Calculation Practice vs HayaiLearn
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculation Practice
Master fundamental math skills with this interactive flashcard app. Choose the correct answer from multiple choices for randomly generated calculations. Track your progress with accuracy and time metrics after each session.
- Randomized calculation problems
- Multiple-choice answers
- Auditory feedback for correct answers
- Progress tracking (correct answers, time)
- Daily practice reinforcement
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A "calculation card" is a study application for mastering fundamental calculation. You choose the answer regarded as right as the numerical calculation displayed at random from three candidates. We announce you a correct answer to sound. After all the lessons finish, the number of correct answers and time are displayed. The skill of calculation could be made to raise by repeating every day.
HayaiLearn
Learn Japanese through interactive video lessons, featuring tappable subtitles, AI conversation practice, and personalized vocabulary review. Build listening, reading, and speaking skills from beginner to advanced levels using content you enjoy.
- Interactive video lessons
- Tappable subtitles with translations
- AI conversation practice
- Contextual grammar explanations
- Spaced repetition vocabulary review
- Pronunciation grading
- Personalized content feed
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Learn Japanese with videos you love and start speaking from day one, even if you’re a complete beginner. HayaiLearn turns Japanese videos (Youtube or Local videos) into interactive lessons with tappable subtitles, contextual translations, grammar explanations, vocabulary review, and AI conversation practice. Build your listening and reading skills, then use what you learn out loud. SPEAK JAPANESE, EVEN FROM ZERO Don’t know how to say it yet? Use Translate assist to say what you mean in English and see how to say it in Japanese. Practice conversations with an AI partner using words and grammar you’re learning. • Get English-to-Japanese help when you’re stuck. • Tap Explain to understand the AI’s replies. • Tap words in the conversation and mark them as learning or known. • Practice roleplay conversations and get feedback on your answers. LEARN FROM VIDEOS YOU ENJOY Explore 20,000+ Japanese videos or bring a YouTube video you want to study. From everyday conversations to content about your interests, make Japanese immersion part of your routine. • Find videos graded from 1–10 by difficulty. • Discover a personalized feed matched to your comprehension. • Follow interactive subtitles and replay the lines you want to hear again. UNDERSTAND WORDS AND GRAMMAR IN CONTEXT Tap a Japanese word to see the meaning that fits the sentence. Get AI explanations of grammar, sentence patterns, slang, and casual speech without losing the context of the video. • Learn vocabulary from real sentences. • Break down unfamiliar Japanese with one-tap explanations. • Save useful sentences to revisit later. SHADOW VIDEOS AND GET A GRADE Listen to a line, repeat it out loud, and get a pronunciation grade. Practice shadowing with the videos you study, replay the original, and try again to improve your delivery. STUDY THE WORDS THAT MATTER TO YOU Prioritize vocabulary by how often it appears in the content you like. Build comprehension around your interests, with JLPT N5–N1 filters to help focus your study. REMEMBER MORE WITH SPACED REPETITION Turn the words you encounter into regular reading and listening practice. Review vocabulary in context with flashcards, multiple-choice questions, and video listening quizzes. • Watch and replay real clips as you review. • Practice recognizing words by sound as well as by sight. • Use spaced repetition to revisit what you’re learning. SEE YOUR JAPANESE GROW Earn XP across reading, listening, writing, and speaking. Build a daily streak and track words as they move from learning to known. Watch something you enjoy. Understand a little more. Put it into words. Make Japanese a habit you want to keep. A paid subscription is required to access content and features. Cancel anytime. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.hayailearn.com/company/privacy-policy
Screenshots
Verdict
The clearest difference is review sentiment: HayaiLearn at 60% against Calculation Practice's 0%. HayaiLearn also leads on price (Free vs $0.99) and update cadence (every 8 days vs every 17 months). Calculation Practice's advantage is in-app purchases (none vs 9). On ads 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
HayaiLearn is free to download; Calculation Practice costs $0.99 up front. HayaiLearn sells 9 in-app purchases, starting at $12.99 per month. Calculation Practice asks for nothing beyond the download.
Calculation Practice ships an update every 17 months, HayaiLearn every 8 days. The most recent releases landed on November 1, 2026 and November 14, 2026 respectively.
| Parameter | Calculation Practice | HayaiLearn |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 4.5 (41 ratings) — better |
| Positive reviews | 0.0% of reviews | 60.0% of reviews — better |
| Number of ratings | — | 41 — better |
| Update frequency | Every 17 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid — better | Subscription |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.2 | 16.4 — better |
| Further details — not scored | ||
| Size | 2 MB | 127 MB |
| Age rating | 4+ | 12+ |
| Developer | Hideomi Sato | Fallen Cloud Studios LLC |
Customer experience
Calculation Practice
HayaiLearn
In-app purchases
Calculation Practice
No in-app purchases
HayaiLearn
- Pro$12.991 Month
- Pro Access7 Days trial$12.991 Month
- Platinum$24.991 Month
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- Pro Access$69.991 Year
- Pro Access7 Days trial$69.991 Year
- Pro Access7 Days trial$99.991 Year
- Platinum Access$129.991 Year
- Platinum7 Days trial$129.991 Year
- Platinum7 Days trial$184.991 Year
Questions
Is Calculation Practice free?
Is HayaiLearn free?
Do Calculation Practice or HayaiLearn have ads?
Which is updated more often, Calculation Practice or HayaiLearn?
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