Graycode vs Roman Number Converter
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.
Roman Number Converter
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Simply convert your Roman Numbers to Arabic (Indian) Numbers and vice versa! Also you can check if the Roman Number, you gave as input is in the valid Format.
Screenshots
Verdict
The clearest difference is price: Roman Number Converter at Free against Graycode's $2.99. Graycode's advantage is iOS requirement (12.0 vs 26.0). On update cadence, ads, 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
Roman Number Converter is free to download; Graycode costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Graycode ships an update every 10 months, Roman Number Converter every 5 months. The most recent releases landed on September 25, 2026 and October 1, 2026 respectively.
| Parameter | Graycode | Roman Number Converter |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 10 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 2 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Duo Pisceses, Inc. | STRICS IT GmbH |
In-app purchases
Graycode
No in-app purchases
Roman Number Converter
No in-app purchases
Questions
Is Graycode free?
Is Roman Number Converter free?
Do Graycode or Roman Number Converter have ads?
Which is updated more often, Graycode or Roman Number Converter?
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