iSpeech vs NaturalReader
iSpeech
ispeech.orgNaturalReader
naturalreaders.comSide by side
| Figure | iSpeech | NaturalReader |
|---|---|---|
| Price from | $0.25/mo | $6.58/mo |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | — |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | — |
| Plans published | 15 | 9 |
| Spec score · Text-to-Speech Software | 9.2 (#6) | 8.6 (#43) |
| Spec score · Text-to-speech tools | 9.2 (#11) | 8.9 (#19) |
| Commercial use | Yes | Yes |
| Export formats | aiff,mp3,ogg,wma,flac,wav,alaw,ulaw,vox,mp4 | MP3,WAV |
| Free plan | Yes | Yes |
| Headquarters | The company lists Newark, New Jersey as headquarters and San Francisco as an additional office. | Richmond, British Columbia, Canada |
| Languages | The homepage says the Speech API supports text-to-speech and speech recognition in more than 30 languages. | AI voices support over 90 languages, with multilingual voice cloning available. |
| Platforms | web,ios,android,api | web,windows,macos,ios,android,chrome_extension |
Plans
iSpeech
- Plus$2.95 a month
- Premium$3.95 a month
- Pay Per Use$50 a month
- Pay Per Install$0.25 a month
- BasicFree
- HackerFree
- Plus$2.95 a month
- Premium$3.95 a month
- Junior$29 a month
- Pay-per-use 2,000 credits$50, paid once
NaturalReader
- Lite$79 a year
- Plus$119 a year
- Pro$25.90 a month
- Starter$198 a year
- Creator$49 a month
- Team$192 a year
- Plus EDU$299 a year
- Lite EDU$599 a year
- Site License$3,300 a year
In their own words
iSpeech
iSpeech provides text-to-speech and automated speech recognition through APIs, SDKs, and online tools. Its speech API can synthesize audio with multiple voices, formats, bitrates, frequencies, and playback speeds, and supports MathML and SSML. The API can also transcribe submitted audio across multiple languages and recognition models; iSpeech says custom models can be created. The homepage lists support for more than 30 languages. Audio downloads are available in AIFF, MP3, OGG, WMA, FLAC, WAV, A-law, μ-law, VOX, and MP4 formats. Listed access includes Android, iOS, Linux, macOS, web, Windows, API, and extension. The Basic plan is free for personal use, and commercial use is listed as available. Plus costs $2.95 a month, billed monthly, and includes 30-minute recordings, approximately 4,167 words. Premium costs $3.95 a month, billed monthly, with 12-hour recordings, approximately 100,000 words. Pay Per Use costs $50 a month for dynamic TTS usage only and includes 2,000 credits. Pay Per Install costs $0.25 a month and has a 10,000-install minimum.
NaturalReader
NaturalReader converts written documents into spoken audio and supports formats including PDF, EPUB, DOC/DOCX, PPT/PPTX, Numbers, and Pages. It is available on Android, iOS, macOS, Windows, the web, and as an extension; its mobile apps include offline mode. AI voices support over 90 languages, and voice cloning is available. Users can download audio as MP3, while commercial plans also support WAV at 44.1 kHz. The free forever plan does not require a credit card. Personal plans are licensed for personal use and do not include the commercial AI Voice Generator; commercial plans include commercially licensed audio for business and public uses. EDU accounts let administrators manage students, teachers, and classrooms and provide shared document libraries. Plans include individual, commercial, team, education, and site-license options, with different allowances and billing arrangements. Listed prices include Lite at $79 a year, Plus at $119 a year, and Pro at $25.90 a month; the pricing note lists paid plans from $13.90/user/mo. App-store prices may vary due to exchange rates, fees, taxes, or VAT.