# IRAKU — Genetics — See DNA, genes and evolution

> See DNA, genes and evolution (iPhone/iPad app by Fuji Bit Inc..)

- Source: https://appshunter.io/ios/app/iraku-genetics/id6768634144 (this page in markdown: same URL + `.md`)
- Developer: [Fuji Bit Inc.](https://appshunter.io/developer/1874205957)
- Category: Education, Entertainment
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 30 MB
- Languages: American English, Afrikaans, Albanian, Amharic, Arabic, Armenian, Azerbaijani, Basque, Belarusian, Bangla and 62 more
- Released: 2026-05-12
- Data updated: 2026-10-24

## What is IRAKU?

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

## Is IRAKU safe?

Not enough ratings yet to assess IRAKU.

## Is IRAKU legit?

IRAKU — Genetics appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for IRAKU is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 2.0 — 2026-10-22

- All-new design: a home screen by category, every mode unfolds in 4 steps to a real example, and every part of each picture is labeled
- New modes: PCR Amplification and Meiosis & Crossing Over (11 in total)
- Spin the DNA double helix with your finger
- Now in 73 languages, including English and Japanese
- Canvas and controls side by side in landscape; supports larger text
- Ads are now served by Pangle; added Ad settings in About
- Requires iOS 15.0 or later

### 1.0 — 2026-05-12

No release notes.

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## More apps by Fuji Bit Inc.

- [SUUGAKU](https://appshunter.io/ios/app/suugaku/id6759102221)
- [BUTURAKU](https://appshunter.io/ios/app/buturaku/id6759213255)
- [PAKEDOU](https://appshunter.io/ios/app/pakedou/id6759820254)
- [OKURERUNA！](https://appshunter.io/ios/app/okureruna/id6759956971)
- [HARAKU - Wave Physics](https://appshunter.io/ios/app/haraku-wave-physics/id6759958253)
- [KORAKU](https://appshunter.io/ios/app/koraku/id6760215571)

All apps by Fuji Bit Inc.: https://appshunter.io/developer/1874205957

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*