Cheap international calls over WiFi or mobile data
Independent voice studio for live conversations and text to speech
Stage
Not given
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Founded
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Based in
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Pricing model
Freemium
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Pricing
Free: 1 minute included with download. Starter: $1.99 USD (~30 minutes to Canada). Standard: $4.99 USD (~70 minutes to Canada). Pro: $9.99 USD (~140 minutes to Canada). Per-minute rates from $0.03/min (United Kingdom) to higher rates for other countries. No subscription, no expiration.
Starter: $19.9/month for 660 credits. Pro: $39.9/month for 2,000 credits. Max: $79.9/month for 4,100 credits. Annual billing also available. Live Talk costs one credit per six seconds (10 credits per minute). Text to Speech costs one credit per 160 trimmed Unicode characters, rounded up per request.
Key features
No registration required—download and dial immediately
Per-second billing with no connection fees
Minutes never expire—no subscription or auto-renewal
Works on WiFi or mobile data from anywhere
Rates visible before calling—200+ countries covered
Secure payments through Apple App Store and Google Play
Crystal-clear VoIP quality over WiFi or mobile data
Calls routed through Tier-1 telecommunications carriers
Privacy by design—no personal data collection or account needed
Live voice conversations with multiple voice options
Text-to-speech with downloadable WAV files
Multiple conversation modes including casual chat, language tutoring, mock interviews, and storytelling
Live captions during conversations
Downloadable conversation transcripts
Support for multiple languages
Session length limits based on subscription plan
Credit balance management across both tools
Failed operation refunds and recovery
What makes it different
Reduces costs by up to 98% compared to carrier roaming charges
One free minute included with every download—no card or registration needed
Calls real phone numbers so the other person doesn't need the app
Transparent per-minute pricing with no hidden fees or connection charges
Independent service clearly distinguished from Block's official Dessa research model
Transparent provider identification with clear separation of research samples from tool outputs
Unified credit system shared between live chat and text-to-speech tools
No credit card required for free trial
Detailed documentation of pricing calculation and service limits
Telvio
Dessa AI