Graycode vs Developer Calc Hex Dec Oct Bin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Graycode
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.
- Decimal, hex, binary, Gray code conversion
- Real-time updates
- Handy calculator for engineers
- Animated Tower of Hanoi solution
- Supports iPhone, iPad, iPod
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This app is used to convert numbers among decimal, hex, binary and gray code. If a user changes any one of these numbers, the other ones will change accordingly. It is a handy calculator for engineers to obtain the binary or gray code values from a decimal, or vise versa. In addition, an animated solution of a Hanoi Tower with three disks is also demonstrated based on the input number.
Developer Calc Hex Dec Oct Bin
This app converts numbers between binary, octal, decimal, and hexadecimal bases on a single screen. It also displays color hex codes and RGB values simultaneously. It's designed for developers needing quick base conversions and color code referencing.
- Binary, octal, decimal, hexadecimal conversion
- Color hex code and RGB display
- Large 19-digit decimal display
- Conversion reset toggle
- Maximum and minimum value display
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The Calculator for Developer Developer Calc includes the following features: ■ Binary, octal, decimal, and hexadecimal in one screen ■ Color Hex code, RGB in one screen ■ The maximum value : 0x0FFF FFFF FFFF FFFF ■ The minimum value : 0xF000 0000 0000 0000 ■ The large 19-digit display of decimal ■ Conversion reset ON/OFF The following features are not included: (Just For Simple) ■ Scientific: trigonometric, hyperbolic, and logarithmic functions ■ Conversion: length, area, volume, speed, weight, temperature; unit arithmetic
Screenshots
Verdict
The clearest difference is price: Developer Calc Hex Dec Oct Bin at Free against Graycode's $2.99. Developer Calc Hex Dec Oct Bin also leads on rating (4.1 vs 3.0) and update cadence (every 5 months vs every 10 months). Graycode's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Developer Calc Hex Dec Oct Bin is free to download; Graycode costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Developer Calc Hex Dec Oct Bin holds the better App Store score, 4.1 against 3.0. That said, the two scores are not equally well evidenced: Developer Calc Hex Dec Oct Bin has 15 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 67% of Graycode's written reviews are positive against 76% of Developer Calc Hex Dec Oct Bin's.
Graycode ships an update every 10 months, Developer Calc Hex Dec Oct Bin every 5 months. The most recent releases landed on September 25, 2026 and October 6, 2026 respectively.
| Parameter | Graycode | Developer Calc Hex Dec Oct Bin |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 3.0 (2 ratings) | 4.1 (15 ratings) — better |
| Positive reviews | 66.7% of reviews | 76.3% of reviews — better |
| Number of ratings | 2 | 15 — better |
| Update frequency | Every 10 months | Every 5 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Duo Pisceses, Inc. | QQ TSUBASA |
Customer experience
Graycode
Developer Calc Hex Dec Oct Bin
In-app purchases
Graycode
No in-app purchases
Developer Calc Hex Dec Oct Bin
No in-app purchases
Questions
Is Graycode free?
Is Developer Calc Hex Dec Oct Bin free?
Which has better reviews, Graycode or Developer Calc Hex Dec Oct Bin?
Do Graycode or Developer Calc Hex Dec Oct Bin have ads?
Which is updated more often, Graycode or Developer Calc Hex Dec Oct Bin?
Other comparisons
