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CruxDev.tech VS Screenwise App

Compare CruxDev.tech VS Screenwise App and see what are their differences

CruxDev.tech

300+ free browser-based developer utilities and engineering courses with zero-server tracking and 100% client-side privacy.

Rating
0 reviews
Pricing
Free
Alternatives Is it good?
Screenwise App

Block games, keep calls open, and turn times tables practice into earned screen time with Screenwise for Android. Kids earn their own screen time by learning math and other STEM subjects. Turn screen time battles into effortless learning

Rating
0 reviews
Pricing
Free Free trial
Alternatives Is it good?
you.bot
One API for 80+ AI models — LLM, image, video & music — priced up to 80% below the official APIs. Pay only for successful calls; failed runs refunded; credits never expire. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Developer Tools popularity
100% vs 0%
alternatives listed
15 vs 11

Base details

Website, pricing, platforms and company facts side by side.

CruxDev.tech
Screenwise App
Website cruxdev.tech screenwise.app
Pricing
Free
Free Free trial
Company Startup from India · 1 - 9 employees Startup from the United Kingdom · 2025
Listed in
Devtools Web Development Tools Productivity SaaS API Programming Testing Web Browsers Security & Privacy Developer Tools Design Tools Text Editors +9
Parental Control Parenting Safe Screentime Screen Time Mathematics Kids Education Games Educational Games Educational App Digital-wellbeing Times-tables Time Tracking +9

About CruxDev.tech and Screenwise App

In their own words, as submitted to SaaSHub.

CruxDev.tech
Screenwise App

CruxDev is an all-in-one developer toolbox and technical learning platform featuring over 300+ browser-based utilities and 70 engineering courses. Key Highlights: Zero-Server Privacy: 100% client-side execution. Your confidential code, JSON payloads, API tokens, JWTs, and keys never leave your...

Read more about CruxDev.tech

Screenwise is a screen time management app for Android that helps children develop stronger multiplication skills while keeping device use under control. Instead of only limiting apps with timers or blocks, Screenwise introduces a simple system where children unlock screen time by answering short...

Read more about Screenwise App

Features and specs

What each product offers, as listed by its team.

CruxDev.tech 8 features
Screenwise App 7 features
  • Zero-Server Architecture
    All calculations, encodings, and data processing execute 100% locally in your browser. Confidential code, API tokens, and JSON payloads are never transmitted to any server.
  • 300+ Developer Utilities
    Comprehensive client-side toolset including JSON formatters, JWT decoders, regex testers, UUID generators, color palettes, and CSS studios.
  • AI Prompt & Token Cost Estimator
    Accurate token counters and real-time cost estimation across leading LLM architectures including GPT-5, Claude, Gemini, and DeepSeek.
  • Web Cryptography Suite
    Client-side cryptographic hash generation (SHA-256, MD5, Keccak), HMAC calculation, symmetric encryption, and key generation using standard Web APIs.
  • Code & Data Converters
    Instant format conversions between JSON, YAML, TOML, XML, CSV, TypeScript interfaces, and Docker Run commands to Docker Compose.
  • No Sign-up Required
    Full, unrestricted access to every utility and calculator without account creation, API keys, or subscriptions.
  • Offline PWA Capability
    Lightweight Progressive Web App that caches locally, allowing developers to use tools even without an active internet connection.
  • CruxDev Academy
    Curated technical curriculum featuring 70 engineering courses covering distributed systems, systems architecture, backend scaling, and full-stack development.
  • Earn Screen Time Instead of Arguing
    Children earn screen time by answering multiplication questions, turning screen time limits into a clear reward system and reducing daily arguments about devices.
  • Improve Times Tables Automatically
    Short quizzes help children build fast recall of multiplication facts, making homework and maths lessons less stressful.
  • Control Games and Entertainment Apps
    Parents can limit games and other distracting apps while keeping important apps like phone or messages available.
  • Stop Late-Night Phone Use
    Bedtime locks automatically block entertainment apps at night so children sleep instead of staying on devices.
  • Prepare for the UK MTC
    Regular practice helps Year 4 pupils improve speed and confidence for the Multiplication Tables Check.
  • PIN-Protected Parent Controls
    Settings are protected with a parent PIN so children cannot change rules or disable limits.
  • Always-Allowed Apps
    Important apps such as phone or messages can remain accessible even when screen time is locked.

Analysis

An editorial look at what each product does well and who it suits.

CruxDev.tech
Screenwise App

No analysis of CruxDev.tech yet.

Overall verdict

  • I don't have verified, up-to-date information about Screenwise App (screenwise.app) specifically, so I can't confirm its quality, features, or reliability with certainty. Based on the name, it appears to be related to screen time tracking or digital wellbeing, but you should verify current details directly from the official website, app store reviews, and independent tech reviews before deciding.

Why this product is good

  • Unable to confirm specific features without access to current, verified data
  • App store ratings and user reviews would provide more reliable insight into real performance
  • Checking the official site for pricing, privacy policy, and supported platforms is recommended
  • Third-party review sites (e.g., Trustpilot, G2, Capterra) may offer additional user feedback

Recommended for

  • Users who want to independently verify app credibility through app stores before downloading
  • Individuals interested in screen time or digital wellbeing tools who should compare against established alternatives like Apple Screen Time, Google Digital Wellbeing, or Freedom
  • Anyone considering the app should review its privacy policy and permissions carefully given the sensitive nature of screen activity data

Videos

Walkthroughs and reviews on video.

CruxDev.tech 0 videos + Add
Screenwise App 2 videos + Add

No CruxDev.tech videos yet. You could help us improve this page by suggesting one.

Screenwise parental and screen time management app with an educational twist

More videos

  • - Tech Tuesday: Screenwise App helps parents get their kids off devices

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
CruxDev.tech
Screenwise App
100% 100%
Developer Tools
0% 0%
0% 0%
Parenting
100% 100%
100% 100%
Web Browsers
0% 0%
0% 0%
Parental Control
100% 100%

Questions & Answers

As answered by people managing CruxDev.tech and Screenwise App.

What makes your product unique?

CruxDev.tech's answer

CruxDev combines over 300+ essential developer utilities with a comprehensive 70-course engineering academy in a single unified workbench. Crucially, it operates on a strict zero-server privacy architecture: all transformations, cryptography, formatting, and file processing happen 100% locally inside the user's browser using Web APIs and WebAssembly. Sensitive code snippets, JSON payloads, and API tokens never leave the device.

Screenwise App's answer:

Screenwise turns screen time into something children earn through learning. Instead of only blocking apps, it helps parents reduce screen time arguments while giving children regular practice in times tables, MTC, and 11+ maths.

Why should a person choose your product over its competitors?

CruxDev.tech's answer

Most developer utility websites are fragmented, ad-heavy, or silently transmit sensitive payloads to remote backend servers. Desktop alternatives require heavy downloads and platform-specific installations. CruxDev delivers an instant, lightweight web and offline PWA experience across any operating system with zero sign-ups, guaranteed data isolation, and modern features like LLM token cost modeling that legacy toolkits lack.

Screenwise App's answer:

Most parental control apps only restrict access. Screenwise adds a clear learning incentive, so children work towards screen time by practicing maths. That makes it useful for parents who want less conflict, better habits, and real educational value from the same app.

How would you describe the primary audience of your product?

CruxDev.tech's answer

The primary audience consists of software engineers, full-stack developers, DevOps engineers, cloud architects, cybersecurity analysts, and technical students. It is especially suited for developers handling confidential payloads, API secrets, database schemas, and cryptographic keys who require reliable utilities that adhere to strict zero-trust privacy standards.

Screenwise App's answer:

Screenwise is mainly for parents of primary school children in the UK who want to manage screen time while helping their children improve multiplication, prepare for the MTC, and build stronger maths habits.

What's the story behind your product?

CruxDev.tech's answer

CruxDev was created out of the frustration of constantly juggling dozens of scattered single-purpose utility websites for daily programming tasks—formatting JSON on one site, decoding JWTs on another, generating hashes on a third—and worrying whether those servers were logging company data. It was engineered from the ground up as a fast, all-in-one developer companion where all processing remains strictly client-side.

Screenwise App's answer:

Screenwise was created to solve two common parent frustrations at once: too much screen time and the daily struggle to get children to practice maths. The idea was simple: connect screen time to learning, so children stay motivated and parents spend less time negotiating.

Which are the primary technologies used for building your product?

CruxDev.tech's answer

React, TypeScript, Vite, Tailwind CSS, Web Cryptography API, WebAssembly (Wasm), Canvas APIs, and Cloudflare Pages edge hosting.

Screenwise App's answer:

Use this only if accurate: Screenwise is built as an Android app with modern mobile technology, focused on reliable parental controls, app usage management, and a simple learning experience for families.

Who are some of the biggest customers of your product?

CruxDev.tech's answer

  • Independent Software Engineers & Consultants
  • Full-Stack Web Developers & DevOps Practitioners
  • Open Source Builders & AI Application Developers
  • Engineering Students & Technical Researchers

Screenwise App's answer:

Screenwise is primarily used by families who want to manage screen time while encouraging children to practice maths. It can also be adapted for educational settings where teachers want to motivate students with short multiplication practice.

Families with primary school children

Parents supporting times tables learning at home

Families preparing for the UK Multiplication Tables Check (MTC)

Students preparing for 11+ maths exams

Teachers and classrooms using multiplication practice activities

User comments

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