The System Design Newsletter
Investor Due Diligence Report
substackTechnology
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236K
10K paid
+0.2%
Insufficient data
26 of 30 days needed
Pricing
$17.5/mo
$150/yr annual option
$126K
10K paid subs
$126K/mo – $126K/mo(±0%)
1.2
97.0
0.04%
(comments + likes) / subscribers
Weekly
1.8 posts/week
78/100
Consistent (~4.0d avg)
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| [ Center for Humane Technology ] | 180K | +0.3% | Free | substack |
| Coding Challenges | 93K | +0.5% | $8/mo | substack |
| Wonder Tools | 86K | N/A | $8/mo | substack |
| Internal Tech Emails | 59K | N/A | $10/mo | substack |
| Month | Subscribers | Est. Revenue | Change |
|---|---|---|---|
| Feb 2026 | 221K | $118,351.8 | — |
| Mar 2026 | 227K | $121,564.8 | +2.7% |
| Apr 2026 | 231K | $123,706.8 | ~0% |
| May 2026 | 235.5K | $126,113.4 | ~0% |
Platform Dependency
Hosted on substack subdomain
Publishing Consistency
Regular publishing schedule
Key Person
Single-author publication — key-person dependency
Audience Concentration
Some posts outperform significantly
Subscriber threshold
236K subscribers — above the 2K category median for first paid tier
Has paid tier
Active paid subscription offering
Peer monetization
100% of 5 similar-size peers in Technology have paid tiers
Pricing position
$17.5/mo vs $5/mo category median (789 newsletters)
| Date | Monthly | Annual |
|---|---|---|
| Mar 2026 | $18 | $150 |
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 | 66/100 | 30% |
| Paid Subscriber Ratio | 100/100 | 25% |
| Growth Consistency | 84/100 | 15% |
| Publishing Consistency | 59/100 | 10% |
| Box of Amazing |
| 23K |
| N/A |
| Free |
| substack |
Revenue Model
Active paid subscription tier