# Graycode vs 古汉语字典大全

The clearest difference is price: 古汉语字典大全 at Free against Graycode's $2.99. 古汉语字典大全 also leads on rating (4.0 vs 3.0). Graycode's advantage is in-app purchases (none vs 4) and ads (none vs shown). On ratings volume, update cadence and device support there is nothing between them.

古汉语字典大全 is free to download; Graycode costs $2.99 up front. 古汉语字典大全 sells 4 in-app purchases, starting at $0.99 per month. Graycode asks for nothing beyond the download.

古汉语字典大全 holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews complicate that: 67% of Graycode's written reviews are positive against 56% of 古汉语字典大全's, so the app with the better star average is not the one people write more warmly about.

Graycode ships an update every 10 months, 古汉语字典大全 every 6 months. The most recent releases landed on October 11, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Graycode | 古汉语字典大全 |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/graycode/id548428653/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/id1461998995/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | **66.7% of reviews** | 56.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 6 months** |
| Monetization | Paid | — |
| Size | 2 MB | 77 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Duo Pisceses, Inc.](https://appshunter.io/developer/850707063) | [运涛 余](https://appshunter.io/developer/977049266) |

## What reviewers say

### Graycode

[App page](https://appshunter.io/ios/app/graycode/id548428653)

This utility converts numbers between decimal, hexadecimal, binary, and Gray code formats. Changes to one value automatically update the others, making it a convenient tool for engineers. It also features an animated demonstration of the Tower of Hanoi puzzle.

**Highlights:** Decimal, hex, binary, Gray code conversion, Real-time updates, Handy calculator for engineers, Animated Tower of Hanoi solution, Supports iPhone, iPad, iPod

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

**In-app purchases:** none


### 古汉语字典大全

[App page](https://appshunter.io/ios/app/id1461998995)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $0.99 | per month |
| 年度会员 | $0.99 | per year |
| 解锁所有功能 | $0.99 | one-time |
| 永久会员 | $2.99 | one-time |


## Frequently asked questions

### Is Graycode free?

Graycode costs $2.99, with no in-app purchases.

### Is 古汉语字典大全 free?

古汉语字典大全 is free to download, with in-app purchases available.

### Which has better reviews, Graycode or 古汉语字典大全?

古汉语字典大全 is rated higher. Graycode averages 3.0 out of 5 from 2 ratings, while 古汉语字典大全 averages 4.0 from 1 ratings.

### Do Graycode or 古汉语字典大全 have ads?

古汉语字典大全 shows ads; Graycode does not.

### Which is updated more often, Graycode or 古汉语字典大全?

Graycode ships an update every 10 months, and 古汉语字典大全 every 6 months. Most recently, Graycode was updated on October 11, 2026 and 古汉语字典大全 on October 2, 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.*