Comparison

Moca vs Whyday

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

Head to head
About

Moca

This app makes learning vocabulary and conversation patterns fun through gamified flashcards. It offers AI-generated content and syncs across devices via iCloud. Users can import words via CSV and earn in-game rewards for progress.

Highlights
  • AI-generated flashcards
  • Gamified learning with experience points
  • Vocabulary and conversation pattern memorization
  • iCloud sync across iOS devices
  • CSV import for bulk word addition
  • In-game rewards and leveling system
Features
Read full description

MOCA is a personal and fun gaming book to memorize Vocabularies and conversation patterns, which can be can as you are studying. The data is stored on iCloud, and it automatically syncs with your other iOS devices; with a simple UI easy to understand at first glance, you can easily add words and sentences in all languages of the world. You can also register many words with Moca at once as a CSV file edited in an Excel spreadsheet (or Google Spreadsheet). You can play games and get experience points with the words and sentences you added without paying anything, and free slot is given to you as the reward for leveling up! When you reach level 40, the total number of slots rewarded is about 1000, and about 6300 on reaching level 100. Words/sentences will be stored in your brain while you’re leveling up! ********** - If you have paid for an unlimited subscription product and cannot use it, you can restore it by clicking the ""Restore Purchase"" button at the top right of the purchase screen for unlimited subscription products. - If the slots are not properly added after purchasing 200 slots or 1000 slots, please send the purchase receipt through Settings> Send Email to Developer in the Moca app. - Please email us any errors or inquiries and you will get a much faster response. (It takes a long time to respond because the App Store review is shown the day after it is written.) [Contact us] momots_works@naver.com ** Subscriptions will be charged to your credit card through your iTunes account. Your subscription will renew automatically unless canceled at least 24 hours before the end of the current period. Subscription cancellations will take effect following the current period. Manage your subscriptions in your Account Settings after purchase. Terms of Service : https://bit.ly/3BNn6mz Privacy Policy : https://bit.ly/2SyGKee

About

Whyday

Features
Read full description

"안다고 생각했는데, 막상 설명하려니 안 되는 것." Whyday 는 그걸 찾아서 하나씩 없애는 앱입니다. ■ 다섯 문제로 하나를 이해합니다 하나의 주제를 다섯 단계로 오릅니다. 진입 → 원리 → 인과 → 경계 → 적용. 첫 단계에서 먼저 묻습니다. "알고 있다" 인가요, "모르겠다" 인가요? 확신하고 틀린 것만 「안다고 착각한 것」에 모입니다. 확신 없이 틀린 것은 착각이 아니라 그냥 모르는 것이니까요. ■ 그날은 Nodi 를 주지 않습니다 마쳤다고 이해한 것은 아닙니다. 그날은 답이 눈앞에 있었으니까요. 사흘 뒤, 다른 상황으로 다시 묻습니다. 그때 풀면 +1 Nodi. 열흘 뒤 한 번 더, 한 달 뒤 또 한 번 통과하면 그제서야 굳습니다. Nodi 는 쓸 수 없습니다. 무엇과도 바꿀 수 없고, 이해한 만큼만 늘어납니다. ■ 이해한 만큼 마을이 자랍니다 켠 주제마다 지도에 집이 섭니다. 사는 사람도 늘어납니다. 마을은 깨알로 못 삽니다 — 오직 이해가 짓습니다. 문제를 풀면 깨알이 쌓이고, 그걸로는 깨알이의 옷과 기분만 삽니다. ■ 나만 그런 게 아닙니다 같은 문제에서 사람들이 무엇을 골랐는지 보여드립니다. "34명 중 62%가 아직 이렇게 압니다." 표본이 적으면 아무 말도 하지 않습니다. 숫자가 없으면 주장도 안 합니다. ■ 지금 들어 있는 것 · 사다리 231편 (문항 1,155개 + 재확인 231개) · 주제 230곳 (인간 · 기술 · 세계 · 자연 · 문화) · 지도에는 자리가 625곳 있고, 나머지는 만드는 중입니다 하루에 최대 세 편. 몰아서 푸는 앱이 아닙니다. ■ 약속 · 로그인 없이 모든 기능을 씁니다. 로그인은 기기를 바꿀 때만 필요합니다. · 이름과 이메일은 서버에 저장하지 않습니다. · 광고는 스스로 누를 때만, 하루 두 번까지. 맞춤 광고를 쓰지 않습니다. · 인앱 결제가 없습니다. · 분모를 숨기지 않습니다. 모르면 모른다고 적습니다.

Screenshots

Moca4 screens
Whyday4 screens

Verdict

The call

The clearest difference is in-app purchases: Whyday at none against Moca's 5. Moca's advantage is device support (4 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence 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. Moca sells 5 in-app purchases, starting at $2.49 per month. Whyday asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Moca versus Whyday: the parameters behind the verdict, then further details
ParameterMocaWhyday
PriceFreeFree
Rating4.8 (41 ratings) — better—
Positive reviews89.9% of reviews—
Number of ratings41 — better—
Update frequencyEvery 5 daysEvery 5 days
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size48 MB13 MB
Age rating4+9+
DeveloperAHN YOONJIEgosoft

In-app purchases

5 purchases

Moca

Subscriptions3
  • Moca AI PRO$2.491 Month
  • Unlimited Slots(3-month)$7.993 Months
  • Unlimited Slots(1-year)$11.991 Year
One-time2
  • [200 additional slots]$1.09
  • [1,000 additional slots]$4.39
None

Whyday

No in-app purchases

Questions

Is Moca free?
Moca is free to download, with in-app purchases available.
Is Whyday free?
Whyday is free to download, with no in-app purchases.
Do Moca or Whyday have ads?
Both Moca and Whyday show ads.
Which is updated more often, Moca or Whyday?
Moca ships an update every 5 days, and Whyday every 5 days. Most recently, Moca was updated on November 4, 2026 and Whyday on October 31, 2026.

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