Altered Studio vs iSpeech
Altered Studio
altered.aiiSpeech
ispeech.orgSide by side
| Figure | Altered Studio | iSpeech |
|---|---|---|
| Price from | $30/mo | $0.25/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 6 | 15 |
| Spec score · Text-to-Speech Software | 9.5 (#1) | 9.2 (#6) |
| Spec score · Text-to-speech tools | 9.3 (#6) | 9.2 (#11) |
| API access | The FAQ says API access is offered to Enterprise customers for integrating Studio into other systems. | API access requires an API key, with mobile development, mobile production, and web/general production key types. |
| Free plan | Yes | Yes |
| Headquarters | The privacy policy gives Altered Ltd's address as Ground Floor, 298 West End Lane, London NW6 1LN, UK. | The company lists Newark, New Jersey as headquarters and San Francisco as an additional office. |
| Product | Altered Studio combines multiple Voice AI technologies in one platform for creating professional voice content. | iSpeech provides text-to-speech and automated speech recognition services through APIs, SDKs, and online tools. |
| Rating on Capterra | 0.0 out of 5 from 0 reviews | 4.2 out of 5 from 6 reviews |
| Rating on G2 | 4.3 out of 5 from 2 reviews | 4.5 out of 5 from 5 reviews |
| Security | The privacy policy says Google Drive access is optional and that Google user data is used only to provide or improve user-facing application features. | The privacy policy says iSpeech uses commercially reasonable physical, managerial, and technical safeguards, while stating it cannot warrant the security of transmitted information. |
| Paid from | 30 | 2.95 |
| Voice controls | Morphing provides controls for prosody, pitch, age, gender, loudness and vocal creak. | TTS requests support selectable voices, audio formats, bitrates, frequencies, playback speed, pitch, padding and bit depth. |
| What it does | Altered Studio combines speech-to-speech voice morphing, text-to-speech, cloning, transcription, translation, dubbing and audio editing in one platform. | iSpeech provides cloud text-to-speech and automated speech-recognition services that turn text into audio or submitted audio into transcriptions. |
Plans
Altered Studio
- FreeFree
- Creator$30 a month
- Professional$90 a month
- Creator$360 a year
- Professional$1,080 a year
- EnterprisePriced on request
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
In their own words
Altered Studio
Altered Studio combines voice transformation and audio production tools for creating professional voice content. Its Speech-to-Speech and Performance-to-Performance morphing changes a voice while retaining the speaker’s performance. Other tools include text-to-speech, voice cloning, AI voice cleaning, denoising, audio editing, DSP effects and batch processing. Studio supports transcription and translation in 75+ languages, and text-to-speech voice-over in 70+ languages. A Rapid Voice Clone can be made from 4–8 seconds of audio; custom voice models are available by contacting Altered. The online Voice Editor can work with Google Drive audio, while RealTime Pro routes audio through a virtual microphone to apps including Discord, Zoom, Microsoft Teams and Google Meet. The free plan includes 3 minutes per month of voice morphing and 10,000 AI tokens. Creator costs $30 a month billed annually; Professional costs $90 a month billed annually. Desktop use requires a Windows PC with an 8GB+ Nvidia GPU, and mobile devices are not currently supported.
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.