ConvertKit (Kit) vs Beehiiv
AUG v3 head-to-head — newsletter platforms. Legacy creator-economy darling vs growth-mode upstart. Beehiiv's 30 vs ConvertKit's 12 — what happens when a younger competitor out-engineers the incumbent.
Δ 17.57 AUG points — Beehiiv scores higher than ConvertKit (Kit). The framework predicts this because of the per-factor breakdown below — not opinion, just multiplicative math.
7-factor head-to-head
| Factor | ConvertKit (Kit) | Beehiiv | Winner |
|---|---|---|---|
| Acquisition | 7 | 8 | Beehiiv |
| Activation | 7 | 9 | Beehiiv |
| Engagement | 8 | 8 | — |
| Retention | 8 | 8 | — |
| Advocacy | 7 | 9 | Beehiiv |
| Monetization | 8 | 8 | — |
| Performance | 7 | 9 | Beehiiv |
| Composite AUG | 12.29 | 29.86 | Beehiiv |
ConvertKit (Kit) — full audit
ConvertKit/Kit is solid SaaS in a contested category. AUG composite ~12, healthy tier. The rebrand to Kit could compound positively (cleaner brand) or negatively (lost SEO equity from convertkit.com → kit.com domain shift). Lesson: when you're category #2-3, focus on retention quality over Acquisition volume. Kit has chosen this path correctly — better serve creators who commit than chase every newsletter dabbler.
Strongest: Engagement + Retention + Monetization — once a creator commits, the product retains.
Weakest: Acquisition (7) + Advocacy (7) — bounded by Mailchimp dominance + emerging Beehiiv competition. Recent Kit rebrand muddied positioning.
Read the full ConvertKit (Kit) audit →
Beehiiv — full audit
Beehiiv is the modern newsletter platform doing the right things. AUG composite ~30, Thriving tier. The Boost network (paid cross-recommends) is the kind of structural innovation that compounds for years. Lesson for founders: when entering a contested category (Substack incumbent), don't just match features — add ONE structural innovation that's hard to copy (Boost). Substack copied it in 2024 but Beehiiv has 3-year head start on iteration.
Strongest: Advocacy (9) — Boost network is the most novel structural Advocacy mechanism in creator-economy SaaS in recent years.
Weakest: Engagement (8) — bounded by newsletter-platform inherent dynamics (writers check weekly, not daily).
The lesson
Legacy creator-economy darling vs growth-mode upstart. Beehiiv's 30 vs ConvertKit's 12 — what happens when a younger competitor out-engineers the incumbent.
The AUG framework is multiplicative: a zero in any factor near-zeros the whole. Comparing ConvertKit (Kit) and Beehiiv side-by-side surfaces where each is investing and where each has compound-killing gaps. Both companies could grow the composite by fixing their weakest factor — but the rank-ordering of factors-to-fix is rarely intuitive. That's what AUG v3 is for.
Methodology + confidence
Both audits are external-observation — scored from publicly visible signals only. Confidence: ConvertKit (Kit) 0.7 · Beehiiv 0.7.
Composite formula: AUG = 100 × Acq × Act × Eng × Ret × Adv × Mon × Perf ÷ 10⁷. See full scoring transparency.
Audit your own SaaS
Same 7-factor rubric, scored on your own product in 60 seconds. Free, no signup. See where YOU rank vs the comparisons above.