Go to itunes.com/apps/PlecoChineseDictionary to instantly download the free version of Pleco for iPhone / iPod Touch; you can then purchase the add-ons below from inside of the app (in the “Add-ons” tab, accessible by tapping on the menu button at the bottom right corner of the screen).
The easiest / cheapest way to upgrade your copy of Pleco from the free version is to purchase a bunch of add-ons in a discounted bundle.
Basic Bundle (US $29.99) – includes all of our most popular features – full-screen handwriting, OCR, flashcards, stroke order diagrams, document reader, Mandarin Audio, and Kai font add-ons.
Professional Bundle (US $79.99) – includes the ABC Chinese-English Comprehensive, ABC English-Chinese, NWP English-Chinese, 21st Century English-Chinese, Tuttle, and Guifan dictionaries, along with every non-dictionary add-on. The ABC English-Chinese is shorter but more learner-friendly (includes Pinyin), the 21st Century dictionary is massive but doesn’t include Pinyin (though you can look up the Pinyin / definition for words in its entries by tapping on them), and Guifan is a monolingual (Chinese-Chinese) dictionary.
Each of the feature and dictionary add-ons can also be purchased individually.
Optical Character Recognizer – US $14.99
Fullscreen Handwriting Recognizer – US $9.99
Flashcard System – US $9.99
Stroke Order Diagrams – $9.99
Document Reader – US $9.99
Audio Pronunciation (male) – US $4.99
Audio Pronunciation (female) – US $4.99
Cantonese Audio (female) – US $4.99
Text-to-Speech “Hui” (female) – US $9.99
Text-to-Speech “Liang” (male) – US $9.99
Kai Chinese Font – US $4.99
Song Chinese Font – US $4.99
Xing Chinese Font – US $4.99
Seal Script Chinese Font – US $4.99
Pocket Oxford Chinese Dictionary – US $9.99.
Oxford Chinese Dictionary – US $19.99.
ABC Chinese-English Comprehensive Dictionary – US $9.99.
ABC English-Chinese Dictionary – US $9.99.
21st Century English-Chinese Dictionary – US $19.99.
NWP English-Chinese Dictionary – US $9.99.
Xiandai Hanyu Guifan Cidian – US $19.99.
Tuttle Learner’s Chinese-English Dictionary – US $14.99.
Cheng & Tsui English-Chinese Lexicon of Business Terms – US $19.99.
Gu Hanyu Da Cidian – US $19.99.
Longman Advanced Chinese Dictionary – US $19.99.
Practical Dictionary of Chinese Medicine – US $49.99.
Grand Ricci – US $49.99.
Hanyu Da Cidian – US $49.99.
Duogongneng Chengyu Cidian – US $19.99.
Guangzhouhua Fangyan Cidian – US $9.99.
KEY Chinese-English Dictionary – US $19.99.
Zhongshan Medical Dictionary – US $49.99.