Telugu
తెలుగుThe original, and the most complete. A 54,000-word dictionary with English glosses and IAST, reverse lookup, and a word of the day. The other three are forks of it.
Indic Script Keyboards
On-screen keyboards for Telugu, Hindi, Tamil, and Kannada. They follow the akshara rather than the codepoint, so the keys change as a syllable takes shape. Installable, and they work offline.
Hindi
हिन्दीDevanagari, with the largest word list of the four at 216,000 entries. Adds a reph modifier and the nukta consonants — क़ ख़ ग़ ज़ फ़ ड़ ढ़ — for Perso-Arabic loanwords.
Tamil
தமிழ்A simpler grid than the others — Tamil has fewer consonants and no voiced or aspirated distinctions. Still on a seed word list, so predictions are thin.
Kannada
ಕನ್ನಡClosest of the four to Telugu — the two scripts share an ancestor and most of their structure. Also still on a seed word list.
Add any of them to your home screen to run full-screen and offline. Type on the on-screen keys or your own, enter romanised text and let ITRANS convert it, or search in English to find a word in script. Tap the title in any keyboard to switch to another.
These type on their own page — you copy the result out. They don’t replace the system keyboard in other apps.