Comparison

Boolean Builder by ChatStick vs Learn Czech

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

Head to head
About

Boolean Builder by ChatStick

Features
Read full description

Boolean Builder helps you understand digital logic through hands-on learning. Whether you're a student, a beginner in electronics, or preparing for computer engineering topics, this app makes Boolean logic visual, practical, and easy to remember. ### What you can do - Learn core concepts from binary basics to Boolean identities and De Morgan's Laws - Explore gate behavior with live input/output simulation - Generate and inspect truth tables instantly - Build your own circuits by connecting logic gates on a visual canvas - Test your knowledge with quizzes and timed logic challenges - Track your progress with completion stats, XP, streaks, and achievements ### Core topics covered - AND, OR, NOT, XOR - NAND, NOR, XNOR, BUFFER - Boolean expressions - Truth tables (2-input and advanced 3-input mode) - Circuit composition and logic flow ### Great for - High school and university students - Self-learners in coding, electronics, and computer science - Teachers who want a visual companion for logic lessons ### Premium A one-time Premium upgrade unlocks advanced lessons, advanced quizzes/challenges, and premium gates. ### Free experience The free version includes substantial learning content and core tools. Ads may be shown in free mode. Build real intuition for Boolean logic - one gate at a time.

About

Learn Czech

Features
Read full description

Learn Czech faster with real content, AI pronunciation coaching, and live voice practice. LingFast is a next-generation language learning app that replaces boring textbooks with authentic Czech audio, video, and dialog content - then gives you powerful tools to practice speaking, build vocabulary, and track your progress. * IMMERSIVE CONTENT FEED * Swipe through real-life Czech lessons in a TikTok-style feed: - Native Czech dialogs and two-speaker conversations - Short news articles and stories - Videos and imported YouTube lessons - Filter by type: Dialog, Video, Talk, News, Story * AI SHADOWING AND PRONUNCIATION * Powered by on-device Whisper AI - works offline, results in seconds. - Shadow sentence by sentence: listen, record and get your score (0-100%) - Accuracy, fluency and completeness breakdown - Vocabulary pronunciation drill with instant AI grading - See which words and sounds need improvement * TALK NOW - LIVE VOICE PRACTICE * Match instantly with real Czech learners worldwide for anonymous voice calls. Build speaking confidence through real conversations, not scripted exercises. * AI CONVERSATION PARTNER * Chat with an AI tutor in Czech anytime. Choose your topic and difficulty, have a real two-way conversation, and get feedback on every response. * VOCABULARY SYSTEM (SPACED REPETITION) * Save Czech words directly from lessons. Our SRS algorithm schedules reviews at the perfect moment so words stay with you for life. 4 practice modes: - Flashcard self-assessment - Multiple-choice game (timer, 3 lives, streaks) - Typing challenge (typo-tolerant scoring) - Pronunciation drill with AI scoring * LEARNING TOOLS IN EVERY LESSON * - Full transcript: tap any word for instant definition - Shadowing: sentence-by-sentence pronunciation practice - Role Play: take a character's part in the dialog - Dictation: listen and type what you hear - Comprehension Quiz: multiple choice questions - True/False Quiz: rapid understanding check - Grammar and Knowledge: in-context explanations * GAMIFICATION * - Daily XP goals and streak tracker - Global leaderboard - Vocabulary Duel, Sentence Scramble and Shadowing Duel multiplayer games - Study history and progress tracking * COMMUNITY * - Post questions, get answers from native Czech speakers - React and comment on posts - Bookmark lessons and discussions * YOUTUBE IMPORT * Paste any Czech YouTube link -> instant lesson with transcript, shadowing, dictation, and vocabulary tools. PREMIUM PLAN: - Ad-free experience - Unlimited AI voice chat sessions - Unlimited word translation and lookup - Unlimited saves and YouTube imports Dark and Light mode. Offline AI speech model. Download LingFast and start speaking Czech confidently from Day 1. Terms of Use (EULA): https://lingfast-server.tnpixel.com/legal/lingfast/terms-of-service

Screenshots

Boolean Builder by ChatStick4 screens
Learn Czech4 screens

Verdict

The call

The clearest difference is ads: Learn Czech at none against Boolean Builder by ChatStick's shown. Learn Czech also leads on iOS requirement (16.0 vs 26.2). On price, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Boolean Builder by ChatStick sells 1 one-off in-app purchase and Learn Czech sells 6 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences ยท 4 level
Boolean Builder by ChatStick versus Learn Czech: the parameters behind the verdict, then further details
ParameterBoolean Builder by ChatStickLearn Czech
PriceFreeFree
Update frequencyโ€”Every 3 months
AdsYesNo โ€” better
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.216.0 โ€” better
Further details โ€” not scored
Size11 MB104 MB
Age rating4+4+
DeveloperChatStick Company LimitedDinh Thang Tran

In-app purchases

1 purchases

Boolean Builder by ChatStick

One-time1
  • Boolean Builder Premium$1.99
6 purchases

Learn Czech

Subscriptions5
  • LingFast Premium Weekly$3.997 Days
  • LingFast Premium Monthly$8.991 Month
  • LingFast Premium 3 Months$19.993 Months
Show 2 more
  • LingFast Premium 6 Months$32.996 Months
  • LingFast Premium Yearly$49.991 Year
One-time1
  • LingFast Premium Lifetime$249.99

Questions

Is Boolean Builder by ChatStick free?
Boolean Builder by ChatStick is free to download, with in-app purchases available.
Is Learn Czech free?
Learn Czech is free to download, with in-app purchases available.
Do Boolean Builder by ChatStick or Learn Czech have ads?
Boolean Builder by ChatStick shows ads; Learn Czech does not.

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