01
Platform Fit Scorecard
Score beehiiv, Kit and Substack against your actual job, list runway, automation, monetization and need for control.
- Editable inputs
- Transparent scoring
- Official sources
First focused tool · Available now
Choose the platform that fits the job.
Score beehiiv, Kit and Substack against your audience, workflow, monetization plans and likely upgrade triggers. The assumptions stay visible and editable.
One problem, one file
Start with one $9 tool
The Platform Fit Scorecard is available now. The remaining tools and discounted bundle are being prepared and are not yet for sale.
02
12-Month Cost Calculator
Compare editable fixed-price assumptions with a revenue share and see the break-even point without hiding the formula.
- 12-month model
- Break-even checks
- Editable live-price inputs
Coming soon
03
30-Day Launch Planner
Move from an audience promise to issue zero, reader interviews, one revenue test and a Keep, Improve or Stop decision.
- Four-week plan
- Status tracking
- Decision memo
Coming soon
04
Migration Checklist
Protect subscribers, forms, automations, DNS, content, suppression lists and paid paths before a platform cutover.
- 15 migration checks
- Risk labels
- Cutover review
Coming soon
05
KPI & Revenue Tracker
Track qualified visits, signups, affiliate clicks, paid referrals and product revenue without confusing attention with income.
- 12-week tracker
- Automatic rates
- Evidence-to-action rules
Coming soon
Coming soon · Planned value
Newsletter Platform Decision Bundle
Use one connected system instead of five separate files. The integrated workbook carries the same inputs through the platform shortlist, cost model, 30-day plan, migration checks and KPI review.
$45Five tools separately$29Complete bundle36%Saved
Everything in the five tools, plus
- One integrated eight-sheet workbook
- 12-page decision field guide
- Welcome-email drafting framework
- One download instead of five
The bundle checkout will open only after all five products are complete.
Choose the smallest useful purchase
Choose a $9 tool if…
You have one immediate bottleneck and do not need the other worksheets yet.
Choose the $29 bundle if…
You need four or five tools, want the integrated workbook, or want the 12-page field guide.
Use the free tools if…
You are still exploring and do not need an editable file. Start with the free platform check.
Do not buy if…
You need guaranteed growth, managed migration or legal, tax, privacy, financial or deliverability advice.
Current facts, dated and linked
Platform facts were verified on 4 September 2026 against the official beehiiv pricing page, Kit pricing page and Substack fee guide. Live prices and plan boundaries can change, so the calculator inputs remain editable.
Disclosure and limits
Stackgap Atlas is independent and is not affiliated with Kit or Substack. Some free Atlas pages link to beehiiv through an affiliate relationship. Buying these tools is a separate purchase and does not change the workbook scoring.
These products are educational planning tools. They do not guarantee platform suitability, growth, revenue or savings and do not replace legal, tax, privacy, financial, accounting or deliverability advice. See the methodology, privacy notice and affiliate disclosure.