Comparison

FlashCards vs A単

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

Head to head
About

FlashCards

Create, learn, and share digital flashcards for effective studying. Optimize your learning with spaced repetition based on the forgetting curve. Ideal for subjects like languages, history, and science, from school tests to standardized exams.

Highlights
  • Create unlimited flashcards and learning sets
  • Spaced repetition based on forgetting curve
  • Share learning sets with other users
  • Import learning sets from text files
  • Test modes with swiping and random order
  • Supplementary memos on cards
Features
Read full description

Easy to use yet powerful. Best for learning language, history, science etc. ・Just swiping card right or left ・Optimized studying based on the forgetting curve ・Create and Share flashcards ・Helpful for from test in school to big exams like the SAT or ACT ・Learn language, science, social studies, and so on ▶MAIN FUNCTION ・ Create flashcards freely ・ Because you can create multiple learning sets, it can be used for various memorization, study and learning ・ You can create an unlimited number of learning sets and cards in them ・ Supplementary memos can be written on each card, so it is possible to add example sentences etc. ・ The created learning set can be uploaded and shared with other users ・ In the test of learning achievement, you can learn easily by swiping left and right with "understand" and "not understand" ・ Because you can choose “random according to correct answer rate” as well as “in order” in the test questions, you can memorize according to the degree of achievement ・ You can be in the homestretch before the test by setting the narrowing mode so that you do not ask questions that you have answered correctly ▶OPTIMAL LEARNING BASED ON FORGETTING CURVE Based on Ebbinghaus Forgetting Curve theory, efficient learning with emphasis on review is possible. Repeat review at appropriate timing along the forgetting curve, memorizing retention rate is also up! ▶IMPORT LEARNING SET Learning set can be imported from text file (.txt tab-delimited UTF-8 is recommended)

About

A単

Features
Read full description

英和辞書です。30万語以上収録。 地下鉄・飛行機の中など、インターネット接続ができない場合でも使えます(オフライン辞書)。海外旅行・海外出張などで、現地でデータ通信をしたくない・できない場合でも使えます。 アプリ内課金もありません。 単語をタップすると英語で発音します。

Screenshots

FlashCards4 screens
A単1 screens

Verdict

The call

The clearest difference is in-app purchases: A単 at none against FlashCards's 1. A単 also leads on ads (none vs shown). FlashCards's advantage is update cadence (fortnightly vs every 12 months). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. FlashCards sells 1 one-off in-app purchase. A単 asks for nothing beyond the download.

UpkeepUpdate frequency

FlashCards ships an update fortnightly, A単 every 12 months. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 7 level
FlashCards versus A単: the parameters behind the verdict, then further details
ParameterFlashCardsA単
PriceFreeFree
Rating4.5 (48 ratings) — better—
Positive reviews82.8% of reviews—
Number of ratings48 — better—
Update frequencyFortnightly — betterEvery 12 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.011.0 — better
Further details — not scored
Size31 MB18 MB
Age rating4+4+
DeveloperToshiki MotomuraJazz Soft, Inc.

In-app purchases

1 purchases

FlashCards

One-time1
  • Premium Upgrade Flashcards$3.99
None

A単

No in-app purchases

Questions

Is FlashCards free?
FlashCards is free to download, with in-app purchases available.
Is A単 free?
A単 is free to download, with no in-app purchases.
Do FlashCards or A単 have ads?
FlashCards shows ads; A単 does not.
Which is updated more often, FlashCards or A単?
FlashCards ships an update fortnightly, and A単 every 12 months. Most recently, FlashCards was updated on October 17, 2026 and A単 on October 7, 2026.

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