Polli vs TierReader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Polli
This app helps language learners advance beyond the basics by generating interactive stories on any topic. Users can tap on words for deeper insights and save them to their library. An optional upgrade unlocks unlimited creation, audio playback, and more.
- AI-generated interactive stories
- Tap-to-learn word definitions
- Save vocabulary to library
- Customizable story mood and style
- Natural-sounding audio playback (PRO)
- Unlimited content creation (PRO)
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Once you’ve learned the basics of a language, the next challenge is finding materials to reinforce what you know and expand your knowledge. Learners tend to hit a plateau and have trouble pushing their skills further. Polli solves this by allowing you to generate content on any topic in your language, controlling the mood, style, and grammar. The stories you create are interactive. Every word is tappable and savable to your Library. Anytime you’re confused about a word or expression, you can generate an insight to dive deeper into the usage. Upgrade to Polli PRO to get - Unlimited story creation - Unlimited grammar insights - Unlimited translations - Listen to your stories with high quality, natural sounding voices Sign up for a free trial to try out all the PRO features today! Polli currently offers Catalan, Chinese, Dutch, English, Finnish, French (FR/QC), German, Greek, Hungarian, Italian, Japanese, Korean, Polish, Portuguese (PT/BR), Romanian, Russian, Spanish (MX/EU), Swedish, Turkish, Ukrainian. More coming soon! Let us know which language you’d like to use with Polli. Privacy Policy: https://getpolli.com/privacy-policy Terms of Service: https://getpolli.com/terms-of-service
TierReader
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Read real stories in your target language — perfectly matched to your level, so you're never lost and never bored. TierReader's AI writes each short story just for you, then helps you turn what you read into vocabulary you actually remember. Now supporting English, Spanish, French, German, and Japanese. How it works: Pick your language and level, and TierReader generates a short story written exactly for you — always in your target language, never above your head. Tap any word for an instant translation, then lock it in with flashcards and quizzes after every session. Features: • AI-generated stories calibrated to your proficiency — from absolute beginner to advanced • Tap-to-translate with grammar notes to help you understand, not just decode • Spaced-repetition flashcards that resurface words right before you'd forget them • Multiple quiz modes: flashcards, multiple choice, fill-in-the-blank, and comprehension questions • A growing personal word bank that tracks what you know and what to study next • English, Spanish, French, German, and Japanese Who it's for: Whether you're working toward JLPT N4, CEFR B1, or just trying to stop relying on subtitles, TierReader gives you reading practice that matches where you are today — and grows with you as you improve. Download TierReader and read your first story today. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: Polli at none against TierReader's shown. On price, in-app purchases, device support and iOS requirement 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. Polli sells 3 in-app purchases, starting at $4.99 per 7 days and TierReader sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | Polli | TierReader |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 days | — |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 — better | 15.5 |
| Further details — not scored | ||
| Size | 65 MB | 83 MB |
| Age rating | 12+ | 4+ |
| Developer | AnApps, LLC | ROSEBERT ALTIANAS |
In-app purchases
Polli
- PRO Weekly$4.997 Days
- PRO Monthly7 Days trial$9.991 Month
- PRO Yearly14 Days trial$99.991 Year
TierReader
- Monthly$5.991 Month
- Annual7 Days trial$59.991 Year





