iSpeech
8.5#1 in text-to-speech softwareFree planFree planAndroidiOSWebAPI
VisitiSpeech vs Sonex Labs
Sonex Labs
7.5#65 in text-to-speech tools$5 usage-basedFree planWebAPISelf-hosted
VisitWhat both publish
| Fact | iSpeech | Sonex Labs |
|---|---|---|
| API access | API access requires an API key, with mobile development, mobile production, and web/general production key types. | Yes |
| Company | iSpeech describes itself as a privately held company headquartered in Newark, New Jersey, with an office in San Francisco, California. | The site footer identifies the company as Sonex Labs and shows copyright © 2026; the pages reviewed did not state its headquarters or founding year. |
| Export formats | aiff,mp3,ogg,wma,flac,wav,alaw,ulaw,vox,mp4 | WAV,MP3,OGG,Opus,μ-law |
| Free plan | Yes | Yes |
| Paid from | 2.95 | 5 |
| Platforms | web,ios,android,api | web,api |
| Product | iSpeech provides text-to-speech and automated speech recognition services through APIs, SDKs, and online tools. | Sonex Labs offers voice AI products for speech synthesis, speech recognition, voice agents and calling workflows. |
iSpeech plans
- Pay Per Use$50 a month
- Pay Per Install$0.25 a month
- HackerFree
- BasicFree
- Plus$2.95 a month
- Premium$3.95 a month
Sonex Labs plans
- Pay as you goFree
- Monthly plan$5 a month
- EnterprisePriced on request
Pick iSpeech if…
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.
Pick Sonex Labs if…
You want what its maker publishes above — check its page for the details.