Comparison

Text Alchemy vs Human Factor

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

Head to head
About

Text Alchemy

Features
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Tired of memorizing vocabulary and sentences from textbooks? Learn languages with content you actually love. "Text Alchemy" transforms what truly interests you—lyrics, dialogues, tweets, articles—into your personalized learning materials. From now on, the entire internet and world become your textbook. Three Unique Features: Scientific Memory System — Visible Memory Growth Every word has "memory freshness" and "memory shelf life," just like food freshness. Gold represents fresh memory, green indicates review needed—grasp your learning state at a glance. The system uses the FSRS (Free Spaced Repetition Scheduling) algorithm to precisely remind you to review when memory freshness drops to 60%—review at the optimal moment with minimal effort for maximum effect. Each successful review extends the shelf life from days to weeks to months, allowing you to see the transformation from short-term to long-term memory. Sentence-by-Sentence Deep Analysis — More Than Translation, Understanding Nuance AI explains the tone, emotion, and usage context of each sentence, automatically breaking down complex long sentences into simple structures. Understand contextual relationships and cultural nuances all at once. Word Comparison — Master Similar Word Differences What's the difference between "頑張る" and "努力する"? Enter similar words, and AI deeply analyzes usage scenarios, nuance differences, and common collocations, showing you when to use which word. What You'll Get: Memorable Vocabulary — From content you love, with scientific spaced repetition Truly Understood Sentences — Tone, structure, cultural context fully analyzed Usable Language Sense — Learn real-world expressions Visible Progress — Visual tracking of memory shelf life extension Stop being limited to Lesson 1, Lesson 2. Learn with content you love—remember fast, retain long, use naturally. Download "Text Alchemy" and make learning something you look forward to. Privacy Policy: https://lessismore521.blogspot.com/2025/12/privacy-policy-for-text-alchemy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Human Factor

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殺人事件を解くように、英文法を身につける。 Human Factorは、殺人ミステリーのストーリーを聴きながら英語の文法を学ぶ、新しいタイプの英語学習アプリです。 全13エピソードの犯罪ドラマを通じて、名詞・形容詞から仮定法まで、英文法の基礎を体系的に学べます。各エピソードには物語トラックと文法ガイドトラックの2つが収録されています。 ▼ ストーリー 若い女性の不審死。刑事ワトソンが捜査を進めるにつれ、被害者の恋人、新聞記者、編集長、そしてマフィアの影が浮かび上がる。事件の真相は、あなたの文法力で解き明かされます。 ▼ 特徴 ・全13エピソード × 2トラック(ストーリー+文法ガイド) ・日本語と英語のバイリンガル構成 ・オリジナルの音声ドラマ ・歌詞表示付きのオーディオプレーヤー ・Play All機能で全エピソードを連続再生 ▼ 学べる文法項目 Episode 1: 名詞と形容詞 Episode 2: 疑問詞 Episode 3: 時制 Episode 4: 場所を表す表現 Episode 5: 方法や手段を表す表現 Episode 6: 人物を表す表現 Episode 7: 動作と進行形 Episode 8: 理由を表す表現 Episode 9: 推測と可能性 Episode 10: 命令形 Episode 11: 受動態と間接話法 Episode 12: 推測の表現 Episode 13: 仮定法と助動詞 犯罪ドラマの緊張感の中で、自然に英文法が身につきます。

Screenshots

Text Alchemy4 screens

Verdict

The call

The clearest difference is in-app purchases: Human Factor at none against Text Alchemy's 4. Text Alchemy's advantage is device support and iOS requirement (12.0 vs 26.2). On price 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. Text Alchemy sells 4 in-app purchases, starting at $5.99 per month. Human Factor asks for nothing beyond the download.

Scorecard3 real differences · 3 level
Text Alchemy versus Human Factor: the parameters behind the verdict, then further details
ParameterText AlchemyHuman Factor
PriceFreeFree
Update frequencyFortnightly—
AdsYes—
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPod — better—
Requires iOS12.0 — better26.2
Further details — not scored
Size74 MB1.9 GB
Age rating4+17+
DeveloperChun Yu KamMasahiko Hattori

In-app purchases

4 purchases

Text Alchemy

Subscriptions4
  • Premium$5.991 Month
  • Premium+ Monthly$11.991 Month
  • Premium yearly$59.991 Year
Show 1 more
  • Premium+ Yearly$119.991 Year
None

Human Factor

No in-app purchases

Questions

Is Text Alchemy free?
Text Alchemy is free to download, with in-app purchases available.
Is Human Factor free?
Human Factor is free to download, with no in-app purchases.

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