Dr Phil's Learning Research Digest
Investor Due Diligence Report
substackEducation
The latest research on how humans learn, translated into easy-to-apply course design practices, every month (plus some classics from the archive).
10K
500 paid
~0%
Subscriber count is a platform estimate
Pricing
$10/mo
$110/yr annual option
$4K
500 paid subs
$4K/mo – $4K/mo(±0%)
Previously Monthly
0.2 posts/week
89/100
Very Consistent (~36.8d avg)
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| Prof G Markets | 424K | +0.1% | $20/mo | substack |
| Career Brew | 353K | -0.3% | Free | substack |
| Uncharted Territories | 134K | N/A | $10/mo | substack |
| Watch and Learn English | 21K | N/A | Free | substack |
| Month | Subscribers | Est. Revenue | Change |
|---|---|---|---|
| Mar 2026 | 9K | $5,339.25 | — |
| Apr 2026 | 10K | $5,932.5 | +11.1% |
Platform Dependency
Hosted on substack subdomain
Publishing Consistency
Regular publishing schedule
Key Person
Single-author publication — key-person dependency
Revenue Model
Active paid subscription tier
Subscriber threshold
10K subscribers — above the 1K category median for first paid tier
Has paid tier
Active paid subscription offering
Peer monetization
61% of 23 similar-size peers in Education have paid tiers
Pricing position
$10/mo vs $5/mo category median (271 newsletters)
| Date | Monthly | Annual |
|---|---|---|
| Mar 2026 | $10 | $110 |
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 |
|---|---|---|
| Paid Subscriber Ratio | 57/100 | 25% |
| inFocus with David Coletto |
| 21K |
| N/A |
| $8/mo |
| substack |