BeFreed
    Categories>Career & Business>Duolingo实验史:从失败到成功的产品进化

    Duolingo实验史:从失败到成功的产品进化

    18 分钟
    |
    |
    2026年2月19日
    Career & BusinessTechnologyEntrepreneurship

    揭秘Duolingo如何通过无数次A/B测试,从差点毁掉自己的功能失误中学习,最终打造出让全球用户上瘾的语言学习应用。

    Duolingo实验史:从失败到成功的产品进化

    Duolingo实验史:从失败到成功的产品进化最佳语录

    “

    如果某些东西不起作用,这并不意味着它是一个坏想法,它可能只是一个需要改进的早期想法。Duolingo将失败的功能视为草稿:尝试它,测试它,拆除它,重新构建它,做得更好。

    ”

    此音频课程由 BeFreed 社区成员创建

    输入问题

    duolingo app的演进史,哪些功能被砍掉了?他们测试了什么?哪些留下了

    主持声音
    Niaplay
    Milesplay
    知识来源
    Hooked
    / B Testing
    Product Operations
    Build
    Start at the End
    Fluent forever

    发现更多

    How to build a great language learning app
    学习计划

    How to build a great language learning app

    Building a successful language app requires a unique blend of pedagogical science, psychological triggers, and high-performance product design. This plan is essential for developers, product managers, and educators looking to transform language learning into a scalable, high-retention digital experience.

    5 h 8 m•4 章节
    Gamified Spanish Verb Tense Learning Tools
    学习计划

    Gamified Spanish Verb Tense Learning Tools

    This plan bridges the gap between linguistic mastery and digital engagement, making it essential for educators and developers. It is ideal for those looking to transform dry grammar drills into immersive, high-impact educational games.

    4 h 9 m•4 章节
    I want to learn how to build a viral product
    学习计划

    I want to learn how to build a viral product

    This learning plan is essential for entrepreneurs and product managers who want to move beyond luck and use engineering principles to drive growth. It bridges the gap between psychological science and practical product development to help builders create self-sustaining viral engines.

    3 h 4 m•4 章节
    Master Consular App Growth via Psychology
    学习计划

    Master Consular App Growth via Psychology

    This learning plan bridges the gap between behavioral science and digital product scaling. It is essential for app developers, growth marketers, and product managers who want to build addictive, self-scaling mobile experiences.

    5 h 15 m•4 章节
    Design Your Spanish Immersion System
    学习计划

    Design Your Spanish Immersion System

    This plan is essential for intermediate learners who feel stuck and need a structured approach to daily Spanish usage. It benefits busy professionals and students by transforming their existing environment into a powerful engine for natural language acquisition.

    1 h 12 m•3 章节
    爆款应用增长与心理拆解
    学习计划

    爆款应用增长与心理拆解

    在存量竞争时代,理解用户情绪价值与AI技术驱动的流量重构是产品突围的关键。本课程适合希望通过心理拆解与算法创新实现长效增长的产品经理、运营专家及创业者。

    48 m•3 章节
    從假努力到真改變
    学习计划

    從假努力到真改變

    這套學習計畫專為受困於無效忙碌的領導者與職場人士設計,旨在破除「假性努力」的陷阱。透過數據驅動的測試與激勵結構的轉型,協助個人與團隊從單純執行任務轉向達成實質目標。

    2 h 3 m•3 章节
    Viral lyric-based emotional messaging app UI
    学习计划

    Viral lyric-based emotional messaging app UI

    This learning plan is essential for designers and product managers looking to break into the competitive social media space by leveraging emotional resonance. It combines high-level UI/UX fundamentals with the specific mechanics of viral growth and music-driven storytelling.

    5 h 40 m•4 章节

    由哥伦比亚大学校友在旧金山创建

    BeFreed 汇聚了全球超过 1,000,000 求知若渴的学习者
    查看更多网络上关于 BeFreed 的讨论

    "Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

    @Moemenn
    platform
    star
    star
    star
    star
    star

    "I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

    @Chloe, Solo founder, LA
    platform
    comments
    12
    likes
    117

    "Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

    @Raaaaaachelw
    platform
    star
    star
    star
    star
    star

    "Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

    @Matt, YC alum
    platform
    comments
    12
    likes
    108

    "Reading used to feel like a chore. Now it’s just part of my lifestyle."

    @Erin, Investment Banking Associate , NYC
    platform
    comments
    254
    likes
    17

    "Feels effortless compared to reading. I’ve finished 6 books this month already."

    @djmikemoore
    platform
    star
    star
    star
    star
    star

    "BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

    @Pitiful
    platform
    comments
    96
    likes
    4.5K

    "BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

    @SofiaP
    platform
    star
    star
    star
    star
    star

    "BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

    @Jaded_Falcon
    platform
    comments
    201
    thumbsUp
    16

    "It is great for me to learn something from the book without reading it."

    @OojasSalunke
    platform
    star
    star
    star
    star
    star

    "The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

    @Leo, Law Student, UPenn
    platform
    comments
    37
    likes
    483

    "Makes me feel smarter every time before going to work"

    @Cashflowbubu
    platform
    star
    star
    star
    star
    star

    由哥伦比亚大学校友在旧金山创建

    BeFreed 汇聚了全球超过 1,000,000 求知若渴的学习者
    查看更多网络上关于 BeFreed 的讨论

    "Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

    @Moemenn
    platform
    star
    star
    star
    star
    star

    "I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

    @Chloe, Solo founder, LA
    platform
    comments
    12
    likes
    117

    "Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

    @Raaaaaachelw
    platform
    star
    star
    star
    star
    star

    "Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

    @Matt, YC alum
    platform
    comments
    12
    likes
    108

    "Reading used to feel like a chore. Now it’s just part of my lifestyle."

    @Erin, Investment Banking Associate , NYC
    platform
    comments
    254
    likes
    17

    "Feels effortless compared to reading. I’ve finished 6 books this month already."

    @djmikemoore
    platform
    star
    star
    star
    star
    star

    "BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

    @Pitiful
    platform
    comments
    96
    likes
    4.5K

    "BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

    @SofiaP
    platform
    star
    star
    star
    star
    star

    "BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

    @Jaded_Falcon
    platform
    comments
    201
    thumbsUp
    16

    "It is great for me to learn something from the book without reading it."

    @OojasSalunke
    platform
    star
    star
    star
    star
    star

    "The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

    @Leo, Law Student, UPenn
    platform
    comments
    37
    likes
    483

    "Makes me feel smarter every time before going to work"

    @Cashflowbubu
    platform
    star
    star
    star
    star
    star

    "Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

    @Moemenn
    platform
    star
    star
    star
    star
    star

    "I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

    @Chloe, Solo founder, LA
    platform
    comments
    12
    likes
    117

    "Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

    @Raaaaaachelw
    platform
    star
    star
    star
    star
    star

    "Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

    @Matt, YC alum
    platform
    comments
    12
    likes
    108

    "Reading used to feel like a chore. Now it’s just part of my lifestyle."

    @Erin, Investment Banking Associate , NYC
    platform
    comments
    254
    likes
    17

    "Feels effortless compared to reading. I’ve finished 6 books this month already."

    @djmikemoore
    platform
    star
    star
    star
    star
    star

    "BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

    @Pitiful
    platform
    comments
    96
    likes
    4.5K

    "BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

    @SofiaP
    platform
    star
    star
    star
    star
    star

    "BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

    @Jaded_Falcon
    platform
    comments
    201
    thumbsUp
    16

    "It is great for me to learn something from the book without reading it."

    @OojasSalunke
    platform
    star
    star
    star
    star
    star

    "The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

    @Leo, Law Student, UPenn
    platform
    comments
    37
    likes
    483

    "Makes me feel smarter every time before going to work"

    @Cashflowbubu
    platform
    star
    star
    star
    star
    star

    "Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

    @Moemenn
    platform
    star
    star
    star
    star
    star

    "I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

    @Chloe, Solo founder, LA
    platform
    comments
    12
    likes
    117

    "Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

    @Raaaaaachelw
    platform
    star
    star
    star
    star
    star

    "Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

    @Matt, YC alum
    platform
    comments
    12
    likes
    108

    "Reading used to feel like a chore. Now it’s just part of my lifestyle."

    @Erin, Investment Banking Associate , NYC
    platform
    comments
    254
    likes
    17

    "Feels effortless compared to reading. I’ve finished 6 books this month already."

    @djmikemoore
    platform
    star
    star
    star
    star
    star

    "BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

    @Pitiful
    platform
    comments
    96
    likes
    4.5K

    "BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

    @SofiaP
    platform
    star
    star
    star
    star
    star

    "BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

    @Jaded_Falcon
    platform
    comments
    201
    thumbsUp
    16

    "It is great for me to learn something from the book without reading it."

    @OojasSalunke
    platform
    star
    star
    star
    star
    star

    "The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

    @Leo, Law Student, UPenn
    platform
    comments
    37
    likes
    483

    "Makes me feel smarter every time before going to work"

    @Cashflowbubu
    platform
    star
    star
    star
    star
    star
    1.5K Ratings4.7
    开启你的学习之旅,就是现在
    BeFreed App
    BeFreed

    个性化学习,无所不能

    DiscordLinkedIn
    精选书籍摘要
    Crucial ConversationsThe Perfect MarriageInto the WildNever Split the DifferenceAttachedGood to GreatSay Nothing
    热门分类
    Self HelpCommunication SkillRelationshipMindfulnessPhilosophyInspirationProductivity
    名人书单
    Elon MuskCharlie KirkBill GatesSteve JobsAndrew HubermanJoe RoganJordan Peterson
    获奖作品
    Pulitzer PrizeNational Book AwardGoodreads Choice AwardsNobel Prize in LiteratureNew York TimesCaldecott MedalNebula Award
    精选主题
    ManagementAmerican HistoryWarTradingStoicismAnxietySex
    年度最佳书籍
    2025 Best Non Fiction Books2024 Best Non Fiction Books2023 Best Non Fiction Books
    精选作者
    Chimamanda Ngozi AdichieGeorge OrwellO. J. SimpsonBarbara O'NeillWinston ChurchillCharlie Kirk
    BeFreed 与其他应用对比
    BeFreed vs. Other Book Summary AppsBeFreed vs. ElevenReaderBeFreed vs. ReadwiseBeFreed vs. Anki
    学习工具
    Knowledge VisualizerAI Podcast Generator
    更多信息
    关于我们arrow
    定价arrow
    常见问题arrow
    博客arrow
    招聘arrow
    合作伙伴arrow
    大使计划arrow
    目录arrow
    BeFreed
    Try now
    © 2026 BeFreed
    使用条款隐私政策
    BeFreed

    个性化学习,无所不能

    DiscordLinkedIn
    精选书籍摘要
    Crucial ConversationsThe Perfect MarriageInto the WildNever Split the DifferenceAttachedGood to GreatSay Nothing
    热门分类
    Self HelpCommunication SkillRelationshipMindfulnessPhilosophyInspirationProductivity
    名人书单
    Elon MuskCharlie KirkBill GatesSteve JobsAndrew HubermanJoe RoganJordan Peterson
    获奖作品
    Pulitzer PrizeNational Book AwardGoodreads Choice AwardsNobel Prize in LiteratureNew York TimesCaldecott MedalNebula Award
    精选主题
    ManagementAmerican HistoryWarTradingStoicismAnxietySex
    年度最佳书籍
    2025 Best Non Fiction Books2024 Best Non Fiction Books2023 Best Non Fiction Books
    学习工具
    Knowledge VisualizerAI Podcast Generator
    精选作者
    Chimamanda Ngozi AdichieGeorge OrwellO. J. SimpsonBarbara O'NeillWinston ChurchillCharlie Kirk
    BeFreed 与其他应用对比
    BeFreed vs. Other Book Summary AppsBeFreed vs. ElevenReaderBeFreed vs. ReadwiseBeFreed vs. Anki
    更多信息
    关于我们arrow
    定价arrow
    常见问题arrow
    博客arrow
    招聘arrow
    合作伙伴arrow
    大使计划arrow
    目录arrow
    BeFreed
    Try now
    © 2026 BeFreed
    使用条款隐私政策

    核心要点

    1

    Duolingo差点毁掉自己的功能

    0:00
    0:06
    0:13
    0:26
    0:34
    0:50
    2

    实验驱动的产品哲学

    1:05
    1:15
    1:22
    1:39
    1:44
    1:58
    2:00
    2:17
    2:26
    2:40
    3

    失败的借鉴与成功的转化

    2:52
    3:01
    3:12
    3:15
    3:30
    3:35
    3:56
    4:00
    4:12
    4:16
    4:28
    4:31
    4:49
    4:56
    4

    连续天数的魔力

    5:10
    5:17
    5:27
    5:30
    5:42
    5:43
    5:57
    6:12
    6:19
    6:32
    6:32
    6:45
    7:01
    7:04
    7:16
    7:22
    5

    数据模型的突破

    7:36
    7:44
    7:57
    8:00
    8:15
    8:30
    8:33
    8:45
    8:59
    9:04
    9:17
    9:18
    9:31
    6

    功能演化的智慧

    9:48
    9:56
    10:02
    10:03
    10:16
    10:29
    10:31
    10:52
    10:53
    11:06
    11:17
    11:19
    11:35
    11:38
    11:59
    7

    实用的产品实验指南

    12:13
    12:22
    12:34
    12:37
    12:52
    12:55
    13:10
    13:17
    13:31
    13:35
    13:48
    13:55
    14:07
    14:11
    14:27
    14:40
    8

    从实验中学到的永恒教训

    14:48
    14:55
    15:08
    15:16
    15:28
    15:36
    15:53
    16:01
    16:12
    16:23
    16:38
    16:49
    17:01
    17:13
    17:24
    17:39
    17:47
    17:59
    18:09

    相似内容

    The Science of A/B Testing 书籍封面
    A/B Testing — Statistical Modelling for Data ScienceA/B Testing - A complete guide to statistical testing | Towards Data ScienceHow to choose the right A/B test | ABtesting.toolsA/B Testing Methodology: Statistical | Digital Codex
    5 sources
    The Science of A/B Testing
    Guessing what customers want is a gamble. Learn how to use statistical discipline and proper sample sizes to turn raw data into reliable business growth.
    19 min
    A/B testing for marketing: why your gut is wrong 书籍封面
    / B TestingYou Should Test ThatROI in MarketingHow Brands Grow
    23 sources
    A/B testing for marketing: why your gut is wrong
    Stop chasing random noise in your campaign data. Learn how to run valid experiments on landing pages and emails to find what actually drives results.
    22 min
    Language Learning: Beyond the Streak 书籍封面
    10 Language Learning Methods Ranked by Science — LearnablesHow to Study a Foreign Language: Science-Backed Methods That Actually Work – AthenifyLearning techniques for Language Learning as an adult - Cognition TodayThe Best Language Learning Apps in 2026 (Honest Review) — Learnables
    7 sources
    Language Learning: Beyond the Streak
    Struggling to speak despite a long app streak? Learn how science-backed methods like comprehensible input and stories help you achieve real fluency.
    23 min
    The Language Learning Truth 书籍封面
    Fluent In 3 MonthsFluent ForeverThe LinguistThe Language Instinct
    14 sources
    The Language Learning Truth
    Discover why 30-day fluency promises fail and what actually works for language mastery, based on science and polyglot experience. Input before output is key to sustainable progress.
    12 min
    English Learning Revolution: From Myths to Mastery 书籍封面
    source 15 Popular ESL Teaching Methods Every Teacher Should Knowsource 3Multi-Level ESL classes: Teaching strategies - EFL Magazine
    6 sources
    English Learning Revolution: From Myths to Mastery
    Discover game-changing strategies for learning English, from debunking the 'language gene' myth to practical classroom techniques. Explore how English became a global phenomenon and unlock proven methods for rapid fluency.
    19 min
    Language Evolution Through Time 书籍封面
    Words on the MoveNine Nasty WordsThe Mother TongueThe Fourth Turning is Here
    18 sources
    Language Evolution Through Time
    Explore diachronic linguistics—how languages transform across history. From Old English to modern speech patterns, discover the fascinating mechanisms, social forces, and detective work behind language's continuous evolution.
    21 min
    AI-Powered Spanish Immersion 书籍封面
    Fluent In 3 MonthsFluent ForeverTim Ferriss's Learning Revolution: Master Any Skill FasterLearn Python in One Day and Learn It Well
    15 sources
    AI-Powered Spanish Immersion
    Learn how to combine AI tools to create personalized Spanish stories, dialogues, and audio lessons tailored to your interests and level, transforming your language learning journey.
    28 min
    Language Fluency: The Polyglot Playbook 书籍封面
    How Polyglots Learn Languages: 7 Polyglot Secrets for Everyday Learners - MosaLingua17 Unconventional Language Learning Methods That Actually ...Language Shadowing: The Complete Guide to This Powerful Learning MethodStealth Learning: The Fast, Easy Way to Learn a Language
    7 sources
    Language Fluency: The Polyglot Playbook
    Struggling with dry grammar and slow progress? Discover how 'brain soaking' and stealth learning methods can help you speak a new language naturally.
    25 min