Cartas do Eli Vieira
Investor Due Diligence Report
substackScience
Blog e newsletter de um biólogo geneticista por escolha que se tornou jornalista por acidente de percurso.
3K
300 paid
N/A
Pricing
$5/mo
$30/yr annual option
$878
300 paid subs
$878/mo – $878/mo(±0%)
Unknown
0.0 posts/week
Score based on available components only.
| Component | Score | Weight |
|---|---|---|
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| Aether Pirates of the Matterium! | 99K | +0.5% | Free | substack |
| The Science of Better | 84K | N/A | $5/mo | substack |
| Hidden Brain | 74K | +0.7% | Free | substack |
| The Intrinsic Perspective | 73K | +0.7% | $7/mo | substack |
| Month | Subscribers | Est. Revenue | Change |
|---|---|---|---|
| Mar 2026 | 3K | $877.5 | — |
| Apr 2026 | 3K | $877.5 | ~0% |
Platform Dependency
Uses substack platform
Key Person
Single-author publication — key-person dependency
Revenue Model
Active paid subscription tier
Subscriber threshold
3K subscribers — above the 2K category median for first paid tier
Has paid tier
Active paid subscription offering
Peer monetization
83% of 80 similar-size peers in Science have paid tiers
Pricing position
$5/mo vs $5/mo category median (180 newsletters)
| Date | Monthly | Annual |
|---|---|---|
| Mar 2026 | $5 | $30 |
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.
| Paid Subscriber Ratio |
| 90/100 |
| 25% |
| Starts With A Bang |
| 65K |
| N/A |
| Free |
| substack |