Side by side

iSpeech vs Voicebox

Both stand on text-to-speech tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

iSpeech

Free plan Open source AndroidAPIExtension+5

iSpeech combines speech generation, transcription, APIs, SDKs, and downloadable audio formats. Its plan details distinguish personal use, recording allowances, and dynamic TTS usage, so buyers should match the option to their intended use.

Visit iSpeech

Voicebox

Free plan Open source AndroidAPIiPhone+5

Voicebox centers voice work on a local desktop app, with generation, dictation, editing, and API features. The Local plan is free forever; cloud features are still marked as coming soon.

Visit Voicebox

The facts

	iSpeech	Voicebox
Free plan	Yes	Yes
Open source	Yes	Yes
Runs on	Android, API, Extension, iPhone, Linux, Mac, Web, Windows	Android, API, iPhone, Linux, Mac, Self-hosted, Web, Windows
Lowest paid plan	See the plans	Cloud: $12 a year
Plans published	13	3
Maker	Not published	Not published
Website	ispeech.org	voicebox.sh
On text-to-speech tools	#4 of 232	#1 of 232

iSpeech: what it does well

Supports both text-to-speech and speech recognition.
Homepage lists more than 30 languages.
Audio downloads include ten listed formats.
Commercial use and API access are available.
Developer tools list SDKs for multiple languages.

What to know first

Plus is limited to 30-minute recordings.
Pay Per Use covers dynamic TTS usage only.
Static use, caching, or audio downloads require contacting iSpeech.

Voicebox: what it does well

Works offline without an account.
Local plan includes unlimited generations and captures.
Local Whisper models support 99 languages.
Local REST API supports speech generation.

What to know first

Cloud backup and mobile sync are coming soon.
Cloud pricing and limits are not final.
Desktop downloads list specific macOS and Windows builds; Linux is built from source.

Alternatives to iSpeech Alternatives to Voicebox The whole list