Certly vs Echo Lang
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Certly
Prepare for AI Architect certification exams with AI-powered study tools. Practice with realistic simulations, detailed explanations, and smart review features. Master key domains and build confidence before test day.
- AI-powered prompt writing drills
- Study by specific AI domains
- Realistic exam simulations
- Detailed answer explanations
- Spaced repetition review
- Daily challenges and streaks
- Quick study mode
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Practice for all four AI certification exams in one app: Associate, Developer, Architect and Architect Professional. 920 questions, each filed under the domain it tests at the weight the official exam guide publishes. ▸ Pick Your Exam Choose the certification you're sitting and the app follows it: its domains, its weights, its exam length. Switch any time. Each exam keeps its own progress, streak and history. ▸ Practice Exams at Real Length 60 items for the Foundations exams, 63 for Architect Professional, scored 100 to 1000 against the 720 passing line. Multiple-choice and multiple-response items, graded on an exact match with no partial credit, the way the real exam scores them. Change an answer, go back, flag questions to revisit, or end early and score what you have. ▸ Projected Score, Weighted by Domain Your score appears after 20 answers, counts only the exam you're preparing for, and weighs each domain the way the real score report does. ▸ Missed Questions Come Back Get one wrong and it returns the next day. Get it right and it comes back after 3, then 7, then 14 days, until it sticks. ▸ Explanations That Teach Every question explains why the right answer is right and why each wrong one is wrong, naming each option by what it says instead of by a letter. ▸ Prompt Lab Prompt-writing drills graded instantly and offline. Spot the flaw in a weak prompt, build a strong one block by block, or write your own against a precision rubric. ▸ Ten Minutes or One Domain Run ten mixed questions on the way to work, or drill a single domain. ▸ Daily Challenge, Streaks and Achievements A new question every day, accuracy tracked per domain, and milestones as you go. HOW IT WORKS 1. Choose your certification 2. Study by domain, take a quick session, or run a prompt drill 3. Read the explanation on every answer 4. Take a full practice exam when your projected score clears 720 Works offline. Sign in only if you want your answers, practice exams and bookmarks synced across devices. Everything works without an account. Free to use. An optional one-time purchase removes ads. No subscription. Independent study tool. Not affiliated with the exam provider.
Echo Lang
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Echo Lang: Your Podcast-Style Language Learning Hub Tired of rote memorization and endless searching for the right audio resources? Echo Lang is designed for immersive, screen-free language acquisition. We solve the biggest hurdles in language learning by turning your fragmented time into a highly effective listening environment. Core Features: Screen-Free Listening for Fragmented Time Maximize your day without staring at a screen. Whether you are commuting, working out, or doing chores, Echo Lang provides a seamless podcast-like experience. Put your headphones on and effortlessly absorb a new language on the go. Real Context, Real Fluency Ditch useless flashcards. Memorizing isolated words doesn't build language intuition. Echo Lang immerses you in authentic materials—classic literature, movie dialogues, and famous speeches. Learn vocabulary in its true context and naturally develop a native-like sense of the language. No More Resource Hunting Stop "dumpster-diving" for audio files across the internet. Echo Lang offers a built-in, highly customizable listening lab. Take full control of your learning by adjusting playback speed, setting custom sentence loops, and toggling text display modes to perfectly match your proficiency level. Supported Languages: Learn English, Spanish, French, German, Chinese, Japanese, Korean, and Arabic.
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Verdict
The clearest difference is in-app purchases: Echo Lang at none against Certly's 1. Echo Lang also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Certly sells 1 one-off in-app purchase. Echo Lang asks for nothing beyond the download.
Certly ships an update every 2 months, Echo Lang every 3 weeks. Both last shipped on October 31, 2026.
| Parameter | Certly | Echo Lang |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 26.2 | 13.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Gabriel Pevide | 阳帝 李 |
In-app purchases
Certly
- Remove Ads$4.99
Echo Lang
No in-app purchases









