Comparison

Watki vs Learn Svelte

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

Head to head
About

Watki

This app provides offline access to detailed descriptions of all OpenGL ES commands and functions from the official Khronos Group website. It's designed to help developers easily reference graphics API information, even for beginners.

Highlights
  • Complete OpenGL ES 3.2 command descriptions
  • Information from official Khronos Group website
  • Offline access
  • Systematic function listing
  • Search bar and index
  • Landscape mode support
Features
Read full description

Watki is an offline field guide to open graphics, compute and XR standards. Every call, built-in and type, with what it does, what it takes and where it fits, set in a quiet black-and-white reader that works without a connection. WHAT'S INSIDE 21 volumes and more than 12,000 entries, including: • Vulkan 1.4 and Vulkan SC 1.0, with extensions • OpenGL ES 2.0 to 3.2, OpenGL 4.6 core and OpenGL SC 2.0 • EGL 1.5 and WebGL 1.0 and 2.0, with extensions • OpenCL 3.0 and OpenCL C, SYCL 2020 and SPIR-V 1.6 • OpenXR 1.1, OpenVX 1.3.1, OpenVG 1.1 and ANARI 1.1 • The Slang core module • glTF 2.0, KTX 2.0, COLLADA 1.5 and NNEF 1.0.5 • Short overviews of machine learning and safety-critical work HOW IT READS • Each volume opens to its sections; each section lists its entries in groups you can jump between. • Entries show the signature, parameters, return values and the version or extension that added them. • Search across every volume at once. • Keep the entries you use most and come back to recent ones. • See how much of each volume you have read. MADE TO BE LOOKED AT A slow mist drifts behind the pages and changes with the time of day. You can thicken it, slow it, freeze it or give it a new pattern. In the darkroom you can develop any photo as a 1-bit print and save it. PRIVATE AND OFFLINE Everything ships inside the app. No account, no ads, no tracking and no data collected. SOURCES The reference text is generated from the published registries, headers and reference pages of each standard, under their licences. Full credits and licence details are in the app. Watki is an independent reader and is not affiliated with or endorsed by The Khronos Group or any other standards body. Vulkan, OpenGL ES, OpenGL SC, EGL, WebGL, OpenCL, SYCL, SPIR-V, OpenXR, OpenVX, OpenVG, ANARI, glTF, KTX, COLLADA, NNEF and Khronos are trademarks or registered trademarks of The Khronos Group Inc. OpenGL is a registered trademark of Hewlett Packard Enterprise, used under licence by Khronos. Slang is a trademark of its respective owner. All other names are the property of their owners and are used only to identify the standards described.

About

Learn Svelte

Master the Svelte JavaScript framework with an AI-powered tutor and interactive coding environment. Build fast web applications with real-time feedback, code generation, and progress tracking.

Highlights
  • AI-powered step-by-step lessons
  • Live Svelte code editor with rendering
  • Smart code assistance and error detection
  • AI-generated Svelte components
  • Save and track project progress
  • Integrated learning notebook
  • Real-time coding challenges
Features
Read full description

Learn Svelte from scratch — no experience needed. Bite-sized Svelte lessons, a real code editor on your phone, and an AI mentor that answers your questions in seconds. Built for complete beginners, students and career switchers. WHY LEARN Svelte? • Svelte is an in-demand skill — a strong addition to any resume • Learn by doing: every lesson mixes short theory with hands-on practice • Build real foundations you can use in projects, work and interviews • Start from zero — every concept is explained in plain language WHAT YOU'LL LEARN • Svelte fundamentals — the core concepts, step by step • The essential building blocks used in real-world Svelte work • Practical techniques you can apply right away • Common mistakes — and how to avoid them • Hands-on exercises after every topic • Advanced topics to keep growing beyond the basics EVERYTHING YOU NEED TO LEARN Svelte • AI Mentor — stuck on a concept or an error? Ask anything and get a clear answer in seconds • 100+ bite-sized lessons (5–10 minutes each) — built for real life, not lecture halls • Real code editor — write and run Svelte code right on your phone • Quizzes and coding challenges after every topic to lock in what you learn • Weekly Code Challenge — compete with learners around the world • Certificate of completion — pass the final exam and prove your skills • Streaks, progress tracking and smart reminders to keep you consistent • Learn on the go — lessons load fast and keep working on flaky connections • App available in 22 languages WHO IT'S FOR • Complete beginners taking their first steps • Students who want extra practice alongside classes • Career switchers building job-ready skills • Anyone curious about Svelte Part of CoddyKit — a family of 40+ coding apps trusted by 100,000+ learners worldwide. Free to start: your first course is free, with a daily AI Mentor allowance. Pro unlocks every course, removes ads and gives you unlimited AI Mentor. Download Learn Svelte: Build Web Apps and write your first line of Svelte today. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.coddykit.com/terms/privacy-policy

Screenshots

Watki4 screens
Learn Svelte4 screens

Verdict

The call

The clearest difference is review sentiment: Watki at 67% against Learn Svelte's 0%. Watki also leads on rating (3.0 vs 1.0) and in-app purchases (none vs 4). Learn Svelte's advantage is update cadence (every 3 weeks vs every 134 months) and iOS requirement (15.1 vs 18.0). On price 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. Learn Svelte sells 4 in-app purchases, starting at $3.99 per 7 days. Watki asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Watki holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 67% of Watki's written reviews are positive against 0% of Learn Svelte's.

UpkeepUpdate frequency

Watki ships an update every 134 months, Learn Svelte every 3 weeks. The most recent releases landed on November 11, 2026 and November 4, 2026 respectively.

Scorecard8 real differences · 2 level
Watki versus Learn Svelte: the parameters behind the verdict, then further details
ParameterWatkiLearn Svelte
PriceFreeFree
Rating3.0 (3 ratings) — better1.0 (1 ratings)
Positive reviews66.7% of reviews — better0.0% of reviews
Number of ratings3 — better1
Update frequencyEvery 134 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.1 — better
Further details — not scored
Size7 MB67 MB
Age rating4+4+
DeveloperSaumya LaheraMEHMET CANKER (TR)

Customer experience

Watki

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Learn Svelte

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Watki

No in-app purchases

4 purchases

Learn Svelte

Subscriptions3
  • Weekly Subscription$3.997 Days
  • Monthly Subscription$4.991 Month
  • Yearly Subscription$8.901 Year
One-time1
  • Lifetime Subscription$19.90

Questions

Is Watki free?
Watki is free to download, with no in-app purchases.
Is Learn Svelte free?
Learn Svelte is free to download, with in-app purchases available.
Which has better reviews, Watki or Learn Svelte?
Watki is rated higher. Watki averages 3.0 out of 5 from 3 ratings, while Learn Svelte averages 1.0 from 1 ratings.
Do Watki or Learn Svelte have ads?
Learn Svelte shows ads; Watki does not.
Which is updated more often, Watki or Learn Svelte?
Watki ships an update every 134 months, and Learn Svelte every 3 weeks. Most recently, Watki was updated on November 11, 2026 and Learn Svelte on November 4, 2026.

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