Techtalk vs Cosmo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Techtalk
Practice technical interviews with an AI interviewer, receiving detailed feedback. Learn programming concepts through video summaries and generated questions. Review mistakes with error notes and master topic-specific interview questions.
- AI mock chat interviews
- Video content programming learning
- Error review notes
- Topic-based interview questions
- Personalized feedback
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- Mock Chat Interviews with AI Choose from a variety of interview topics and conduct mock interviews just like in a real interview. Get effective preparation with detailed and friendly feedback from the AI interviewer! - Video Content-Based Programming Learning Enhance your learning experience with concise summaries of essential programming concepts extracted from video content. This feature automatically generates tailored interview questions, making it easier than ever to grasp key topics and excel in your interviews! - Error Review Notes Review incorrect answers from chat interviews using the error review notes feature! - Topic-Based Interview Learning Key interview questions frequently asked are categorized by topic. Learn and master interview questions quickly and effectively! [Optional Permissions] Files & Media/Camera: Needed if you want to change your profile image. You can still use the app’s features without granting these permissions.
Cosmo
This app offers hands-on, practice-based lessons to build in-demand skills in areas like GenAI, business, and tech. It acts as a personal AI tutor, adapting to your learning pace and providing instant help on any topic. Earn shareable certificates and skill badges to advance your career.
- Personalized AI tutor
- Hands-on, practice-based lessons
- Learn GenAI, business, tech, and more
- Earn skill badges and certificates
- Instant help on any topic
- 200+ career-building skills
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Build real skills in just minutes a day. No videos. Just doing. Cosmo is your personal AI tutor, always ready with hands-on lessons that adapt to you. Whether you're between classes, commuting, or on a break, you’ll make real progress in GenAI, business, tech, and more. Built by CodeSignal, the AI platform trusted by over 3,000 top employers for hiring, including Google, Meta, Zoom, Netflix, TikTok, and Anthropic. Loved by over 1 million learners who build and prove their skills with CodeSignal. Why Cosmo • Cosmo, your AI tutor, adapts to you and guides you on your journey so you can learn faster • Fun, practice-based lessons that keep you engaged • Master the most in-demand skills to grow your career • Earn shareable certificates and skill badges • Take full courses or get instant help on any topic Every course is free. Learn GenAI, business, marketing, sales, finance, accounting, product management, project management, leadership, communication, emotional intelligence, Python, JavaScript, Go, Swift, Kotlin, Rust, web development, cloud, SQL, data science, analytics, machine learning, data engineering, personal finance, focus, decision making, critical thinking, public speaking, habit formation, and more. Explore 200+ career-building skills • GenAI: Practice prompts and apply ChatGPT at work • Finance: Understand money, markets, and valuation • Marketing: Learn digital ads, branding, SEO, and strategy • Coding: Learn Python, JavaScript, and more through practice • Data: Build skills in SQL, machine learning, and analytics • Leadership: Grow communication and strategic thinking • Personal Growth: Build habits, confidence, and clarity • Startups: Learn how to launch your idea into the world If you like Cosmo, try Cosmo+ to learn faster with unlimited energy. Learn on the web at: https://codesignal.com/learn Send feedback to: support@codesignal.com Privacy Policy: https://codesignal.com/privacy Terms of Use: https://codesignal.com/terms/
Screenshots
Verdict
The clearest difference is in-app purchases: Techtalk at none against Cosmo's 4. Techtalk also leads on rating (5.0 vs 4.8) and iOS requirement (14.0 vs 16.4). Cosmo's advantage is review sentiment (84% vs 50%) and ratings volume (810 vs 1). On price, update cadence, ads and device support 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. Cosmo sells 4 in-app purchases, starting at $12.99 per month. Techtalk asks for nothing beyond the download.
Techtalk holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Cosmo has 810 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of Techtalk's written reviews are positive against 84% of Cosmo's, so the app with the better star average is not the one people write more warmly about.
Techtalk ships an update every 2 weeks, Cosmo fortnightly. The most recent releases landed on September 30, 2026 and October 17, 2026 respectively.
| Parameter | Techtalk | Cosmo |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.8 (810 ratings) |
| Positive reviews | 50.0% of reviews | 83.9% of reviews — better |
| Number of ratings | 1 | 810 — better |
| Update frequency | Every 2 weeks — better | Fortnightly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 71 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | HaeJoo Lee | CodeSignal |
Customer experience
Techtalk
Cosmo
Bugs and requests
Techtalk
Not enough reviews yet to summarise bugs or requests.
Cosmo
Requested features
1 request- Ability to upgrade/customize Cosmo's outfit and spaceship
In-app purchases
Techtalk
No in-app purchases
Cosmo
- Unlimited Access7 Days trial$12.991 Month
- Unlimited Access7 Days trial$24.991 Month
- Unlimited Access7 Days trial$78.001 Year
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- Unlimited Access7 Days trial$149.991 Year









