# Gokaku: Japan Driving Test — Gaimen, karimen, honmen theory > Gaimen, karimen, honmen theory (iPhone/iPad app by Ilia Snezhkov.) - Source: https://appshunter.io/ios/app/gokaku-japan-driving-test/id6799978043 (this page in markdown: same URL + `.md`) - Developer: [Ilia Snezhkov](https://appshunter.io/developer/1896007193) - Category: Education, Reference - Price: Free - Age rating: 4+ - Requires: iOS 15.0 · 30 MB - Languages: American English - Released: 2026-08-25 - Data updated: 2026-10-09 ## What is Gokaku? Since 1 October 2025, the written test for converting a foreign licence (外免切替) has been 50 questions with a 90% pass bar. Gokaku is built to get you through it — and through 仮免許 and 本免許 as well. It runs entirely offline, needs no account, and shows you the rule behind every answer. FREE, WITH NOTHING LOCKED Every question, every mock exam, every language, from the first launch. No ads, no subscription, no starter set that runs out. 12 LANGUAGES — INCLUDING THE QUESTIONS English, Japanese, Chinese, Vietnamese, Portuguese, Korean, Spanish, Filipino, Nepali, Indonesian, Burmese and Russian. Not just the menus: every statement, every explanation and every quoted rule is translated. Japanese terms can stay inline beside the translation, so the words you will meet on the real paper stay familiar. 935 TRUE/FALSE STATEMENTS, EVERY ONE SOURCED Each question is a ○/× statement in the style of the real paper. Answer it and you get the passage it comes from, quoted verbatim from 交通の教則 — the National Police Agency's official rulebook, 49th revision (13 Nov 2024) — or from the law itself where a rule has changed since, plus a plain-language explanation of the trap. Tap the Japanese original to copy it. THREE REAL EXAM FORMATS, TIMED • 外免切替 — 50 questions, 30 minutes, pass 45/50 • 仮免許 — 50 questions, 30 minutes, pass 45/50 • 本免許 — 90 questions, 50 minutes, pass 81/90 A question palette to jump around, a countdown that keeps you honest, and a full review of every miss when you submit. ROAD SIGNS THE WAY THE EXAM SHOWS THEM Browse all 208 official signs in one consistent style, grouped the way Japan groups them — regulatory, auxiliary plates, warning, indication, guide — and search by name or by sign number. Flashcards turn any selection into a deck: sign shown, name hidden, tap to reveal. 144 questions put the sign on screen as an image instead of describing it in words, which is what the real test does and what most study apps skip. STUDY THAT KNOWS WHAT YOU DON'T • Batches of 5, 10, 25 or 50 questions, new material first • Every miss goes into a review queue and stays until it sticks • Save any question you want back — the manual counterpart to that queue, for the ones you got right and still didn't understand • A readiness read-out on the home screen: where you stand for the exam you are taking, and the one thing holding it back • Mastery is tracked per statement: right first try, or twice in a row after a miss • Progress by topic — 13 of them — and by kind of trap: "what tricks you" • Move your progress to another device with a single file PRIVACY No account, no ads, no analytics, no network calls. Nothing leaves your device, because there is nothing collected to leave with. Unofficial study aid, not affiliated with the National Police Agency or any prefectural police. For official information see the NPA Traffic Bureau: https://www.npa.go.jp/english/bureau/traffic/index.html — and always confirm current rules with your prefectural licence centre. Since 1 October 2025, the written test for converting a foreign licence (外免切替) has been 50 questions with a 90% pass bar. Gokaku is built to get you through it — and through 仮免許 and 本免許 as well. It runs entirely offline, needs no account, and shows you the rule behind every answer. ## Is Gokaku safe? Not enough ratings yet to assess Gokaku. ## Is Gokaku legit? Gokaku: Japan Driving Test has limited verification signals. The AppsHunter Legitimacy Score for Gokaku is 58 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 3 releases) ### 1.0.2 — 2026-09-15 From 1 September 2026 the statutory speed limit changes on most Japanese streets: where a road has no centre line, no lane markings and no divider between the two directions, the unposted maximum for a car is 30 km/h instead of 60. Five questions were rewritten against the amended Cabinet Order and three new ones cover the change itself — 935 in all, each with its rule quoted and translated into all 12 languages. The App Store page is now also available in Chinese, Vietnamese, Portuguese, Korean, Spanish, Indonesian and Russian. ### 1.0.1 — 2026-08-29 Signs library — browse all 208 official road signs, grouped the way Japan groups them, and search by name or by sign number. Open any sign to see the questions that use it. Flashcards — turn whatever the library is showing into a deck: sign up, name hidden, tap to reveal, mark it known or not. Saved questions — put aside any question you got right and still didn't understand, then study the shelf in one go. It is the manual counterpart to the mistakes queue. Readiness on the home screen — where you stand for the exam you are taking, the one thing holding it back, and a way straight to it. It is an estimate of your preparation, never a prediction of passing. 158 new questions — 932 in all, each with its rule quoted from 交通の教則 and translated into all 12 languages. Every row of the official signal table now carries both a true and a false question, and two classes the bank had been missing are in: the auxiliary plates that ride under a main sign, and the two-wheeler chapter. Fixes — ten signs that rendered black, the English sign names rewritten from scratch, and a tighter layout on small phones. The app also starts faster: it now loads the one language you use instead of all twelve. ### 1.0 — 2026-08-25 No release notes. ## Apps similar to Gokaku | App | Rating | Price | Category | | --- | --- | --- | --- | | [Japan Driver Master: Prep 2026](https://appshunter.io/ios/app/japan-driver-master-prep-2026/id6761185286) | — | Free | Education | | [Gaimen: Japan License Test](https://appshunter.io/ios/app/gaimen-japan-license-test/id6777671311) | 5.0 (2) | Free | Education | | [Japan Driving Test: Menkyo](https://appshunter.io/ios/app/japan-driving-test-menkyo/id6778449142) | — | Free | Education | | [Gaimen Drill: Japan License](https://appshunter.io/ios/app/gaimen-drill-japan-license/id6803589111) | — | Free | Education | | [日本免许速通](https://appshunter.io/ios/app/id6779490162) | — | Free | Education | | [Japan Drive Prep](https://appshunter.io/ios/app/japan-drive-prep/id6761668559) | — | Free | Education | --- *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 2026-10-09.*