AppFolio, Inc. vs Duolingo, Inc.
Side-by-Side SaaS Metrics & Valuation Comparison
analyticsVertical SaaS
Data as of Q2 2026
Summary Verdict
APPF: 2—DUOL: 3wins
Rule of 40
40.6APPF
81.8DUOL
check_circleDUOL leads
Revenue Growth
29.5%APPF
49.0%DUOL
check_circleDUOL leads
Gross Margin
87%APPF
73%DUOL
check_circleAPPF leads
FCF Margin
11.2%APPF
32.8%DUOL
check_circleDUOL leads
Operating Margin
17.4%APPF
13.2%DUOL
check_circleAPPF leads
NRR
—APPF
—DUOL
Metric
Rule of 40Efficiency score
APPF
40.6
DUOL
81.8check_circle
Revenue GrowthYoY
APPF
29.5%
DUOL
49.0%check_circle
Gross Margin% of revenue
APPF
87%check_circle
DUOL
73%
FCF MarginFree cash flow
APPF
11.2%
DUOL
32.8%check_circle
Operating MarginGAAP
APPF
17.4%check_circle
DUOL
13.2%
NRRNet retention
APPF
N/A
DUOL
N/A
EV / RevenueValuation multiple
APPF
7.5x
DUOL
5.8xcheck_circle
Market CapUSD
APPF
$7.7Bcheck_circle
DUOL
$7.2B
ARR GrowthYoY
APPF
N/A
DUOL
N/A
CAC PaybackMonths to recover
APPF
N/A
DUOL
N/A
insights
Analysis
As of Q2 2026, AppFolio, Inc. trades at 7.5x EV/Revenue versus Duolingo, Inc. at 5.8x. On the Rule of 40, AppFolio, Inc. scores 40.6 compared to Duolingo, Inc.'s 81.8, placing Duolingo, Inc. ahead in operating efficiency. Gross margins stand at AppFolio, Inc. 87% vs Duolingo, Inc. 73%.
Sector Context
Both companies operate in the Vertical SaaS sector. The median columns above show where each company stands relative to their peers.