Open source library tutorials vs LangX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Open source library tutorials
Learn popular open-source libraries for iOS development through interactive, self-paced tutorials. Master essential tools for building elegant and efficient iOS applications from scratch.
- 306 self-paced tutorials
- Learn GitHub open-source libraries
- Based on latest Xcode, Swift, and iOS
- Solve tricky iOS development functions
- Interactive learning format
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- 306 self-paced tutorials for you to learn hot open-source libraries on Github: CocoaPods、BonMot、PKHUD、DZNEmptyDataSet、Alamofire、Moya、PromiseKit、Socket、Kingfisher、SnapKit、RxSwift、Lottie、Hero、Theme、GPUImage、Realm... - Based on the new Xcode + new Swift + new iOS - Learn the powerful open-source libraries for iOS development from scratch. - Help you quickly and elegantly solve the tricky functions in iOS development! [Products] Interactive Tutorials for iOS Programming https://itunes.apple.com/us/app/id1063100471 Interactive Tutorials for Photoshop & Illustrator & Photoshop Script https://itunes.apple.com/us/app/id794405356 [Help? Comments? Suggestions? Contact us] Email:tapinfinity@gmail.com
LangX
Connect with native speakers for authentic language practice through real conversations. This app offers features like message correction, built-in translation, and voice/video calls. Earn rewards and track progress with gamified elements.
- Native speaker matching
- Real-time message correction
- Integrated translation tool
- Voice and video calls
- AI-powered chat assistant (Copilot)
- Gamified learning with streaks and tokens
- Flashcard-style review (Echo cards)
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LangX matches you with people who speak the language you're learning and are learning the language you speak. No lessons, no homework — just real conversations with someone who needs exactly what you can offer. A new look. Home opens on what matters first: who is waiting for your reply, your streak and the Echo cards that are ready. Below them, four cards open Venus, Copilot, LangX Token and Transparency. Then Chats, Echo, People and Me. Matched both ways. You only see people whose languages fit yours in both directions, so every conversation has something in it for both of you. Correct each other. Tap any message to suggest a better way to say it. Corrections are unlimited for everyone, on every plan — teaching is the whole point. Translation when you're stuck. Built in, so you don't leave the chat. Voice and video calls. Call the people you chat with, free on every plan. A call rings like a phone call even when the app is closed, and one switch turns calls off. A camera in every chat. Tap for a photo, hold for a video, and pick a filter. Send it as View once, let them replay it once, or keep it in the chat. Echo keeps what you learn. Press and hold a message to add it to Echo, and it comes back for review: tomorrow, in three days, then in a week. Copilot, in beta. An AI helper in your chats: check a sentence before you send it, see how to say something in the language you're learning, get a message explained, or ask for reply ideas. Nothing is sent unless you send it. Copilot is open to every account: a few answers a day on the free plan, more with Pro. Meet Venus. LangX's cat has a short video for your streak days, and every day you reach stays open to watch again. Her stickers are free for everyone: use them in any chat, or add them to WhatsApp. A reason to come back. Keep a daily streak, earn tokens for talking and teaching, collect badges, see where you land on the weekly, monthly, yearly and all-time boards, and spend your tokens on sticker packs and profile frames. Free to use, always. Reply to every message you receive with no limits, and correct as many as you like. Every day the free plan gives you 5 new conversations and 20 translations. Photo and voice messages, up to 500 a day, and 10 profile photos are the same on every plan. LangX Pro is one plan with everything: • Unlimited new conversations • Unlimited translations • Gender and city filters • See who viewed your profile • Incognito browsing • Nearby: partners close to you • Up to 5 languages you learn and 5 you speak • Send in their language: write in yours, and both arrive • Export your saved phrases • A boosted profile in Discover • Nine more app icons Your first yearly subscription starts with a free week. Or get Pro for free. Invite three friends who start talking on LangX and you get a month of Pro. A 7-day streak earns you a week of Pro, a 100-day streak a month, a 365-day streak three. Have a gift code? Enter it on the Plans screen. LangX is open source (BSD-3) and can be self-hosted. Its Transparency page shows the public numbers: members, messages and the languages people learn. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms & Conditions: https://langx.io/terms-conditions Privacy Policy: https://langx.io/privacy-policy
Screenshots
Verdict
Open source library tutorials and LangX both sit at 5.0 stars, but that hides the real split: 100% of LangX's written reviews are positive against 60% of Open source library tutorials's. LangX also leads on ads (none vs shown) and update cadence (every 2 days vs every 3 months). Open source library tutorials's advantage is iOS requirement (9.0 vs 16.4). On price, rating, ratings volume and in-app purchases 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. Open source library tutorials sells 4 one-off in-app purchases and LangX sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Open source library tutorials against 5.0 for LangX. Both are backed by a comparable volume of ratings — 6 and 11 respectively. Written reviews are what separate them: 60% of Open source library tutorials's written reviews are positive against 100% of LangX's.
Open source library tutorials ships an update every 3 months, LangX every 2 days. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.
| Parameter | Open source library tutorials | LangX |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) | 5.0 (11 ratings) |
| Positive reviews | 60.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 6 | 11 — better |
| Update frequency | Every 3 months | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 9.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 447 MB | 111 MB |
| Age rating | 4+ | 12+ |
| Developer | 发展 李 | New Chapter |
Customer experience
Open source library tutorials
LangX
In-app purchases
Open source library tutorials
- 第九章$5.99
- 第八章$5.99
- 第七章$5.99
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- 全部章节的所有课程$12.99
LangX
- LangX Pro Monthly$9.991 Month
- LangX Pro Monthly7 Days trial$9.991 Month
- LangX Pro Yearly7 Days trial2 variants$79.991 Year
Questions
Is Open source library tutorials free?
Is LangX free?
Which has better reviews, Open source library tutorials or LangX?
Do Open source library tutorials or LangX have ads?
Which is updated more often, Open source library tutorials or LangX?
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