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Speech synthesis (TTS) & Speech recognition (STT)

TTS Engines

„Engines“ provide the speech synthesis service to other apps. Most Android devices ship with Google Text-to-Speech pre-installed (some with Pico TTS). Alternatives unfortunately got rare, or seem unmaintained…

• AlfaNumTTS SER (4.6@133) Ǥ 7 Serbian
• Text To Speech (TTS) (4.1@12,756) 6 2
• Auto TTS (4@589; ~EUR 9.50) Ǥ 1 auto switch TTS engine to the correct language based on text
• RHVoice (3.9@1,103) 7 Github
• Speech Services by Google (3.8@3,556,111) Ǥ 12
• Text To Speech Tool (3.4@36) 0 LastUpdate: 2019-07-21 GitLab; not an engine itself, but sometimes helps to make engines available (e.g. for OsmAnd)
• Acapela TTS Voices (3@5,784) Ǥ 12
• VAJA Text-to-Speech Engine (3@391) 9 LastUpdate: 2019-01-09 English & Thai
• eSpeak NG Text-to-Speech (2.8@1,321) Ǥ 6 3
• Aharon Hebrew TTS (2.8@145) 5 LastUpdate: 2014-01-19 Hebrew & English; demo version
• Vocalizer TTS Voice (English) (2.7@8,543) Ǥ 8 2 LastUpdate: 2021-10-30 50 languages (in-app purchase)
• eSpeak (2.6@225) 0 Github

Text-to-Speech converters

• T2S: Text to Voice/Read Aloud (4.3@33,026) Ǥ 11 3
• Text To Speech Synthesis (4.3@43) 0 LastUpdate: 2019-06-09 / Text To Speech Pro (4.2@26) 0 LastUpdate: 2020-04-28
• @Voice Aloud Reader (TTS) (4.2@123,093) Ǥ 15 5 many formats: PDF & eBooks, Word, OpenOffice …
• Tell Me - Text To Speech (4.1@2,996) Ǥ 3 LastUpdate: 2021-06-12
• Homework Dictator ❤️ Ultimate (3.8@12) 5 2 LastUpdate: 2020-03-02
• Narrator’s Voice - TTS (3.7@1,206,928) Ǥ 26 14
• Speech To Text Converter (3.7@31,227) Ǥ 11 2
• Text to Speech (TTS) (3.7@15,762) Ǥ 6 1 LastUpdate: 2017-04-13
• Text to Speech (3.6@324) 5 1 LastUpdate: 2019-11-26 / Text to Speech Pro (3.4@5; ~EUR 3.00) 7 LastUpdate: 2019-01-21
• TextToMp3-text to speech(TTS) (2.4@1,256) Ǥ 16 5 LastUpdate: 2020-08-30 uses online services for conversion
• Speech Synthesis (1@49) 2 LastUpdate: 2019-07-13
• TTS Util (0@0) 2 Github
• Woord Text to Speech (TTS) (0@0) 0 LastUpdate: 2020-05-07

Voice-to-Text converters

• Speechnotes - Speech To Text (4.4@28,925) Ǥ 13 2
• Voice Notebook speech to text (4.3@17,675) Ǥ 17 2
• Voice Notes (4.1@24,154) Ǥ 12 3
• Kõnele (4.1@218) 6 Github; Speech-to-text provider
• Voice Typing Keyboard Easy App (3.9@12,420) Ǥ 7 7
• Speech Services by Google (3.8@3,556,111) Ǥ 12
• Speech To Text | Voice To Text (3.8@371) 6 1
• Speech To Text Converter (3.7@31,227) Ǥ 11 2
• Speech Text & Text Speech - wi (3.5@882) 6 1
• Speech To Text (3.3@6,059) Ǥ 7 2 LastUpdate: 2020-04-08
• Kõnele service (0@0) 3 Github