Investor Due Diligence Report
by Sheryl Chan
A chronic illness blog that aims to share personal patient experiences and pain management tips, combined with health resources backed by the latest research.
7K
~0%
Subscriber count is a platform estimate
Pricing
$10/mo
$99/yr annual option
$4K
~490 est. paid subs
$2K/mo – $6K/mo(±50%)
2.7
0.04%
(comments + likes) / subscribers
Monthly
0.3 posts/week
56/100
Variable (~30.2d avg)
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| Unbiased Science | 140K | +0.4% | $5/mo | substack |
| Neuroscience & Psychotherapy | 72K | +0.7% | $10/mo | substack |
| Healing The Source | 70K | N/A | $8/mo | substack |
| Due Diligence and Art | 60K | N/A | $8/mo | substack |
| Month | Subscribers | Est. Revenue | Change |
|---|---|---|---|
| Feb 2026 | 3.5K | $2,149.88 | — |
| Mar 2026 | 1.5K | $921.38 | -57.1% |
| Apr 2026 | 1K | $614.25 | -33.3% |
| May 2026 | 1K | $614.25 | ~0% |
| Jun 2026 | 1K | $614.25 | ~0% |
| Jul 2026 | 2.5K |
Platform Dependency
Uses ghost platform
Publishing Consistency
Variable publishing frequency
Key Person
Single-author publication — key-person dependency
Audience Concentration
Consistent engagement across posts
Subscriber threshold
7K subscribers — above the 1K category median for first paid tier
Has paid tier
Active paid subscription offering
Peer monetization
66% of 61 similar-size peers in Health have paid tiers
Pricing position
$10/mo vs $5/mo category median (583 newsletters)
| Date | Monthly | Annual |
|---|---|---|
| Feb 2026 | $10 | $99 |
| Feb 2026 | $50 | $489 |
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.
| Component | Score | Weight |
|---|---|---|
| Engagement Rate | 52/100 | 30% |
| Publishing Consistency | 47/100 | 10% |
| 🌻 A Year of Mental Health |
| 58K |
| N/A |
| Free |
| substack |
| $1,535.63 |
| +150.0% |
| Aug 2026 | 5K | $3,071.25 | +100.0% |
| Sep 2026 | 5K | $3,071.25 | ~0% |
| Oct 2026 | 7K | $4,299.75 | +40.0% |
Revenue Model
Active paid subscription tier