Option A: Gemini: organises screen evidence, then drafts the messages
Best when: You need help sorting screen-state and feature evidence.
What it does: Gemini sorts evidence, then drafts; you check each stage.
Strong at: Drafts and summarises text from material you supply.
Limit: Both steps need checking; an unsupported recovery promise can slip in.
Free plan: Yes
Option B: ChatGPT: builds the record and messages from your notes
Best when: You can prepare supported actions and control labels yourself.
What it does: You write notes; ChatGPT builds; you check against originals.
Strong at: Keeps checked notes and instructions together in a Project.
Limit: Free plan limits file uploads, image generation, voice and data analysis.
Free plan: Yes, limited (images, voice, deep research, Codex)
Option C: Claude: drafts the messages, Grammarly suggests wording
Best when: You want first drafts of the messages, then wording polish.
What it does: Claude drafts; Grammarly edits wording; you check both.
Strong at: Claude drafts text; Grammarly checks grammar, spelling and tone.
Limit: General writing tools; not confirmed for this task.
Free plan: Claude: Yes, limited (five-hour resets); Grammarly: Yes, limited (100 AI prompts/month)