Comparison

速習英単語 vs Stackd

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

Head to head
About

速習英単語

Master essential vocabulary for the Common Test with this app. It efficiently teaches 2140 frequently appearing English words, offering audio, example sentences, and targeted review of words you find difficult. Ideal for students aiming to improve their English scores.

Highlights
  • Learn 2140 essential vocabulary words
  • Focus on Common Test frequent words
  • Efficient and fast memorization
  • Includes audio pronunciation
  • Provides example sentences
  • Reviews only difficult words
Features
Read full description

◆共通テスト英単語学習アプリの決定版!◆ ◇2140語を収録!◇ ◆共通テストで頻出する英単語を効率よく、最速で覚えることができる◆ 多くの学生は、単語を覚える際に、間違えた単語をメモして、 本を開き閉じ、紙に単語をかいて覚えてることと思います。 しかし、 音声が聞けない、 例文と一緒に覚えることが面倒、 例文の音声が聞けない、 など、単語を覚えるにあたっての苦労があるかと思います。 このアプリは、その悩みをすべて解消します。 【こんな人におすすめ】 ・共通テストの英語の点数を上げたい方 ・共通テストで出題される英単語を効率よく覚えたい方 ・隙間時間に英単語を覚えたい方 ・効率よく覚えてない単語だけ覚えたい方 【規約等】 利用規約:https://sites.google.com/studypeaks.app/eduteckstudio-word-app?usp=sharing プライバシーポリシー:https://sites.google.com/view/tangomeijin 特定商取引法に関する表示:https://sites.google.com/studypeaks.app/eduteckstudio-word-app-tokutei?usp=sharing

About

Stackd

Features
Read full description

This is a simple study timer app that allows you to record and manage your study time by subject. Simply measure your time with the timer and save it. You can also log sessions manually or add entries for past dates. You can record everything together, including subjects, study materials, pages, and notes. You can view the big picture of your studies by checking your subject balance with weekly graphs and reviewing your progress streaks on the calendar. No ads, no social media features, and no account registration required. All data is saved on your device, so there are no privacy concerns. Perfect for anyone who wants to focus on learning, from exam preparation to certifications and language studies. [Main Features] - 3 timer modes (Stopwatch, Countdown, Pomodoro) - Management of subjects, materials, pages, and notes - Weekly graphs to check subject balance (bar chart & donut chart) - Calendar to visualize study days with color-coding - Display of consecutive study days (streaks) - Daily study reminder - Backup and data export functions [Stackd Pro (One-time purchase)] - Monthly graphs and cumulative line graphs - Setting weekly goals and checking achievement rates - 9 color themes - Home screen and lock screen widgets

Screenshots

速習英単語4 screens
Stackd4 screens

Verdict

The call

The clearest difference is in-app purchases: 速習英単語 at none against Stackd's 1. 速習英単語 also leads on update cadence (daily vs fortnightly) and device support (3 vs 1). On price and ads 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

Both are free to download. Stackd sells 1 one-off in-app purchase. 速習英単語 asks for nothing beyond the download.

UpkeepUpdate frequency

速習英単語 ships an update daily, Stackd fortnightly. The most recent releases landed on August 16, 2026 and September 14, 2026 respectively.

Scorecard4 real differences · 4 level
速習英単語 versus Stackd: the parameters behind the verdict, then further details
Parameter速習英単語Stackd
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyDaily — betterFortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better18
Further details — not scored
Size31 MB3 MB
Age rating4+4+
DeveloperStudyPeaksNene Nakagawa

In-app purchases

None

速習英単語

No in-app purchases

1 purchases

Stackd

One-time1
  • Stackd Pro$1.99

Questions

Is 速習英単語 free?
速習英単語 is free to download, with no in-app purchases.
Is Stackd free?
Stackd is free to download, with in-app purchases available.
Do 速習英単語 or Stackd have ads?
Neither 速習英単語 nor Stackd shows ads.
Which is updated more often, 速習英単語 or Stackd?
速習英単語 ships an update daily, and Stackd fortnightly. Most recently, 速習英単語 was updated on August 16, 2026 and Stackd on September 14, 2026.

Other comparisons