Comparison

Dev Tool box vs VoltKit

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

Head to head
About

Dev Tool box

Features
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DevToolbox is an essential collection of developer utilities designed to streamline your coding workflow. Whether you're debugging APIs, encoding data, or formatting JSON, DevToolbox provides the tools you need in a clean, native interface. KEY FEATURES: • JSON Formatter & Validator Format, validate, and beautify JSON with syntax highlighting. Tree view visualization for better structure understanding. Built-in search functionality to find text within large JSON files. • URL Encoder/Decoder Quickly encode or decode URLs for API testing and web development. RFC 3986 compliant encoding for maximum compatibility. • Base64 Encoder/Decoder Convert text to Base64 and vice versa. Supports URL-safe Base64 and auto-padding. Perfect for encoding credentials, tokens, and data URIs. • JWT Decoder Decode and inspect JSON Web Tokens without external services. View header, payload, and signature details instantly. Automatically handles "Bearer " prefix. • Text Case Converter Transform text between various cases: camelCase, PascalCase, snake_case, kebab-case, SCREAMING_SNAKE_CASE, dot.case, UPPERCASE, lowercase, and Title Case. Smart parsing for any input format. • Hash Generator Generate secure hashes using MD5, SHA-1, SHA-256, and SHA-512 algorithms. Essential for checksum verification and security testing. • Unix Timestamp Converter Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds. Multiple output formats including ISO 8601, UTC, and local time. • Number Base Converter Convert between Decimal, Binary, Octal, and Hexadecimal. Auto-detects input format with 0x, 0b, 0o prefix support. • String Escape/Unescape Escape special characters for JSON strings or unescape encoded text. Handles \n, \t, \", \\ and more. • Color Converter Convert HEX colors to RGB and HSL with live preview. Generates ready-to-use SwiftUI, UIKit, and CSS code snippets. WHY DEVTOOLBOX? • Native Performance: Built with SwiftUI for blazing-fast performance • Privacy First: All processing happens locally on your device • Universal App: Works seamlessly on iPhone, iPad, and Mac • Dark Mode Support: Easy on the eyes during late-night coding sessions • No Ads, No Tracking: Just pure functionality • Offline Ready: No internet connection required Perfect for mobile developers, web developers, API developers, QA engineers, security professionals, and students learning to code. DevToolbox is your pocket-sized development companion. Stop switching between websites and online tools - get everything you need in one native app.

About

VoltKit

Features
Read full description

VoltKit is a premium, high-performance electrical toolkit designed for engineers, electricians, and hobbyists. With a sleek, minimalist search-first interface and a suite of precision calculators, it turns complex electrical formulas into instant results. From Ohm’s Law to Wire Gauge analysis, VoltKit is the only electrical companion you need

Screenshots

Dev Tool box2 screens
VoltKit4 screens

Verdict

The call

The clearest difference is ads: VoltKit at none against Dev Tool box's shown. VoltKit also leads on iOS requirement (13.0 vs 18.0). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Dev Tool box ships an update every 3 weeks, VoltKit every 10 days. The most recent releases landed on October 4, 2026 and September 30, 2026 respectively.

Scorecard2 real differences · 4 level
Dev Tool box versus VoltKit: the parameters behind the verdict, then further details
ParameterDev Tool boxVoltKit
PriceFreeFree
Update frequencyEvery 3 weeksEvery 10 days — better
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS18.013.0 — better
Further details — not scored
Size4 MB22 MB
Age rating4+4+
DeveloperSeonggon Simkudrethan varol

In-app purchases

None

Dev Tool box

No in-app purchases

None

VoltKit

No in-app purchases

Questions

Is Dev Tool box free?
Dev Tool box is free to download, with no in-app purchases.
Is VoltKit free?
VoltKit is free to download, with no in-app purchases.
Do Dev Tool box or VoltKit have ads?
Dev Tool box shows ads; VoltKit does not.
Which is updated more often, Dev Tool box or VoltKit?
Dev Tool box ships an update every 3 weeks, and VoltKit every 10 days. Most recently, Dev Tool box was updated on October 4, 2026 and VoltKit on September 30, 2026.

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