Comparison

高校2年生で覚える英単語500 vs IRAKU

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

Head to head
About

高校2年生で覚える英単語500

This app helps high school sophomores learn 500 English vocabulary words. It features multiple-choice questions and pronunciation for listening practice across 28 categories. Earn gold medals by achieving perfect scores.

Highlights
  • 500 high school sophomore English words
  • Pronunciation feature for listening
  • 28 vocabulary categories
  • Multiple-choice questions
  • Gold medal achievement system
  • Short study sessions
Features
Read full description

【収録英単語数500】 高校2年生で学ぶ英単語が500単語収録されているアプリです。 ・各問題で発音する機能を搭載しているのでリスニング能力も鍛えることができます。 【カテゴリ】 以下の28カテゴリの英単語を収録しています。 ・動詞① ・動詞② ・動詞③ ・動詞④ ・動詞⑤ ・動詞⑥ ・動詞⑦ ・動詞⑧ ・名詞① ・名詞② ・名詞③ ・名詞④ ・名詞⑤ ・名詞⑥ ・名詞⑦ ・名詞⑧ ・名詞⑨ ・名詞⑩ ・形容詞① ・形容詞② ・形容詞③ ・形容詞④ ・形容詞⑤ ・形容詞⑥ ・形容詞⑦ ・副詞① ・副詞② ・前置詞,接続詞 問題を解き進めて、各カテゴリで満点を取ることで、金メダルを獲得しましょう。 4択問題なので短時間で勉強できます。 エラーや間違い等ありましたらレビューにてご意見を頂けますと幸いです。

About

IRAKU

Features
Read full description

IRAKU is an educational app that lets you learn genetics, DNA and evolution through moving simulations. Every mode unfolds in 4 steps and ends with a real example from research or observation. Every part of each picture is labeled, so you can connect the formulas with what you see. Developer: Fuji Bit Inc. IRAKU is the genetics edition of the "-raku" series of educational apps. It turns genetics from high school biology to introductory university courses into moving pictures, not just formulas and terms. 11 simulations in 4 categories: - DNA and gene expression - DNA Double Helix: Watch nucleotides gather, form A=T (2 hydrogen bonds) and G≡C (3 hydrogen bonds) base pairs, and wind as two antiparallel strands into a right-handed helix in 3D. Spin the finished helix with your finger. Human DNA has about 3 billion base pairs; stretched out, the DNA in one cell is about 2 m long. - Central Dogma: Using the human insulin gene, follow transcription initiation, mRNA synthesis, splicing and export from the nucleus, and translation on the ribosome. - Codon Translation: Read mRNA three bases at a time from the start codon AUG to a stop codon, with tRNAs bringing amino acids and a codon table highlighting each codon. Switch to examples of a synonymous substitution and a nonsense mutation. - How inheritance works - Mendel's Crosses: Cross round and wrinkled peas through F1 and F2. Check the 3:1 ratio (9:3:3:1 with two genes) in a Punnett square and compare it with Mendel's own counts of 5474 : 1850. - Meiosis & Crossing Over (new): Follow DNA replication, pairing of homologous chromosomes and crossing over, then meiosis I and II until four gametes form. Tell parental and recombinant gametes apart, and turn crossing over on or off. - Karyotype: Stain 46 chromosomes with G-banding and arrange them by size and centromere position into pairs 1-22 and the sex chromosomes to complete the karyotype 46,XX or 46,XY. - Populations and evolution - Mutation & Evolution: Using industrial melanism in the peppered moth, see mutation, environmental change and natural selection spread the dark form generation by generation. - Hardy-Weinberg Equilibrium: See allele frequencies p and q give genotypes p², 2pq and q², and stay the same generation after generation. Change p with a slider. - Phylogenetic Tree: Build a tree with the UPGMA method from DNA differences between humans, chimpanzees, gorillas, orangutans and gibbons. - Biotechnology - PCR Amplification (new): Watch DNA double in three steps - denaturation (95 °C), annealing (about 58 °C) and extension (72 °C) - and grow about a billion-fold in 30 cycles, with a temperature graph. - CRISPR: See a guide RNA and Cas9 find a PAM sequence (NGG), cut both strands, and the break being repaired by NHEJ (deletions and insertions) or HDR (rewriting). Switch between the two repair pathways. Features: - Clean, modern design with dark and light themes - Home screen organized by category - Every mode advances in 4 steps and ends with a real example (step back and forth with ◀ ▶ and change the speed) - Labels on every part of each picture - An explanation sheet with formulas for every simulation - In landscape, the canvas and controls sit side by side - Supports larger text sizes - Available in 73 languages, including English and Japanese (follows your device language) - No sign-in; start exploring right away Price and purchases: - Price: Free - In-app purchases: None - Subscriptions: None - Ads: Banner ads by Pangle at the bottom of the screen The "-raku" series of educational apps (selection): - SUUGAKU - Mathematics - BUTURAKU - Mechanics - DENRAKU - Electromagnetism - HARAKU - Waves - CHIRAKU - Earth Science - IRAKU - Genetics

Screenshots

高校2年生で覚える英単語5004 screens
IRAKU4 screens

Verdict

The call

The clearest difference is update cadence: IRAKU at every 5 months against 高校2年生で覚える英単語500's every 11 months. 高校2年生で覚える英単語500's advantage is iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

高校2年生で覚える英単語500 ships an update every 11 months, IRAKU every 5 months. The most recent releases landed on October 8, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
高校2年生で覚える英単語500 versus IRAKU: the parameters behind the verdict, then further details
Parameter高校2年生で覚える英単語500IRAKU
PriceFreeFree
Rating4.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 11 monthsEvery 5 months — better
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.0
Further details — not scored
Size15 MB30 MB
Age rating4+4+
DeveloperJunpei ShimotsuFuji Bit Inc.

In-app purchases

None

高校2年生で覚える英単語500

No in-app purchases

None

IRAKU

No in-app purchases

Questions

Is 高校2年生で覚える英単語500 free?
高校2年生で覚える英単語500 is free to download, with no in-app purchases.
Is IRAKU free?
IRAKU is free to download, with no in-app purchases.
Do 高校2年生で覚える英単語500 or IRAKU have ads?
Both 高校2年生で覚える英単語500 and IRAKU show ads.
Which is updated more often, 高校2年生で覚える英単語500 or IRAKU?
高校2年生で覚える英単語500 ships an update every 11 months, and IRAKU every 5 months. Most recently, 高校2年生で覚える英単語500 was updated on October 8, 2026 and IRAKU on October 24, 2026.

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