, Review move history, Peek at the board feature, Undo moves

**Features:** Apple Watch app

**In-app purchases:** none


### QuantumOrb

[App page](https://appshunter.io/ios/app/quantumorb/id6789332620)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Notation Chess free?

Notation Chess is free to download, with no in-app purchases.

### Is QuantumOrb free?

QuantumOrb is free to download, with no in-app purchases.

### Do Notation Chess or QuantumOrb have ads?

Neither Notation Chess nor QuantumOrb shows ads.

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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.*