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Savvy Scratch VS useEffect.dev

Compare Savvy Scratch VS useEffect.dev and see what are their differences

Savvy Scratch

Advantage-play style scratch-off analysis across 19 states. For players looking for a better way to play.

Rating
0 reviews
Pricing
Freemium $5 / Monthly (or yearly 50$)
Alternatives Is it good?
useEffect.dev

Interactive course to learn and master React Hooks

Rating
0 reviews
Alternatives Is it good?
HIVLY.APP
Add a photo and one sentence. Hivly writes the caption, designs the post, and schedules it for Facebook, Instagram, and LinkedIn. 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.

Base details

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

Savvy Scratch
useEffect.dev
Website savvyscratch.com useeffect.dev
Pricing
Freemium $5 / Monthly (or yearly 50$) Official pricing
Official pricing
Company Startup from the United States · 2026 —
Listed in
SaaS Mobile Apps Consumer Insights Productivity App Store Mobile OS +3
JavaScript Online Courses React

About Savvy Scratch and useEffect.dev

In their own words, as submitted to SaaSHub.

Savvy Scratch
useEffect.dev

Savvy Scratch is a lottery scratch-off companion built for players who want more than blind luck. Instead of just showing what a ticket looked like on launch day, Savvy Scratch helps you see what matters now: which games have gone bad, which ones are still fresh, and where the best remaining...

Read more about Savvy Scratch

No description of useEffect.dev yet.

Features and specs

What each product offers, as listed by its team.

Savvy Scratch 2 features
useEffect.dev 5 features
  • Lotto scratcher ticket evaluator
    Pro gambler 20+ years mathematical card counting system for lotto scratchers.
  • MCP
    Talk to your ai bot about lottery ticket data and not have it make things up or hallucinate.
  • React-focused learning resource
    useEffect.dev is a specialized resource dedicated to helping developers understand and master React's useEffect hook, one of the most commonly used but often misunderstood hooks in the React ecosystem.
  • Practical examples
    The site provides practical, real-world examples of useEffect usage patterns, making it easier for developers to learn how to properly implement side effects in their React components.
  • Niche expertise
    By focusing specifically on useEffect, the resource can go deep into edge cases, best practices, and common pitfalls that more general React tutorials might gloss over.
  • Accessible for beginners
    The site is designed to be approachable for developers who are new to React hooks, providing clear explanations that help bridge the gap between class component lifecycle methods and the hooks paradigm.
  • Free online resource
    As a web-based resource, it is freely accessible to anyone with an internet connection, lowering the barrier to learning about React's useEffect hook.

Possible disadvantages

  • Narrow scope
    The site is extremely focused on a single React hook, which limits its usefulness as a comprehensive learning resource for React development as a whole.
  • Limited community and recognition
    useEffect.dev is not a widely known or heavily trafficked resource compared to the official React documentation or popular platforms like freeCodeCamp or Egghead, which may mean less community support and fewer peer-reviewed contributions.
  • Potential for outdated content
    As React evolves rapidly (e.g., the shift toward React Server Components and away from useEffect in some patterns), the content may become outdated if not regularly maintained and updated.
  • May not cover advanced patterns sufficiently
    While useful for understanding useEffect basics, the resource may not fully cover more advanced state management patterns or alternatives like useQuery, useSWR, or other libraries that abstract away direct useEffect usage.
  • Lack of interactive features
    Compared to platforms with interactive coding environments, sandboxes, or exercises, the site may offer a more passive learning experience that doesn't fully engage developers in hands-on practice.

Analysis

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

Savvy Scratch
useEffect.dev

Overall verdict

  • Savvy Scratch appears to be a solid educational resource focused on teaching kids and beginners how to code using Scratch, offering an approachable and engaging way to learn programming fundamentals.

Why this product is good

  • Focuses on Scratch, a beginner-friendly visual programming language ideal for young learners
  • Provides structured lessons and tutorials that build foundational coding skills
  • Encourages creativity through interactive projects like games and animations
  • Accessible for those with no prior programming experience

Recommended for

  • Children and teens beginning their coding journey
  • Parents looking for educational programming resources for their kids
  • Teachers and educators seeking classroom-friendly coding material
  • Beginners of any age who want an easy introduction to programming concepts

Overall verdict

  • useEffect.dev appears to be a niche educational resource focused on React's useEffect hook and related hooks concepts, useful for developers who want targeted explanations and examples rather than a full-scale course platform.

Why this product is good

  • Focuses specifically on a commonly confusing React concept, which can save time compared to searching broader documentation
  • Likely provides practical code examples that clarify real-world usage patterns
  • Can serve as a quick reference for debugging common useEffect pitfalls like dependency arrays and cleanup functions
  • Being narrowly scoped, it may be easier to digest than lengthy general React courses

Recommended for

  • Junior to mid-level React developers seeking clarity on useEffect specifically
  • Developers debugging issues related to effect dependencies or infinite render loops
  • Self-taught programmers who prefer concise, topic-specific resources over full courses
  • Teams looking for a quick reference link to share with newer developers on the team

Videos

Walkthroughs and reviews on video.

Savvy Scratch 1 video + Add
useEffect.dev 0 videos + Add

Why you want to scratch savvy!

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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
Savvy Scratch
useEffect.dev
100% 100%
SaaS
0% 0%
0% 0%
React
100% 100%
100% 100%
Consumer Insights
0% 0%
0% 0%
JavaScript
100% 100%

Questions & Answers

As answered by people managing Savvy Scratch and useEffect.dev.

What makes your product unique?

Savvy Scratch's answer

Savvy Scratch treats scratchers like a changing market, not a static product, and gives everyday players a way to act with more logic and less guesswork. Built by a long term pro gambler so you know you can trust the math.

Why should a person choose your product over its competitors?

Savvy Scratch's answer

Savvy Scratch is the only scratch-off lottery analysis app built by someone who has made a living beating games of chance. 20+ years of poker, blackjack card counting, and casino advantage play, applied to the one lottery product that actually behaves like a counted deck. Real-time prize-remaining data across 19 states, every active game rated Good, Neutral, Bad, or New so you know which tickets still have jackpots available and which ones are dead money. Free tier shows Bad and New games. Full access $5/month or $50/year, 30-day worry-free guarantee.

How would you describe the primary audience of your product?

Savvy Scratch's answer

Recreational scratch-off players who spend $20–$200+ a month on tickets and are tired of buying blind. They already play, they're not looking to be sold on the lottery, and they don't trust systems or lucky number gimmicks. What they want is the same thing a card counter or a serious poker player wants: to know which games are live, which are dead, and where to put their money. Skews toward adults 30–65 who appreciate data over hype and would rather skip a dying game than keep feeding it.

What's the story behind your product?

Savvy Scratch's answer

I spent 20+ years making a living at games of chance. Poker, blackjack card counting, a handful of casino advantage plays. Over $500K in lifetime winnings, none of it from luck. Somewhere along the way I noticed that scratch-off lottery tickets are structurally the closest thing the gambling world has to a counted blackjack shoe. Fixed print run, fixed prize pool, and as prizes get claimed the remaining tickets drift away from what the back of the pack advertises. Every state lottery publishes the data to figure this out. Almost nobody reads it, and the tools that existed were built by developers who had never placed a real bet. I built Savvy Scratch to apply the same advantage-play framework I used at casino tables to a game millions of people already play, so they can stop funding dead games and start putting their money where the edge actually sits.

Which are the primary technologies used for building your product?

Savvy Scratch's answer

Next.js 15 (App Router) on the web, React Native with Expo for the iOS and Android apps, Supabase for the database and auth, Stripe for subscriptions, Vercel for hosting, Sanity for content, and RevenueCat for mobile subscription management.

Who are some of the biggest customers of your product?

Savvy Scratch's answer

Savvy Scratch is a consumer subscription product, not a B2B tool, so customers are individual scratch-off players rather than companies. The user base spans all 19 covered states, with the largest concentrations in Texas, California, Florida, and New York where scratch-off play is highest.

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