Langtern Chinese vs QuiddityML
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Langtern Chinese
This app aids in learning Chinese by providing real-time assistance while browsing the web, watching videos, or reading documents. It offers a convenient way to look up unfamiliar characters and words in context, enhancing comprehension and vocabulary acquisition.
- Web page translation
- Video subtitle assistance
- Ebook and PDF reader support
- In-context word lookup
- Vocabulary enhancement
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Langtern helps you learn Chinese by assisting you when navigating Chinese web pages, watching videos in Chinese, or reading ebooks/PDFs in Chinese. The terms of service can be found at: https://langtern.com/public/doc/en/tos.html
QuiddityML
Master machine learning and AI with interactive coding exercises and spaced repetition. This app offers structured learning paths, practical projects, and interview preparation to build deep understanding and practical skills.
- Structured AI learning tracks
- Hands-on coding exercises
- Spaced repetition for retention
- Beginner-friendly explanations
- Interview preparation
- Real-world projects
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QuiddityML is for anyone who wants to truly understand machine learning and AI, not just watch videos and forget everything a week later. Short daily lessons and hands-on practice that make it stick. A Clear Roadmap Every track lays out every concept you need and the order to learn them in, so you always know what's ahead and where your gaps are. Follow the curriculum or jump straight to any concept. Short Lessons Each concept is a few slides you can finish in a busy day, with clear analogies, diagrams, real math, and worked code, instead of a 40-hour course you never finish. 11 Types Of Hands-On Exercises Reading is passive. QuiddityML makes you do the work: fill in implementations, spot bugs, trace tensors, write code from scratch. Progress through 4 tiers of difficulty with feedback on every answer. Spaced Repetition Built In Your review schedule is built from how you do in the exercises. What you struggle with comes back sooner, what you ace stays away, so you don't forget last week's concept. Math In Context, Not Up Front The Math track covers only the basics you need to start. The ML lessons teach the rest where it comes up, so you see what each equation is for. Everything In One Place Python, PyTorch, math for ML, ML foundations, NLP, computer vision, and more, in one curriculum that doesn't assume something different in every course. New tracks and concepts are added all the time. Interview Questions And Projects Every unit ends with interview questions and portfolio projects tied to what you just learned, so you walk into your next interview ready. Free: all Python, PyTorch, and Math units plus Unit 1 of every other track. Pro unlocks everything. Learn it once, then keep it. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: QuiddityML at 5.0 against Langtern Chinese's 4.2. QuiddityML also leads on update cadence (every 5 days vs monthly). On price, review sentiment, ratings volume and ads 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. Langtern Chinese sells 8 in-app purchases, starting at $2.99 per month and QuiddityML sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.
QuiddityML holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 6 and 6 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Langtern Chinese ships an update monthly, QuiddityML every 5 days. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.
| Parameter | Langtern Chinese | QuiddityML |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (6 ratings) | 5.0 (6 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 6 | 6 |
| Update frequency | Monthly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 71 MB | 51 MB |
| Age rating | 17+ | 4+ |
| Developer | Noe Casas | QuiddityML LLC |
Customer experience
Langtern Chinese
QuiddityML
In-app purchases
Langtern Chinese
- Student Plus$2.991 Month
- Teacher Mini$4.991 Month
- Teacher Premium$7.991 Month
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- Teacher Max$12.991 Month
- Student Plus (yearly)$23.491 Year
- Teacher Mini$49.991 Year
- Teacher Premium$79.991 Year
- Teacher Max$129.991 Year
QuiddityML
- QuiddityML Pro Monthly$19.991 Month
- QuiddityML Pro Yearly$149.991 Year
Questions
Is Langtern Chinese free?
Is QuiddityML free?
Which has better reviews, Langtern Chinese or QuiddityML?
Do Langtern Chinese or QuiddityML have ads?
Which is updated more often, Langtern Chinese or QuiddityML?
Other comparisons
