Investor Due Diligence Report
A newsletter about what science tells us about becoming better from Charles Duhigg, author of The Power of Habit and Supercommunicators.
60K
5.7K paid
+0.8%
Insufficient data
25 of 30 days needed
Pricing
$5/mo
$50/yr annual option
$23K
5.7K paid subs
$23K/mo – $23K/mo(±0%)
Bi-weekly
0.5 posts/week
56/100
Variable (~15.7d avg)
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| Humanity United Now - Ana Maria Mihalcea, MD, PhD | 71K | N/A | $5/mo | substack |
| The Intrinsic Perspective | 69K | N/A | $7/mo | substack |
| Starts With A Bang | 61K | N/A | Free | substack |
| Unsettled Science | 53K | N/A | $5/mo | substack |
| Month | Subscribers | Est. Revenue | Change |
|---|---|---|---|
| Feb 2026 | 59K | $22,279.88 | — |
| Mar 2026 | 59K | $22,279.88 | ~0% |
| Apr 2026 | 60K | $22,657.5 | ~0% |
Platform Dependency
Hosted on substack subdomain
Publishing Consistency
Variable publishing frequency
Key Person
Single-author publication — key-person dependency
Revenue Model
Active paid subscription tier
Subscriber threshold
60K subscribers — above the 2K category median for first paid tier
Has paid tier
Active paid subscription offering
Peer monetization
100% of 18 similar-size peers in Science have paid tiers
Pricing position
$5/mo vs $9.58/mo category average (277 newsletters)
| Date | Monthly | Annual |
|---|---|---|
| Mar 2026 | $5 | $50 |
Disclaimer: This report is generated automatically based on publicly available data and proprietary estimation models. Estimated subscriber counts are derived from engagement patterns and should be verified through direct disclosure. Revenue estimates are based on known pricing and estimated paid subscriber counts. This report is for informational purposes only and should not be the sole basis for investment decisions.
Score based on available components only.
| Component | Score | Weight |
|---|---|---|
| Engagement Rate | 32/100 | 30% |
| Paid Subscriber Ratio | 100/100 | 25% |
| Publishing Consistency | 85/100 | 10% |
| Singal-Minded | 48K | N/A | $5/mo | substack |