Dev Calc Pro (Hex Dec Oct Bin) vs Polyhedra 3D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dev Calc Pro (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. It is designed for developers and does not include scientific or unit conversion functions.
- Binary, octal, decimal, hexadecimal conversion
- Color hex code and RGB display
- Large 19-digit decimal display
- Conversion reset toggle
- No ads (Pro Version)
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The Calculator for Developer ※What is for Pro Version: No Ad & Full Screen 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
Polyhedra 3D
Explore and create intricate geometric shapes with ease. Apply various transformations and color schemes to generate unique visual designs. Experience your creations in augmented reality.
- Create and manipulate polyhedrons
- Apply Conway's transformations
- Thousands of visual combinations
- Save as still or animated images
- Augmented Reality experience
- No math knowledge required
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Create and manipulate beautiful polyhedrons without any mathematical knowledge needed. With many patterns, transformations, and color schemes to combine, you can create thousands of stunning visual combinations you may save as still or animated images. Best, see your creations alive around you thanks to Augmented Reality. Polyhedra is an application to represent and manipulate polyhedrons using Conway’s notation. You can apply Conway’s transformations to a seed polyhedron chosen from the Platonic solids (tetrahedron, cube, octahedron, dodecahedron and icosahedron), prisms, and antiprisms. Supported transformations are: ambo, bevel, chamfer, dual, expand, gyro, join, kis, lace, loft, meta, ortho, propellor, quinto, snub, stake, subdivide, triangulate, and truncate. Most important of all, no mathematics knowledge is needed to enjoy.
Screenshots
Verdict
The clearest difference is rating: Polyhedra 3D at 5.0 against Dev Calc Pro (Hex Dec Oct Bin)'s 3.5. Polyhedra 3D also leads on review sentiment (75% vs 43%) and price ($1.99 vs $2.99). Dev Calc Pro (Hex Dec Oct Bin)'s advantage is iOS requirement (8.0 vs 16.0). On ratings volume, update cadence, ads and in-app purchases 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
Dev Calc Pro (Hex Dec Oct Bin) costs $2.99 and Polyhedra 3D $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Polyhedra 3D holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews point the same way: 43% of Dev Calc Pro (Hex Dec Oct Bin)'s written reviews are positive against 75% of Polyhedra 3D's.
Dev Calc Pro (Hex Dec Oct Bin) ships an update every 7 months, Polyhedra 3D every 4 months. The most recent releases landed on July 18, 2026 and September 6, 2026 respectively.
| Parameter | Dev Calc Pro (Hex Dec Oct Bin) | Polyhedra 3D |
|---|---|---|
| Price | $2.99 | $1.99 — better |
| Rating | 3.5 (2 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 42.9% of reviews | 75.0% of reviews — better |
| Number of ratings | 2 | 4 — better |
| Update frequency | Every 7 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple TV |
| Requires iOS | 8.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 6 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | QQ TSUBASA | Laurent Rodier |
Customer experience
Dev Calc Pro (Hex Dec Oct Bin)
Polyhedra 3D
In-app purchases
Dev Calc Pro (Hex Dec Oct Bin)
No in-app purchases
Polyhedra 3D
No in-app purchases
Questions
Is Dev Calc Pro (Hex Dec Oct Bin) free?
Is Polyhedra 3D free?
Which has better reviews, Dev Calc Pro (Hex Dec Oct Bin) or Polyhedra 3D?
Do Dev Calc Pro (Hex Dec Oct Bin) or Polyhedra 3D have ads?
Which is updated more often, Dev Calc Pro (Hex Dec Oct Bin) or Polyhedra 3D?
Other comparisons
