Must vs arka
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Must
Manage all your schedules quickly and easily with this intuitive app. It offers convenient schedule notifications, a dark theme option, and a task monitor to keep track of your to-dos. Organize your tasks systematically using the Eisenhower Matrix and color-coded tags.
- Eisenhower Matrix for systematic task management
- Convenient schedule notifications
- Home screen widgets for quick access
- Customizable color tags for event classification
- Task monitor with filtering options
- Dark theme support
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쉽고 편리한 "must"로 모든 일정을 빠르게 관리하세요. ■ must 앱은, - 쌓여있어 머리 아픈 할 일에 필요 없는 기능은 없앴어요. - 편리한 일정 알림을 받아보세요. - 아이젠하워 매트릭스를 이용해서 체계적으로 일정을 관리할 수 있어요. - 1개의 앱에서 모든 일정을 효과적으로 관리해 보세요. - 다크 테마로 취향에 맞는 갓생을 즐겨보세요. ■ 아이젠하워 매트릭스 & 일정 메모 - 4개의 매트릭스를 마음껏 이용해 보세요. - 사용자 취향에 맞는 분류명/색상으로 설정할 수 있어요. - 새로운 일정을 추가할 때, 다양한 응원 메시지를 확인하는 재미가 있어요. - Task에 대한 세부적인 할 일까지 메모할 수 있어요. ■ 일정 알림 & 홈 화면 위젯 - 편리한 일정 알림으로 여러 일정을 놓치지 마세요. - 홈 화면 위젯으로, 일정을 쉽고 빠르게 확인하세요. ■ 9가지 색상 태그 - 알록달록한 8개 색상과 기본 1개 색상 태그를 설정해 보세요. - 회사, 집, 약속, 경조사, etc... 색상 태그로 다양한 일정을 쉽게 분류해 보세요. ■ 할 일 모니터 - 추가한 모든 일정을 한 눈에 확인할 수 있어요. - 8가지 색상 필터를 사용해서 원하는 분류의 일정만 확인해 보세요. - 남은 할 일, 오늘 할 일 필터를 이용해 보세요.
arka
A straightforward application for storing links you wish to revisit later. Save content from various platforms with a single tap and add notes to recall why you saved it. Organize links into custom collections and share them with others.
- Save links from share sheet
- Add notes to saved links
- Organize links into collections
- Open links in original apps
- Share collections with friends
- Import collections from text
- Local data storage, no account needed
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Saved a link for later, but can't remember where it went? arka brings links scattered across different apps into one place, so you can easily find them whenever you need them. Found something you like? Save it with a single tap of the share button and organize it into your own collections. Save Links Effortlessly No need to open another app or copy URLs. Just select arka from the share menu to save a link instantly. See Everything at a Glance Browse your saved links with thumbnails. Choose between gallery and list views to find the layout that works best for you. Organize with Notes and Collections Add notes to remember why you saved a link, and organize everything into collections for recipes, travel, shopping, and more. Find and Revisit Easily Search your saved links and open the original content again with a single tap. Get started without creating an account. Your saved data stays on your device, with backup and collection sharing features available. No ads. No subscriptions. Just a simple place for all the links you want to keep.
Screenshots
Verdict
The clearest difference is update cadence: arka at every 2 weeks against Must's every 3 months. arka also leads on review sentiment (100% vs 91%). Must's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and monetization model 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.
Must ships an update every 3 months, arka every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Must | arka |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 90.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 54 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Jichan Hwang | jin kyung choi |
Customer experience
Must
arka
In-app purchases
Must
No in-app purchases
arka
No in-app purchases









