RadixRoll vs Convex Programmer's Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RadixRoll
Easily convert numbers between decimal, hexadecimal, binary, and Roman numeral systems. Supports a wide range of values and offers synchronized scrolling on iPad for efficient conversion.
- Decimal to Hexadecimal conversion
- Hexadecimal to Binary conversion
- Binary to Roman numeral conversion
- Roman numeral to Decimal conversion
- Synchronized scrolling on iPad
- Slider for two-base conversion on iPhone
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RadixRoll is a neat pedagogic radix converter developed by ApplicVision. The application is available on both iPhone and iPad and lets you easily shift between decimal, hexadecimal, binary and roman numbers. Number Ranges: Decimal: 99999999 Hexadecimal: FFFFFFF (268435455) Binary: 1111111111111111 (65535) Roman: MMMCMXCIX (3999) On iPad you can change all four radix scrolls at the same time, and on iPhone there's a slider to set which two number bases you want to display and convert between.
Convex Programmer's Calculator
Convert numbers between hexadecimal, decimal, octal, and binary. Perform byte flips, bit shifts, and calculate two's complement. Features bit indicators and word grouping for improved binary readability.
- Number base conversion
- Two's complement calculation
- Byte flipping for endianness
- Left and right bit shifting
- Binary readability enhancements
- Copy, paste, and clear functionality
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Easily convert between hexadecimal, decimal, octal, and binary. Calculate the two's complement of any number. Flip a number's bytes to switch its endianness. Bit-shift left and right. Bit indicators and word grouping make binary easier to read. Tap the number to copy, paste, and clear. Swipe left or right on the number to backspace.
Screenshots
Verdict
The clearest difference is rating: Convex Programmer's Calculator at 4.7 against RadixRoll's 4.0. Convex Programmer's Calculator also leads on update cadence (every 8 months vs every 44 months). RadixRoll's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price, review sentiment, ratings volume and ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Convex Programmer's Calculator holds the better App Store score, 4.7 against 4.0. Both are backed by a comparable volume of ratings — 5 and 6 respectively. Written reviews split almost evenly too, at 67% and 67% positive.
RadixRoll ships an update every 44 months, Convex Programmer's Calculator every 8 months. Both last shipped on June 11, 2026.
| Parameter | RadixRoll | Convex Programmer's Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (5 ratings) | 4.7 (6 ratings) — better |
| Positive reviews | 66.7% of reviews | 66.7% of reviews |
| Number of ratings | 5 | 6 — better |
| Update frequency | Every 44 months | Every 8 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 9 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | ApplicVision | Matthew Daigle |
Customer experience
RadixRoll
Convex Programmer's Calculator
In-app purchases
RadixRoll
No in-app purchases
Convex Programmer's Calculator
No in-app purchases
