Comparison

N3 vs Froggy Flex

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

Froggy Flex

Features
Read full description

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

N34 screens
Froggy Flex4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

N3 costs $9.99 and Froggy Flex $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 5 level
N3 versus Froggy Flex: the parameters behind the verdict, then further details
ParameterN3Froggy Flex
Price$9.99$9.99
Positive reviews100.0% of reviews—
Update frequencyEvery 25 monthsEvery 5 months — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPod
Requires iOS26.015.1 — better
Further details — not scored
Size16 MB42 MB
Age rating4+4+
DeveloperYamase & Touwa Japanese InsitituteMoruk LLC

In-app purchases

None

N3

No in-app purchases

None

Froggy Flex

No in-app purchases

Questions

Is N3 free?
N3 costs $9.99, with no in-app purchases.
Is Froggy Flex free?
Froggy Flex costs $9.99, with no in-app purchases.
Do N3 or Froggy Flex have ads?
Froggy Flex shows ads; N3 does not.
Which is updated more often, N3 or Froggy Flex?
N3 ships an update every 25 months, and Froggy Flex every 5 months. Most recently, N3 was updated on November 1, 2026 and Froggy Flex on October 31, 2026.

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