From Learning Japanese Wiki (RtKWiki)
The iPhone OS has built-in keyboards for Japanese, Romaji and Ten Key. There is also the Chinese - Traditional Handwriting keyboard that can be of limited use to input Kanji. These IMEs can be activated from the Settings -> General -> Keyboard tab.
- See also Comparison of iPhone Edict software
- Imiwa? - free - (Formerly Kotoba!) Japanese to English (and others). Conjugates verbs and adjectives. Ability to save words to bookmarks. Contains example sentences from the Kotoba! project. Ability to search for Kanji by pronunciation, SKIP code, radicals, JLPT levels. Includes stroke order display of Kanji.
- WordWeb - free - An English to English only dictionary, but an excellent one. Useful for defining the sometimes complicated RTK keywords in greater detail.
- Japanese - cost - Breaks down sentences partially. Can do conjugated words. Marking, stroke order, so on. Very handy. One useful feature of Japanese is that you can cut and paste an entire list into an email. Everything you look up can be cut and paste into Anki. It's like Rikaichan on the go.
- Wisdom - cost - E-J, J-E. Medium-size dictionary.
- Daijisen - cost - J-J
- 大辞林 Daijirin - cost - J-J
- Jishop - cost - Kanji. Similar approach to Halpern's dictionaries (but more kanji & less examples). Has had several updates and is now much better than when first released.
- Midori (Japanese Dictionary) - cost - Allows you to look up words by typing/radicals/handwriting, plus there's an option for parsing a pasted text. You can bookmark studied words, assign them to different lists and later on email to your account.
- EBPocket Free / EBPocket Professional - free/cost- EPWING dictionary reader
- AnkiMobile Flashcards - $24.99 - iPhone version of Anki. Syncs with the desktop/online version. Most basic functionality is included from the desktop version.
- KanaSwirl - $2.99 - a game to learn or review the kana with stats and pronunciations
- KanjiSwirl - $2.99 - a game to learn or review kanji with stats, like KanaSwirl
- Wakaru - "Wakaru is a web browser and Ebook reader with built-in multi-language dictionaries"
- iBunkoS - cost - An ebook reader for Aozora Bunko-formatted text files.
- Radio Japan - cost - Japan Radio Web Links (Safari shortcut) for Internet radio listening.
- Hot Radio Japan - free - web links to Radio in Japan.
- SHOUTcast - free - radio.
- Remembering the Kanji - "Remembering the Kanji" (Official flashcard and review app for the Heisig method) is a kanji learning App to complement the bestselling kanji books “Remembering the Kanji” (Volumes I & II), by Dr. James W. Heisig.
- StickyStudy - cost - Slick interface, huge sentence database, stroke orders, dropbox support and more
- Kanji - cost - Cheap, basic but effective, very easy to make your own lists
- Ultimate Japanese Phrasebook - cost - going cheap at the moment at 350円.
- Japanese Sensei - ? - Nearly 10,000 sentences. Same source as Core 2,000/ 6,000.
- 聞かせて天声人語 - free - A 天声人語 editorial reading comprehension app, with quizzes, as well as voice acting & stories featuring the game's three heroines.
- Secret of Mana (聖剣の伝説２) - ? - has recently been released in the App Store and plays in both languages. You can even switch the languages in the games option screen while playing.
- Twitter - free - (I tweet in Japanese, sometimes, lol.) - I photograph my writing and post it up using twitter (easy upload, no hassles)
- Cinch - ? -(audio upload on the go) - I post my audio to twitter then Lang8 so this is useful.
- Stanza - free - for reading PDFs
- Good Reader - ? - for reading PDFs (i.e., Manga, books)
Links to Koohii forum threads
- Reading RAW manga on the iPhone
- Update must have apps for iPhone
- Apps for iPod Touch
- How to buy J apps with no credit card
- Study kanji using the iPhone
- Japanese and American apps living in harmony
- iTouch apps - which do you use?
- Comparison between J Sensei and JapaneseLS
- Official App for "Remembering The Kanji" (iPhone, iPodTouch, iPad)