Redo Calculator vs 킹보드
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Redo Calculator
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Redo Calculator lets you calculate confidently without worrying about mistakes. With full Undo and Redo support, you can easily correct inputs, and the screen-on feature ensures the display never turns off while calculating. Features - Undo & Redo for easy correction - Prevents screen from turning off during use - Clean, minimal design - Keeps your recent calculation history Simple, reliable, and focused — Redo Calculator helps you calculate without interruption.
킹보드
Enhance your typing experience with an AI-powered keyboard that offers instant grammar correction, translation, and style adjustments. Access frequently used phrases, emojis, and customize your keyboard layout and themes.
- AI-powered grammar and spelling correction
- Instant translation of typed or pasted text
- Contextual style conversion for different situations
- Text replacement with custom shortcuts
- Quick access to saved notes and clipboard history
- Emoji keyboard with categories and recents
- Customizable keyboard settings (layout, themes, sound)
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• 맞춤법 교정: 맞춤법과 띄어쓰기를 키보드에서 자동으로 교정 할 수 있어요. • 번역·외국어 공부: 30개 언어로 번역하고, 한글 발음을 보거나 음성으로 들으며 외국어를 익혀요. • 말투 변환: 상황에 맞는 말투로 바꾸고, 원하는 말투를 직접 적어 나만의 스타일도 만들 수 있어요. • 메모·클립보드·텍스트 대치: 자주 쓰는 글과 사진을 메모에 보관하고, 복사한 내용이나 등록한 단축어를 빠르게 입력해요. • 이모지·특수문자: 키보드에서 바로 찾아 입력해요. • 나만의 키보드: 사진 테마, 키캡 사운드, 진동, 숫자열, 높이, 글자 크기까지 취향대로 꾸며요. AI 기능에는 크레딧이 사용돼요. 무료 크레딧으로 시작하고, 광고 보상이나 구독으로 더 이용할 수 있어요. AI 기능과 클립보드 등 일부 기능은 키보드 전체 접근 허용이 필요해요. (사실이면 추가) AI 버튼을 누른 문장만 서버로 전송돼요. 개인정보처리방침: https://ehdtjq16221622-source.github.io/spellcheck-keyboard/privacy.html 이용약관: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: Redo Calculator at none against 킹보드's shown. Redo Calculator also leads on iOS requirement (13.0 vs 17.0). 킹보드's advantage is update cadence (every 2 days vs every 2 months). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Redo Calculator ships an update every 2 months, 킹보드 every 2 days. The most recent releases landed on October 7, 2026 and October 19, 2026 respectively.
| Parameter | Redo Calculator | 킹보드 |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 72.7% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 20 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Seongmin Yim | Dong sub Park |
In-app purchases
Redo Calculator
No in-app purchases
킹보드
No in-app purchases
