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Riffsmith vs TabMail

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Riffsmith compared with TabMail
Detail RiffsmithTabMail logo TabMail
What it doesAI-powered improv comedy training with daily scene practice and real-time coaching Agentic AI email assistant with zero data retention for iOS and Thunderbird
StageStartup Not given
Founded2025 Not given
Based inNot given CA
Pricing modelFreemium Freemium
PricingNot given Free 2-week trial (eligible new accounts). TabMail Zero: brings your own API keys (OpenAI, Anthropic, Google). TabMail Basic: CAD $15.00 per month (includes TabMail Voice for macOS, agentic dictation, unlimited email autocompletion and AI agent requests, limited priority AI agent requests, good for
Key features
  • Daily Scene Practice targeting specific improv skills with scoring on acceptance, adaptation, pattern development, and pacing
  • AI Scene Partner that responds in character with separate coaching layer
  • Stage Time Streak with banked streak freezes covering missed days
  • Skill Progression Tree unlocking advanced improv techniques
  • XP and Performance Metrics tracking progress across skill categories
  • Hearts and Speed Riff modes for untimed or five-second timed responses
  • On-device speech recognition with no audio recording or uploading
  • Voice dictation with context awareness for composing and editing emails
  • Suggested email replies with AI composition
  • Email triage and inbox management
  • AI-powered inbox assistant for research and answering questions
  • Agentic mode with calendar, contacts, files, web search integration
  • Support for Gmail, Outlook, iCloud, and IMAP accounts
  • Zero data retention for email and calendar content
  • On-device personalization data storage on iOS
  • Toggleable AI features with privacy controls
What makes it different
  • Real-time AI coaching that scores your performance and provides targeted feedback immediately after each scene
  • Privacy-first design with all audio processing and scene practice staying on your device by default
  • Stage Time streak system with banked freezes that prevent weeks of progress from being lost over one missed day
  • Structured skill progression tree reflecting real-world improv training pathways from foundation to advanced technique
  • Zero data retention: email and calendar content processed transiently without server storage
  • Open source: Thunderbird add-on and iOS app are publicly available on GitHub for transparency and contribution
  • Works with existing inboxes: no vendor lock-in, integrates Gmail, Outlook, iCloud, and IMAP
  • Agentic dictation understanding technical terms and acronyms through screen context
  • Built on trusted open source: Mozilla Thunderbird foundation with modern ML capabilities
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)6 no change since last check3 no change since last check
Trust Flow (Majestic)41
Citation Flow (Majestic)1219
Referring domains (Majestic)142

4 details filled in for both companies.

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