Use the same task for each comparison
Choose a small representative task: explain selected text, prepare a reminder, summarise a document or review an agent result. Use the same source and constraints in each candidate, then inspect the outcome.
Consider how many steps it takes to begin, correct an error and return to the result. A feature may exist but still be awkward to use in the middle of your work.
Check the four practical questions
- Does it work on your device and operating system?
- Which requests are local and which use a provider?
- Which actions require accounts, permissions or integrations?
- What is included in the app license, and what is charged separately?
Check current terms on the official product page. A free edition, a trial, a one-time app license and a cloud subscription are different arrangements.
Test actions, not just fluent answers
An assistant can give a convincing explanation without completing the action. Verify reminder times, actual files, connected accounts and the result of an agent task. For important work, look for a clear point at which you can inspect and approve the outcome.
Local AI can be useful without a constant connection, but device memory, model quality and optional speech services still matter.
Where Denny and Denny Agents differ
Full Denny is the personal voice assistant in the Mac notch, with personal tools, agents and Office. Denny Agents focuses on Claude Code and Codex and offers free and full editions. They use separate licenses.
For current full Denny, check Apple Silicon and macOS 14 requirements and request the build through support. Denny Agents requires Apple Silicon and macOS 13 or later. Use the product’s current release and guide to check its exact availability.
