I started tracking where my time goes during development. Turns out I spend a lot of it typing words that aren't code. Slack messages, PR descriptions, documentation, AI prompts. All of it text. All of it slow.
Speaking is 2.5-3x faster than typing. The numbers add up across a full day.
The Numbers#
| Metric | Typing | Speaking | Difference |
|---|---|---|---|
| Average speed | 50 WPM | 140 WPM | 2.8x faster |
| Words per 8-hour day (50% typing) | ~12,000 | ~33,600 | +21,600 words |
| Time to write 1,000 words | 20 min | 7 min | 13 min saved |
| Time to write 5,000 words | 100 min | 36 min | 64 min saved |
I'm assuming about half of a developer's day involves producing text of some kind. Code, comments, docs, messages, emails, AI prompts. Your number might be higher or lower, but 40-60% seems typical.
Where the Text Goes#
Code Comments & Docs
JSDoc, docstrings, README files, inline comments. Prose, not code. A 200-word docstring takes 4 minutes to type, 1.5 minutes to speak.
Slack & Teams Messages
50+ messages a day at 20 words each is 1,000 words. Voice cuts that time by two-thirds.
AI Prompts
Cursor, Claude Code, Copilot. Detailed prompts (50-100 words) get better results. Voice makes long prompts painless.
Emails
Professional emails run 100-200 words. Dictate in 30 seconds what takes 3-5 minutes to type.
Where the Time Goes (And Gets Saved)#
| Activity | Words/Day | Typing Time | Speaking Time | Time Saved |
|---|---|---|---|---|
| Code comments & docs | 800 | 16 min | 6 min | 10 min |
| Slack/Teams messages | 1,000 | 20 min | 7 min | 13 min |
| Emails | 500 | 10 min | 4 min | 6 min |
| AI prompts (Cursor, etc.) | 1,500 | 30 min | 11 min | 19 min |
| PR descriptions & reviews | 600 | 12 min | 4 min | 8 min |
| Meeting notes | 400 | 8 min | 3 min | 5 min |
| Jira/Linear tickets | 300 | 6 min | 2 min | 4 min |
| Total | 5,100 | 102 min | 37 min | 65 min |
That's over an hour a day from faster text input alone. I'm probably being conservative here. With AI post-processing (Whisperer's Rewrite mode), quality goes up too.
The Interruption Cost#
Speed is part of it. The other part is staying in flow.
You Don't Have to Stop Coding#
Mid-coding, someone pings you on Slack. Instead of switching apps and typing a reply, you hold Fn, speak the reply, release. Your hands never left the keyboard. Your brain never fully left the code.
Modes Switch Automatically#
With Whisperer's per-app profiles, you get Code Mode in VS Code, natural language in Slack, email formatting in Gmail. No manual switching.
Less Tab-Hopping#
A quick Slack reply takes 30 seconds to type but costs 2-5 minutes of distraction (find the conversation, context switch, switch back). Voice shrinks the interruption.
RSI Prevention#
This matters more than people admit. Typing 5,000+ words a day adds up. Wrist pain, finger strain, the whole thing. Voice offloads 60-80% of that typing volume.
If RSI knocks you out for one week per year, that's 40 hours lost. Whisperer costs $14.99 once. The injury prevention alone makes it worthwhile. More in the RSI prevention guide.
What a Voice-Heavy Day Looks Like#
9:00 AM — Open Cursor. Dictate the first AI prompt describing what you're building. (1 minute instead of 3)
9:30 AM — Slack standup. Speak your update. (15 seconds instead of 2 minutes)
10:00 AM — Code review. Dictate PR comments. (30 seconds per comment instead of 2 minutes)
11:00 AM — Documentation. Speak a README section. Use Rewrite mode to clean it up. (5 minutes instead of 20)
1:00 PM — Stakeholder email. Dictate, let Email AI mode format it. (1 minute instead of 5)
3:00 PM — Bug report. Speak the repro steps into Jira. (1 minute instead of 4)
4:00 PM — More Claude Code prompts all afternoon. (20+ minutes saved total)
What You Need#
- Whisperer — $14.99 lifetime for Pro Pack (download)
- Your Mac's built-in mic — works fine. External mic helps in noisy places.
- 5 minutes of setup — download a model, set your shortcut, add dictionary terms.
No subscription. No cloud. No ongoing cost.
Related: Voice Coding vs. Typing Speed, Voice Coding — Complete Guide, Dictation for Vibe Coding. See pricing and features.
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