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Scribbble.app VS CruxDev.tech

Compare Scribbble.app VS CruxDev.tech and see what are their differences

Scribbble.app

Scribble, draw, highlight and annotate anywhere, anytime on your screen.

Rating
0 reviews
Pricing
Freemium $6.99 / One-off
Alternatives Is it good?
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?
cobwebs.app
Tap a thing and the counter resets. A quiet, local-first day counter for the things you keep meaning to do. No account needed, no spreadsheet. sponsored

Which is more popular?

Productivity popularity
100% vs 0%
alternatives listed
1 vs 15

Base details

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

Scribbble.app
CruxDev.tech
Website scribbble.app cruxdev.tech
Pricing
Freemium $6.99 / One-off Official pricing
Free
Platforms
MacOS
—
Company Startup from India · 2025 Startup from India · 1 - 9 employees
Listed in
Presentations Mac Content Creation Teaching Tools Productivity +2
Devtools Web Development Tools Productivity SaaS API Programming Testing Web Browsers Security & Privacy Developer Tools Design Tools Text Editors +9

About Scribbble.app and CruxDev.tech

In their own words, as submitted to SaaSHub.

Scribbble.app
CruxDev.tech

Scribbble is a beautiful Mac app to scribble, draw, highlight and annotate directly on your screen. Perfect for teachers, streamers, YouTubers, designers and sales demos.

Read more about Scribbble.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

Features and specs

What each product offers, as listed by its team.

Scribbble.app 3 features
CruxDev.tech 8 features
  • Spotlight
    Grab user attention to a specific part of the screen
  • Measure
    Measure elements on the screen
  • Freehand draw
    Draw and annotate anything on the screen
  • 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.

Analysis

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

Scribbble.app
CruxDev.tech

Overall verdict

  • Scribbble.app appears to be a lightweight, niche design/collaboration tool aimed at quick sketching, wireframing, or visual note-taking, but there is limited public information, reviews, or track record available to fully verify its quality, reliability, or feature depth. It may be a good fit for casual or lightweight use cases, but users should proceed with some caution and test it themselves before committing to it for critical or professional workflows.

Why this product is good

  • Likely offers a simple, low-friction interface for quick sketches or visual brainstorming
  • May be useful for lightweight collaboration without the overhead of larger design tools
  • Browser-based accessibility (if applicable) could mean no downloads or installs required
  • Could be a good entry-level or free/low-cost alternative to heavier design software

Recommended for

  • Casual users looking for quick sketching or doodling tools
  • Teams needing lightweight visual brainstorming without complex features
  • Individuals testing simple wireframing before moving to more robust tools
  • Users who prioritize simplicity over advanced functionality

No analysis of CruxDev.tech yet.

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
Scribbble.app
CruxDev.tech
100% 100%
Productivity
0% 0%
0% 0%
Developer Tools
100% 100%
100% 100%
Presentations
0% 0%
0% 0%
Web Browsers
100% 100%

Questions & Answers

As answered by people managing Scribbble.app and CruxDev.tech.

What makes your product unique?

Scribbble.app's answer

  • Quick to use
  • Comprehensive toolset
  • Affordable

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.

How would you describe the primary audience of your product?

Scribbble.app's answer

Teachers, Content creators and presenters

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.

Why should a person choose your product over its competitors?

Scribbble.app's answer

Because it has most comprehensive toolset. Measure tool, spotlight are tools you won't generally find in other apps - and they really help enhance the whole screen sharing experience.

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.

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.

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.

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

User comments

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