Comparison

Simtools vs Dev Tool box

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

Head to head
About

Simtools

This application allows users to activate SIM cards and manage their inventory of chips. It also provides tools to administer and control sales personnel, effectively managing a vendor network.

Highlights
  • SIM card activation
  • Chip inventory control
  • Sales personnel management
  • Vendor network administration
Features
Read full description

Simtools es una aplicación a través de la cuál los usuarios pueden activar sim cards, además te permite llevar el control del inventario de los chips con los que se cuenta y administrar y controlar el personal es decir la red de los vendedores.

About

Dev Tool box

Features
Read full description

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.

Screenshots

Simtools4 screens
Dev Tool box2 screens

Verdict

The call

The clearest difference is ads: Simtools at none against Dev Tool box's shown. Simtools also leads on iOS requirement (15.1 vs 18.0). Dev Tool box's advantage is update cadence (every 3 weeks vs every 2 months). On price, 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

Simtools ships an update every 2 months, Dev Tool box every 3 weeks. The most recent releases landed on September 8, 2026 and September 17, 2026 respectively.

Scorecard3 real differences · 7 level
Simtools versus Dev Tool box: the parameters behind the verdict, then further details
ParameterSimtoolsDev Tool box
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.1 — better18.0
Further details — not scored
Size33 MB4 MB
Age rating17+4+
DeveloperKlayware SA de CVSeonggon Sim

In-app purchases

None

Simtools

No in-app purchases

None

Dev Tool box

No in-app purchases

Questions

Is Simtools free?
Simtools is free to download, with no in-app purchases.
Is Dev Tool box free?
Dev Tool box is free to download, with no in-app purchases.
Do Simtools or Dev Tool box have ads?
Dev Tool box shows ads; Simtools does not.
Which is updated more often, Simtools or Dev Tool box?
Simtools ships an update every 2 months, and Dev Tool box every 3 weeks. Most recently, Simtools was updated on September 8, 2026 and Dev Tool box on September 17, 2026.

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