Software Alternatives, Accelerators & Startups

warmup.rocks VS Code4Startup

Compare warmup.rocks VS Code4Startup and see what are their differences

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warmup.rocks logo warmup.rocks

warmup.rocks keeps your CDN cache warm in every edge location worldwide: Cloudflare, Fastly, Akamai, CloudFront and more. Warming from 42 countries, hit-ratio analytics.
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Code4Startup logo Code4Startup

Learn Ruby on Rails, Python, AngularJS, NodeJS, React, Ionic by cloning AirBnb , TaskRabbit, Tinder, Product Hunt, Fiverr and . more.
  • warmup.rocks Homepage
    Homepage //
    2026-07-18
  • warmup.rocks Dashboard
    Dashboard //
    2026-07-18

A CDN isn't one cache. It's hundreds of independent ones, and most of them are cold.

Cloudflare alone runs 300+ data centers, and each keeps its own cache. A page cached in Frankfurt is still ice cold in Tokyo, so the first visitor per region pays the full origin round trip. In our measurement of 408,000 CDN requests, a cache miss was 3.5x slower than a hit at the median.

warmup.rocks fixes that by requesting your pages from 42 countries on 6 continents on a schedule. Each request enters the CDN network in a different region and fills the edge location it lands in: 90+ locations per warming pass.

What makes it different: verification. We record the cache status (cf-cache-status, x-cache and equivalents) of every single response and show you the hit ratio per edge location, per run. Warming without verification is hoping.

Features

  • Sitemap auto-discovery, nested sitemap indexes resolved before every run
  • CDN auto-detection: Cloudflare, Fastly, CloudFront, Akamai, bunny.net, CDN77
  • Scheduled runs every 1-3 hours depending on plan
  • Deploy hooks + official GitHub Action: re-warm right after your CI purges the cache
  • Mobile cache variant (second pass with a mobile user agent)
  • Email alerts when a WAF rule blocks warming runs

Free tools, no signup: multi-location cache checker and website speed test.

Nothing to install: no plugin, no DNS change. 7-day free trial, plans from $15/month.

  • Code4Startup Landing page
    Landing page //
    2023-06-20

warmup.rocks

$ Details
paid Free Trial $15 / Monthly (1 project, 100 pages per run, Warm every 3 hours)
Platforms
Web Wordpress WooCommerce Wix ReactJS
Release Date
2026 July
Startup details
Country
Switzerland
Founder(s)
Kevin Kyburz
Employees
1 - 9

warmup.rocks features and specs

  • Free Resource
    Warmup.rocks offers a collection of button hover effects and micro-interactions completely free of charge, making it accessible to developers and designers of all budgets.
  • Copy-Paste Code
    The site provides ready-to-use CSS and HTML code snippets that can be easily copied and implemented directly into projects, saving development time.
  • Visual Preview
    Users can see live previews of each animation effect before deciding to use it, allowing for quick visual assessment without needing to test code first.
  • Variety of Effects
    The collection includes numerous different button animation styles, giving developers multiple creative options to enhance user interface interactivity.
  • Lightweight Implementation
    The animations are typically built with pure CSS or minimal JavaScript, making them lightweight and easy to integrate without heavy dependencies.

Code4Startup features and specs

  • Practical Learning Approach
    Code4Startup offers a hands-on approach to learning by enabling users to build real-world projects from scratch. This method is beneficial for visualizing complex concepts and applying theoretical knowledge practically.
  • Real Startup Projects
    The platform provides courses that mirror real startup projects, helping users gain valuable insights into building scalable applications that mimic tech industry standards.
  • Wide Range of Technologies
    Code4Startup covers numerous modern technologies and frameworks, allowing learners to pick and choose skills that align with current market demands.
  • Community Support
    Users have access to a community where they can interact with fellow learners and instructors, which helps in getting timely support and feedback.
  • Flexible Learning
    The platform offers self-paced courses, providing the flexibility to learn at one's own pace, which is ideal for working professionals or those with busy schedules.

Possible disadvantages of Code4Startup

  • Limited Free Content
    The availability of free resources is quite limited, which might not be ideal for learners who want to explore the platform extensively before committing financially.
  • Project Complexity
    Some projects might be too complex for complete beginners, as they assume a certain level of prior knowledge, which could be discouraging.
  • Higher Price Point
    Compared to some other online learning platforms, the pricing for Code4Startup courses can be relatively high, potentially limiting access for budget-conscious users.
  • Technical Glitches
    Users have occasionally reported technical issues with the platform's interface and functionality, which can disrupt the learning experience.
  • Limited Course Updates
    Some users have noted that the content is not updated as frequently as expected, which can result in outdated course material in the rapidly evolving tech space.

Analysis of Code4Startup

Overall verdict

  • Code4Startup is a good platform for those who prefer learning through practical, project-based approaches.

Why this product is good

  • Code4Startup offers real-world projects that mimic actual startup environments, providing an engaging way to learn coding and development skills. They focus on teaching through the creation of web and mobile applications, which helps learners understand how to apply their skills in practical scenarios.

Recommended for

  • Aspiring entrepreneurs who want to create their own tech products.
  • Beginners looking to break into web or mobile app development.
  • Self-learners who benefit from hands-on, project-based learning.
  • Individuals interested in learning by building projects similar to popular startups.

warmup.rocks videos

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Code4Startup videos

How To Build Uber Eats - Code4StartUp Review

Category Popularity

0-100% (relative to warmup.rocks and Code4Startup)
CDN
100 100%
0% 0
Education
0 0%
100% 100
Web Cache
100 100%
0% 0
Online Learning
0 0%
100% 100

Questions & Answers

As answered by people managing warmup.rocks and Code4Startup.

Who are some of the biggest customers of your product?

warmup.rocks's answer

  • this:matters GmbH (the Swiss web agency behind the product, running client sites through it)

What makes your product unique?

warmup.rocks's answer

Most cache warmers run from one server, so they only warm the one CDN edge location that server happens to hit. CDNs like Cloudflare cache per data center, 300+ of them, and a HIT in Frankfurt says nothing about Singapore.

warmup.rocks is different:

  • Warms from 42 countries on 6 continents, so the cache gets filled where your visitors actually are
  • Verifies every response (cf-cache-status, x-cache) instead of just firing requests and hoping
  • Shows hit ratio per edge location, so you see whether warming actually works
  • Nothing to install: no plugin, no script tag, no DNS change

Why should a person choose your product over its competitors?

warmup.rocks's answer

Three reasons:

  • Geography. Competitors warm from a single region. We warm from 42 countries, which is the whole point of a CDN cache.
  • Verification. We read the cache status header of every single response and report the actual hit ratio per location, so you see whether warming works instead of taking it on faith.
  • Deploy integration. A deploy hook or our GitHub Action re-warms the cache right after you ship, which is exactly when it's coldest.

Plans start at $15/month with a 7-day free trial.

How would you describe the primary audience of your product?

warmup.rocks's answer

Developers, agencies and store owners who run sites behind a CDN (Cloudflare, Fastly, CloudFront, Akamai, bunny.net) and serve visitors in more than one region. Typical cases:

  • WordPress/WooCommerce sites where preload plugins stop at the server cache
  • Shopify and Magento stores with a long product tail that never stays warm on its own
  • Anyone whose deploys purge the edge cache and leave the first visitor per location with a slow load

What's the story behind your product?

warmup.rocks's answer

I run a web agency in Switzerland, and for years I believed our sites were fast because we put them behind Cloudflare and saw HIT in the headers. Then I measured from other continents: pages that loaded in milliseconds from Zurich took multiple seconds from Tokyo or Sรฃo Paulo, because each edge location keeps its own cache and most of them were cold.

I built a warmer for our own client sites first, then measured 408,000 CDN requests and found a miss is 3.5ร— slower than a hit at the median. That data convinced me this should be a product.

Which are the primary technologies used for building your product?

warmup.rocks's answer

  • Node.js + TypeScript with Hono as the web framework
  • SQLite for storage
  • Astro for the public site, vanilla JavaScript for the dashboard
  • Warming requests go through dedicated datacenter proxies in 42 countries

The whole thing runs on a plain VPS behind Cloudflare, which keeps it fast and cheap without a pile of infrastructure.

User comments

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Social recommendations and mentions

Based on our record, Code4Startup seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

warmup.rocks mentions (0)

We have not tracked any mentions of warmup.rocks yet. Tracking of warmup.rocks recommendations started around Jul 2026.

Code4Startup mentions (1)

  • Need some Serious Assistance with Ruby and MaterializedCSS
    I have been having an ongoing issue with MaterializedCSS. I am following a tutorial. This is my 3rd forum site posting for assistance. This is what I wrote on Stack overflow. Source: over 4 years ago

What are some alternatives?

When comparing warmup.rocks and Code4Startup, you can also consider the following products

Cache Status - Cache Status is an easy cache status and management tool located right in your address-bar.

Codeplace - Learn how to code by building real web apps

Cache Enabler - A lightweight caching plugin that creates static HTML files and stores them on your web server.

edX - Best Courses. Top Institutions. Learn anytime, anywhere.

CacheFly - The Fastest Global Throughput CDN

Free Code Camp - Learn to code by helping nonprofits.