iSpeech
8.4#2 in text-to-speech software$50, paid onceFree planAndroidiOSWebAPI
Visit| Fact | iSpeech | Luvvoice |
|---|---|---|
| API access | API access requires an API key, with mobile development, mobile production, and web/general production key types. | Yes |
| Commercial use | Yes | The FAQ says users own generated audio and may use it in commercial projects subject to local laws and regulations. |
| Export formats | aiff,mp3,ogg,wma,flac,wav,alaw,ulaw,vox,mp4 | MP3 |
| Free plan | Yes | Yes |
| Platforms | web,ios,android,api | web,ios,api |
iSpeech may suit people who need text-to-speech or transcription, as well as developers seeking API or SDK access. Its described education uses include mobile learning apps, spoken course materials, and pronunciation practice.
You want what its maker publishes above — check its page for the details.