Comprehensive Stock Comparison
Compare Auddia Inc. (AUUD) vs Duolingo, Inc. (DUOL) Stock
Analyze side-by-side fundamentals, valuation, growth, and profitability to decide which stock is the better buy.
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Quick Verdict
| Category | Winner | Why |
|---|---|---|
| Stability / Safety | AUUD | Beta 0.72 vs DUOL's 1.52, lower leverage |
| Dividends | Tie | Neither pays a meaningful dividend |
| Momentum (1Y) | DUOL | -67.6% vs AUUD's -84.0% |
| Efficiency (ROA) | DUOL | 20.8% ROA vs AUUD's -163.8%, ROIC 40.8% vs -252.1% |
Who Each Stock Is For
Income & stability
Growth exposure
Long-term compounding (10Y)
Sleep-well-at-night portfolio
Defensive / Recession hedge
Business Model
What each company does and how it makes money
Auddia develops software for the audio and podcast markets, primarily through its Faidr app that offers commercial-free streaming radio. The company generates revenue from subscription fees for Faidr and its Vodacast interactive podcast platform — which includes content management tools for creators. Its competitive advantage lies in proprietary AI technology that removes commercials from live radio streams in real-time, creating a differentiated listening experience.
Duolingo operates a freemium language-learning platform that makes acquiring new languages accessible through gamified lessons. It generates revenue primarily through subscription fees for its premium Duolingo Super service — which removes ads and offers additional features — along with advertising and its English proficiency testing product. The company's key advantage is its massive user base and data-driven approach to optimizing engagement, creating network effects that make its platform increasingly effective for learners.
Revenue Breakdown by Segment
How each company's revenue is distributed across its business units
Financial Metrics Comparison
Side-by-side fundamentals across 2 stocks. BestLagging
Financial Scorecard
AUUD leads in 2 of 6 categories (Financial Metrics, Valuation Metrics). DUOL leads in 2 (Profitability & Efficiency, Total Returns). 1 tied.
Financial Metrics (TTM)
DUOL and AUUD operate at a comparable scale, with $1.0B and $0 in trailing revenue.
| Metric | AUUDAuddia Inc. | DUOLDuolingo, Inc. |
|---|---|---|
| RevenueTrailing 12 months | $0 | $1.0B |
| EBITDAEarnings before interest/tax | -$5M | $146M |
| Net IncomeAfter-tax profit | -$8M | $414M |
| Free Cash FlowCash after capex | -$6M | $377M |
| Gross MarginGross profit ÷ Revenue | — | +72.2% |
| Operating MarginEBIT ÷ Revenue | — | +13.1% |
| Net MarginNet income ÷ Revenue | — | +39.9% |
| FCF MarginFCF ÷ Revenue | — | +36.3% |
| Rev. Growth (YoY)Latest quarter vs prior year | — | +35.0% |
| EPS Growth (YoY)Latest quarter vs prior year | +38.1% | -100.0% |
Valuation Metrics
| Metric | AUUDAuddia Inc. | DUOLDuolingo, Inc. |
|---|---|---|
| Market CapShares × price | $2M | $4.7B |
| Enterprise ValueMkt cap + debt − cash | -$797,049 | $3.8B |
| Trailing P/EPrice ÷ TTM EPS | -0.01x | 13.32x |
| Forward P/EPrice ÷ next-FY EPS est. | — | 23.41x |
| PEG RatioP/E ÷ EPS growth rate | — | — |
| EV / EBITDAEnterprise value multiple | — | 27.79x |
| Price / SalesMarket cap ÷ Revenue | — | 4.54x |
| Price / BookPrice ÷ Book value/share | 0.03x | 3.50x |
| Price / FCFMarket cap ÷ FCF | — | 12.14x |
Profitability & Efficiency
DUOL delivers a 30.7% return on equity — every $100 of shareholder capital generates $31 in annual profit, vs $-190 for AUUD. AUUD carries lower financial leverage with a 0.02x debt-to-equity ratio, signaling a more conservative balance sheet compared to DUOL's 0.07x. On the Piotroski fundamental quality scale (0–9), DUOL scores 5/9 vs AUUD's 4/9, reflecting solid financial health.
| Metric | AUUDAuddia Inc. | DUOLDuolingo, Inc. |
|---|---|---|
| ROE (TTM)Return on equity | -189.9% | +30.7% |
| ROA (TTM)Return on assets | -163.8% | +20.8% |
| ROICReturn on invested capital | -2.5% | +40.8% |
| ROCEReturn on capital employed | -3.1% | +8.0% |
| Piotroski ScoreFundamental quality 0–9 | 4 | 5 |
| Debt / EquityFinancial leverage | 0.02x | 0.07x |
| Net DebtTotal debt minus cash | -$3M | -$943M |
| Cash & Equiv.Liquid assets | $3M | $1.0B |
| Total DebtShort + long-term debt | $81,493 | $94M |
| Interest CoverageEBIT ÷ Interest expense | -1379.52x | — |
Total Returns (with DRIP)
A $10,000 investment in DUOL five years ago would be worth $7,266 today (with dividends reinvested), compared to $6 for AUUD. Over the past 12 months, DUOL leads with a -67.6% total return vs AUUD's -84.0%. The 3-year compound annual growth rate (CAGR) favors DUOL at 3.6% vs AUUD's -88.2% — a key indicator of consistent wealth creation.
| Metric | AUUDAuddia Inc. | DUOLDuolingo, Inc. |
|---|---|---|
| YTD ReturnYear-to-date | -17.5% | -42.8% |
| 1-Year ReturnPast 12 months | -84.0% | -67.6% |
| 3-Year ReturnCumulative with dividends | -99.8% | +11.2% |
| 5-Year ReturnCumulative with dividends | -99.9% | -27.3% |
| 10-Year ReturnCumulative with dividends | -99.9% | -27.3% |
| CAGR (3Y)Annualised 3-year return | -88.2% | +3.6% |
Risk & Volatility
AUUD is the less volatile stock with a 0.72 beta — it tends to amplify market swings less than DUOL's 1.52 beta. A beta below 1.0 means the stock typically moves less than the S&P 500. DUOL currently trades 18.5% from its 52-week high vs AUUD's 11.5% drawdown — a narrower gap to the peak suggests stronger recent price momentum.
| Metric | AUUDAuddia Inc. | DUOLDuolingo, Inc. |
|---|---|---|
| Beta (5Y)Sensitivity to S&P 500 | 0.72x | 1.52x |
| 52-Week HighHighest price in past year | $7.29 | $544.93 |
| 52-Week LowLowest price in past year | $0.66 | $91.99 |
| % of 52W HighCurrent price vs 52-week peak | +11.5% | +18.5% |
| RSI (14)Momentum oscillator 0–100 | 45.9 | 40.8 |
| Avg Volume (50D)Average daily shares traded | 2.5M | 1.9M |
Analyst Outlook
| Metric | AUUDAuddia Inc. | DUOLDuolingo, Inc. |
|---|---|---|
| Analyst RatingConsensus buy/hold/sell | — | Hold |
| Price TargetConsensus 12-month target | — | $235.00 |
| # AnalystsCovering analysts | — | 21 |
| Dividend YieldAnnual dividend ÷ price | — | — |
| Dividend StreakConsecutive years of raises | — | — |
| Dividend / ShareAnnual DPS | — | — |
| Buyback YieldShare repurchases ÷ mkt cap | 0.0% | 0.0% |
Historical Charts
Charts are rendered on first load. Hover for details.
Chart 1Total Return — 5 Years (Rebased to 100)
| Stock | Aug 21 | Feb 26 | Change |
|---|---|---|---|
| Auddia Inc. (AUUD) | 100 | 0.06 | -99.9% |
| Duolingo, Inc. (DUOL) | 103.45 | 94.91 | -8.3% |
Duolingo, Inc. (DUOL) returned -27% over 5 years vs Auddia Inc. (AUUD)'s -100%.
Chart 2Revenue Growth — 10 Years
| Stock | 2017 | 2025 | Change |
|---|---|---|---|
| Auddia Inc. (AUUD) | $2M | $0.00 | -100.0% |
| Duolingo, Inc. (DUOL) | $71M | $1.0B | +1366.3% |
Chart 3Net Margin Trend — 10 Years
| Stock | 2017 | 2025 | Change |
|---|---|---|---|
| Auddia Inc. (AUUD) | -136.7% | -36.5% | +73.3% |
| Duolingo, Inc. (DUOL) | -19.2% | 39.9% | +308.3% |
Chart 4EPS Growth — 10 Years
| Stock | 2017 | 2025 | Change |
|---|---|---|---|
| Auddia Inc. (AUUD) | -0.02 | -57.69 | -288350.0% |
| Duolingo, Inc. (DUOL) | -0.41 | 7.58 | +1948.8% |
Chart 5Free Cash Flow — 5 Years
Auddia Inc. generated $-6M FCF in 2024 (+13% vs 2021). Duolingo, Inc. generated $388M FCF in 2025 (+12984% vs 2021).
AUUD vs DUOL: Frequently Asked Questions
7 questions · data-driven answers · updated daily
01Is AUUD or DUOL a better buy right now?
Duolingo, Inc. (DUOL) offers the better valuation at 13.3x trailing P/E (23.4x forward), making it the more compelling value choice. Analysts rate Duolingo, Inc. (DUOL) a "Hold" — based on 21 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.
02Which is the better long-term investment — AUUD or DUOL?
Over the past 5 years, Duolingo, Inc. (DUOL) delivered a total return of -27.3%, compared to -99.9% for Auddia Inc. (AUUD). A $10,000 investment in DUOL five years ago would be worth approximately $7K today (assuming dividends reinvested). Over 10 years, the gap is even starker: DUOL returned -27.3% versus AUUD's -99.9%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.
03Which is safer — AUUD or DUOL?
By beta (market sensitivity over 5 years), Auddia Inc. (AUUD) is the lower-risk stock at 0.72β versus Duolingo, Inc.'s 1.52β — meaning DUOL is approximately 112% more volatile than AUUD relative to the S&P 500. On balance sheet safety, Auddia Inc. (AUUD) carries a lower debt/equity ratio of 2% versus 7% for Duolingo, Inc. — giving it more financial flexibility in a downturn.
04Which has better profit margins — AUUD or DUOL?
Duolingo, Inc. (DUOL) is the more profitable company, earning 39.9% net margin versus 0.0% for Auddia Inc. — meaning it keeps 39.9% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: DUOL leads at 13.1% versus 0.0% for AUUD. At the gross margin level — before operating expenses — DUOL leads at 72.2%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.
05Which pays a better dividend — AUUD or DUOL?
None of the stocks in this comparison currently pay a material dividend. All are effectively zero-yield and should be held for capital appreciation rather than income.
06Is AUUD or DUOL better for a retirement portfolio?
For long-horizon retirement investors, Auddia Inc. (AUUD) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.72)). Duolingo, Inc. (DUOL) carries a higher beta of 1.52 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (AUUD: -99.9%, DUOL: -27.3%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.
07What are the main differences between AUUD and DUOL?
Both stocks operate in the Technology sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both. In terms of investment character: AUUD is a small-cap quality compounder stock; DUOL is a small-cap deep-value stock. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.
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