Comparison

900s vs linguaArbor

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

900s

Learn complex ideas through engaging, podcast-style audio episodes. Interact with AI to ask questions and explore topics in real time. Fits learning into short, 15-minute daily sessions.

Highlights
  • Podcast-style learning episodes
  • 15-minute daily learning sessions
  • AI-powered interactive Q&A
  • Curated content on various topics
  • Personalized library and progress tracking
  • Offline downloads with premium
Features
Read full description

Meet 900s โ€“ the smartest way to learn in just 15 minutes a day. 900s turns the most relevant content into engaging, podcast-style episodes that fit perfectly into your 10-20 minute focus window. Tap play and dive into professionally narrated, 15-minute (900 seconds) chapters that make complex ideas stick. When curiosity strikes, simply hit the microphone button to start a live AI conversation with the book: ask questions, request clarifications, or explore related topics in real time โ€“ it feels like chatting with the author. Key features โ€ข Discover curated book episodes on technology, business, science, and more โ€ข Search by keyword or browse by genre to find your next listen fast โ€ข Mini player with 15-sec skip/back, background audio, and quick resume โ€ข Real-time Interactive Audio Mode powered by AI & WebRTC โ€ข Personal Library with Continue Listening & Finished lists โ€ข Optional Premium upgrade: unlimited listening, ad-free, offline downloads Spend just 900 seconds a day (1 % of your time) and accumulate 90+ hours of deep learning each year. 900s makes learning as effortless as a podcast and as powerful as a tutor. Download now and start your 15-minute learning journey! Terms of Use: https://www.900s.app/legal#terms

About

linguaArbor

Features
Read full description

linguaArbor helps you actually learn a language โ€” with a clear, structured path and natural pronunciation spoken aloud for every word and sentence. Pick from SIX languages and learn from the one you already know: โ€ข English โ€ข Spanish โ€ข French โ€ข German โ€ข Italian โ€ข Portuguese A REAL COURSE, NOT RANDOM LESSONS Your path follows the official CEFR framework: A1 โ†’ A2 โ†’ B1 โ€” the same standard used by schools and exams across Europe. A short placement test drops you in at exactly the right spot, so you never start from zero if you already know the basics. HEAR EVERY WORD OUT LOUD Every word and sentence is read aloud with natural pronunciation using your device's built-in voices, so you pick up the right sound from day one. Tap any item to hear it again as often as you like. PRACTICE THAT STICKS โ€ข Multiple choice and image matching to build vocabulary fast โ€ข Sentence building with a word bank to lock in grammar โ€ข Listening exercises to train your ear โ€ข Pair matching to fix meaning in memory โ€ข Speak-aloud repetition with speech recognition to practice your pronunciation LEARN AT YOUR OWN PACE โ€” NO GUILT No aggressive streaks and no guilt-trip reminders. Practice whenever it suits you โ€” five minutes or fifty. Track your real progress across vocabulary, grammar, and listening, and watch it grow over time. A FAIR, SIMPLE PRICE Everything is FREE: all 6 languages, all audio, and all A1โ€“B1 content. We're supported by ads. Want more? Premium gives you: โ€ข A completely ad-free experience โ€ข Unlimited energy (the "leaves") โ€” practice as much as you want, whenever you want Just โ‚ฌ4.99/month or โ‚ฌ24.99/year. No lifetime traps, no fake discounts. Cancel anytime. Want to go further? Our sister app linguaProfunda continues the journey at the advanced levels B2, C1, and C2. Grow your language, leaf by leaf. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

900s4 screens
linguaArbor4 screens

Verdict

The call

The clearest difference is ads: 900s at none against linguaArbor's shown. 900s also leads on update cadence (weekly vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. 900s sells 4 in-app purchases, starting at $0.99 per month and linguaArbor sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

900s ships an update weekly, linguaArbor monthly. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.

Scorecard2 real differences ยท 6 level
900s versus linguaArbor: the parameters behind the verdict, then further details
Parameter900slinguaArbor
PriceFreeFree
Positive reviews75.0% of reviewsโ€”
Update frequencyWeekly โ€” betterMonthly
AdsNo โ€” betterYes
In-app purchasesYesYes
MonetizationFreemiumโ€”
DevicesiPhoneiPhone, iPad โ€” better
Requires iOS16.416.0 โ€” better
Further details โ€” not scored
Size78 MB263 MB
Age rating4+4+
DeveloperUnit U+2467 GmbHPhivolt Srls

In-app purchases

4 purchases

900s

Subscriptions4
  • Basic โ€“ monatlich7 Days trial$0.991 Month
  • Plus โ€“ monatlich7 Days trial$2.991 Month
  • Ultimate$3.991 Month
Show 1 more
  • BILDplus + 900s1 Month trial$6.991 Month
2 purchases

linguaArbor

Subscriptions2
  • Premium Monthly$3.991 Month
  • Premium Yearly$22.991 Year

Questions

Is 900s free?
900s is free to download, with in-app purchases available.
Is linguaArbor free?
linguaArbor is free to download, with in-app purchases available.
Do 900s or linguaArbor have ads?
linguaArbor shows ads; 900s does not.
Which is updated more often, 900s or linguaArbor?
900s ships an update weekly, and linguaArbor monthly. Most recently, 900s was updated on September 21, 2026 and linguaArbor on September 17, 2026.

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