Comparison

Dev Calc Pro (Hex Dec Oct Bin) vs Smart Convert

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Binary, octal, decimal, hexadecimal conversion
  • Color hex code and RGB display
  • Large 19-digit decimal display
  • Conversion reset toggle
  • No ads (Pro Version)
Features
Read full description

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

About

Smart Convert

Easily switch numbers between various bases, from binary to base 62. Ideal for developers, students, and math enthusiasts needing quick and reliable conversions with fractional parts. Features include instant common base conversions, custom base support, and conversion history.

Highlights
  • Convert between bases 2 to 62
  • Quick mode for common bases
  • Custom mode for any base pair
  • Save and recall conversion history
  • Support for fractional numbers
  • Light and dark themes
  • Localized in 9 languages
Read full description

Smart Convert is the fastest way to switch numbers between bases — from binary all the way to base 62. Whether you're a developer debugging hex, a student learning binary, or just curious about number systems, Smart Convert gets you the answer in one tap. KEY FEATURES • Quick mode: instant conversion between binary, octal, decimal, and hexadecimal • Custom mode: convert between any two bases from 2 to 62 • History: every conversion is saved automatically — never re-type a number • Light & Dark themes: match your system or pick your preference • Decimal precision: convert numbers with fractional parts • Fully localized in 9 languages DESIGNED FOR • Software engineers working with hex, binary, or unusual encodings • Computer science students learning numeric systems • Math enthusiasts curious about base 36, base 62, and beyond • Anyone who needs a quick, reliable converter HOW TO USE 1. Open the Quick tab for the four common bases (2, 8, 10, 16) 2. Switch to the Custom tab for any base from 2 to 62 3. Pick the source and target bases, type your number — done 4. Tap History to recall any past conversion Free to use with optional ad-removal. No account, no tracking.

Screenshots

Dev Calc Pro (Hex Dec Oct Bin)4 screens
Smart Convert3 screens

Verdict

The call

The clearest difference is price: Smart Convert at Free against Dev Calc Pro (Hex Dec Oct Bin)'s $2.99. Smart Convert also leads on update cadence (every 3 weeks vs every 7 months). Dev Calc Pro (Hex Dec Oct Bin)'s advantage is rating (3.5 vs 3.0) and in-app purchases (none vs 1). On ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

Smart Convert is free to download; Dev Calc Pro (Hex Dec Oct Bin) costs $2.99 up front. Smart Convert sells 1 one-off in-app purchase. Dev Calc Pro (Hex Dec Oct Bin) asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Dev Calc Pro (Hex Dec Oct Bin) holds the better App Store score, 3.5 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

UpkeepUpdate frequency

Dev Calc Pro (Hex Dec Oct Bin) ships an update every 7 months, Smart Convert every 3 weeks. The most recent releases landed on July 18, 2026 and September 22, 2026 respectively.

Scorecard7 real differences · 3 level
Dev Calc Pro (Hex Dec Oct Bin) versus Smart Convert: the parameters behind the verdict, then further details
ParameterDev Calc Pro (Hex Dec Oct Bin)Smart Convert
Price$2.99Free — better
Rating3.5 (2 ratings) — better3.0 (2 ratings)
Positive reviews42.9% of reviews—
Number of ratings22
Update frequencyEvery 7 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better16.2
Further details — not scored
Size6 MB4 MB
Age rating4+4+
DeveloperQQ TSUBASAKoya Nambo

Customer experience

Dev Calc Pro (Hex Dec Oct Bin)

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews7 reviews
Positive42.9%
Neutral14.3%
Negative42.9%

Smart Convert

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Dev Calc Pro (Hex Dec Oct Bin)

No in-app purchases

1 purchases

Smart Convert

One-time1
  • No Ads$2.99

Questions

Is Dev Calc Pro (Hex Dec Oct Bin) free?
Dev Calc Pro (Hex Dec Oct Bin) costs $2.99, with no in-app purchases.
Is Smart Convert free?
Smart Convert is free to download, with in-app purchases available.
Which has better reviews, Dev Calc Pro (Hex Dec Oct Bin) or Smart Convert?
Dev Calc Pro (Hex Dec Oct Bin) is rated higher. Dev Calc Pro (Hex Dec Oct Bin) averages 3.5 out of 5 from 2 ratings, while Smart Convert averages 3.0 from 2 ratings.
Do Dev Calc Pro (Hex Dec Oct Bin) or Smart Convert have ads?
Smart Convert shows ads; Dev Calc Pro (Hex Dec Oct Bin) does not.
Which is updated more often, Dev Calc Pro (Hex Dec Oct Bin) or Smart Convert?
Dev Calc Pro (Hex Dec Oct Bin) ships an update every 7 months, and Smart Convert every 3 weeks. Most recently, Dev Calc Pro (Hex Dec Oct Bin) was updated on July 18, 2026 and Smart Convert on September 22, 2026.

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