N3 vs Froggy Flex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
N3
Master JLPT N3 grammar with over 300 practice questions and detailed explanations. This app covers all required sentence patterns for the N3 reading section, organized for easy understanding. Perfect for on-the-go learning.
- JLPT N3 grammar explanations
- Over 300 practice questions
- Detailed explanations for each pattern
- Covers all N3 reading sentence patterns
- One-handed operation
- Vocabulary marking and reinforcement
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1. Supports iPhone 4 and above, as well as all iPad and iPad Pro models. 2. The grammatical explanations are aligned with the new JLPT N3 proficiency test scope, including various sentence patterns, and fully comply with the new N3 exam guidelines. 3. Contains over 300 grammar practice questions, allowing learners to easily master the material in their spare time. 4. Includes detailed explanations. Through repeated practice with various question types, learners can achieve complete mastery. Whenever they encounter difficulties, they can always review the explanations to fully grasp the meaning and usage of each grammar pattern. 5. Compiles all sentence patterns required for the JLPT N3 reading section, organized in a simple and easy‑to‑understand way, with detailed explanations of each pattern. No professional grammar terminology beyond the learning scope is used. The app can be comfortably operated with one hand, making learning more efficient. 6. When encountering difficult or hard‑to‑memorize vocabulary, users can mark words with three different types of symbols. By tapping on any symbol‑marked word, they can repeatedly reinforce their practice.
Froggy Flex
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Froggy Flex teaches CSS Flexbox through 24 interactive puzzles. Write real flex styles in an in-app editor to guide colorful frogs onto their lilypads — no setup, no browser, just hands-on layout practice on your phone. Perfect for students learning web layout, bootcamp grads brushing up, and working developers who want a quick flex refresher on the go. Features • 24 progressively harder levels covering justify-content, align-items, flex-direction, flex-wrap, order, flex-grow, align-self, and more • Live code editor with instant visual feedback • Plain-English explanations for every property • Offline — works anywhere, no account required • Clean, distraction-free interface
Screenshots
Verdict
The clearest difference is ads: N3 at none against Froggy Flex's shown. Froggy Flex's advantage is update cadence (every 5 months vs every 25 months) and iOS requirement (15.1 vs 26.0). On price, in-app purchases 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
N3 costs $9.99 and Froggy Flex $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
N3 ships an update every 25 months, Froggy Flex every 5 months. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | N3 | Froggy Flex |
|---|---|---|
| Price | $9.99 | $9.99 |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 25 months | Every 5 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 16 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Yamase & Touwa Japanese Insititute | Moruk LLC |
In-app purchases
N3
No in-app purchases
Froggy Flex
No in-app purchases









