# Simple Hex Calc vs GOYOJO CTG

The clearest difference is price: GOYOJO CTG at Free against Simple Hex Calc's $0.99. GOYOJO CTG also leads on update cadence (weekly vs every 5 months) and iOS requirement (12.0 vs 27.0). Simple Hex Calc's advantage is rating (4.5 vs 1.0) and ratings volume (8 vs 1). On ads, in-app purchases and device support there is nothing between them.

GOYOJO CTG is free to download; Simple Hex Calc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Simple Hex Calc holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Simple Hex Calc has 8 ratings behind it against 1, so its average is the more settled of the two.

Simple Hex Calc ships an update every 5 months, GOYOJO CTG weekly. The most recent releases landed on October 31, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Simple Hex Calc | GOYOJO CTG |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.5 (8 ratings)](https://appshunter.io/ios/app/simple-hex-calc/id335773208/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/goyojo-ctg/id6754304928/reviews) |
| Number of ratings | **8** | 1 |
| Positive reviews | 94.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 45 MB |
| Requires iOS | 27.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hiroki Ishiura](https://appshunter.io/developer/335773211) | [GOYOJO Industrial Technology (Shenzhen) Co., Ltd.](https://appshunter.io/developer/1718672053) |

## What reviewers say

### Simple Hex Calc

[App page](https://appshunter.io/ios/app/simple-hex-calc/id335773208)

This utility app provides IT programmers with a pocket calculator for performing arithmetic and logical operations on numbers in various bases. It offers extensive configuration options for bit length, signed/unsigned modes, and data display formats, with a reference manual included.

**Highlights:** Arithmetic and logical operations, Multiple number base support (2/8/10/16), Bit shift, rotate, set, clear, and order operations, Memory operations (save, load, swap), Configurable bit length and signed/unsigned modes, Cut, copy, and paste results, Reference manual included

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

**In-app purchases:** none


### GOYOJO CTG

[App page](https://appshunter.io/ios/app/goyojo-ctg/id6754304928)

Connect your device via Bluetooth to measure vehicle paint thickness. Analyze paint conditions with simple or professional modes, and receive alerts through sound or vibration. Export and share inspection results easily.

**Highlights:** Bluetooth connectivity to paint film meter, Measure vehicle paint thickness, Determine car paint condition, Simple and professional inspection modes, Sound and vibration alarms, Export and share inspection results

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Simple Hex Calc free?

Simple Hex Calc costs $0.99, with no in-app purchases.

### Is GOYOJO CTG free?

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

### Which has better reviews, Simple Hex Calc or GOYOJO CTG?

Simple Hex Calc is rated higher. Simple Hex Calc averages 4.5 out of 5 from 8 ratings, while GOYOJO CTG averages 1.0 from 1 ratings.

### Do Simple Hex Calc or GOYOJO CTG have ads?

Neither Simple Hex Calc nor GOYOJO CTG shows ads.

### Which is updated more often, Simple Hex Calc or GOYOJO CTG?

Simple Hex Calc ships an update every 5 months, and GOYOJO CTG weekly. Most recently, Simple Hex Calc was updated on October 31, 2026 and GOYOJO CTG on October 30, 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.*