Subrain vs AreaViz
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Subrain
This minimalist note-taking app helps you remember important keywords and life directions. It offers a simple interface for jotting down tasks and life-defining thoughts, acting as an extension of your memory.
- Simple note writing
- Organized pages for notes
- Minimalist interface
- Acts as an extra brain
- Helps remember keywords
- Tracks life directions
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์ฐ๋ฆฌ๋ ํ๋ฃจ์๋ ๋ง์ ์ผ์ ์๊ณค ํฉ๋๋ค. ๊ทธ๊ฒ์ด ํ ์ฃผ, ํ ๋ฌ... 1๋ ์ด์ ๋์ ๋๋ฉด, ์ฐ๋ฆฌ๋ ์ผ๋ง๋ ๋ง์ ์ค์ํ ํค์๋๋ฅผ ์์ผ๋ฉฐ ์ด์๊ฐ๋ ๊ฑธ๊น์? ์ด์ฉ๋ฉด ์ธ์์ ํฐ ๋ฐฉํฅ์ด ์กฐ๊ธ์ฉ ๋ฐ๋ ์๋ ์์ต๋๋ค. ์ด๋ด๋๋ง๋ค, Subrain์ ๋น์ ์ ์ธ์์์ ์ด์ ํ ๊ฐ์ ์ญํ ์ ํ ๊ฒ์ ๋๋ค. ๊ฐ๋จํ ํ ์ผ๋ถํฐ, ์ธ์์ ๋ํ ์ค์ํ ํค์๋๋ฅผ ๋ง์๊ป ์ ์ด๋ณด์ธ์. Subrain์ ๋ณต์กํ ๊ฑด ๋ฑ ์ง์์ธ ๋ฏธ๋๋ฉ๋ฆฌ์คํธ๋ฅผ ์ํ ๋ ธํธ์ ๋๋ค. ๋ง์น ๋๋๊ฐ ํ๋ ๋ ์๊ธด ๊ฒฝํ์ ํด๋ณด์ธ์. ๋ ธํธ ์์ฑ, ๊ทธ๋ฆฌ๊ณ ๋ ธํธ๋ค์ด ๋ด๊ธด ํ์ด์ง. ์ด ๋ ๊ฐ์ง๋ง ๊ธฐ์ตํ์ธ์. - We forget many things every day. If it accumulates over 1 month, 6 months... over a year, how many important keywords do we forget? Maybe the big direction of your life will change little by little. At times like this, Subrain will act like a milestone in your life. Feel free to write down everything from simple things to do to important keywords about your life. Subrain is a notebook for minimalists who hate complexity. Feel as if you have an extra brain. Just remember these two things: Writing notes and pages containing notes.
AreaViz
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Use multiple AIs in one conversationโas much as you need. Subscribing to multiple AI services on separate monthly plans can result in recurring charges even when you do not use them. AreaViz uses API keys issued by OpenAI, Anthropic, and Google, helping you manage costs based on actual usage under each providerโs usage-based API pricing. Freely use different AI models in a single conversation. Switch models based on your question and compare answers from different perspectives. It is especially useful for people who want to use multiple AIs without the burden of subscribing to each service separately. โ Get started with your own API keys Register an API key issued by OpenAI, Anthropic, or Google and start chatting right away. There is no need to create an AreaViz account or sign in separately. AI API usage is billed directly to your account according to each providerโs pricing and payment policies. AreaViz does not add a separate fee to API charges, and AI API usage is not included with an AreaViz Pro purchase. Your registered API keys are securely stored in the Keychain on your Apple device and are sent only to the corresponding AI providerโs API server to process your requests. โ Conversations that continue across Apple devices AreaViz supports iPhone, iPad, and Mac. Conversations sync automatically through iCloud, so you can continue chatting naturally on another device. โ Ask with images and content - Attach photos taken with the camera or images from your photo library - Capture and mark up any area of your Mac screen, then ask about it immediately โ Faster on Mac Use global keyboard shortcuts to access AreaViz quickly while working in other apps. - Chat bar: โZ - Open app window: โโงZ - Capture screen area: โX โ Start free, then purchase only once when you need more AreaViz is not a monthly subscription. Basic chat features are free, and registering your first API key unlocks a 7-day trial of all features. After the trial ends, you can continue using the following features within the free limits. - Screen capture and chat bar - Up to 3 prompts - Attach 1 image per message A one-time AreaViz Pro purchase permanently unlocks the following features. - Up to 24 prompts - Attach up to 4 images per message - Unlimited screen capture and chat bar use - Automatic question suggestions - Change the AI model for each response - Adjust the amount of conversation history sent to the model Users who previously purchased AreaViz tokens can use Pro at no additional cost. โ Privacy AreaViz does not require a separate account. API keys and conversation content are not stored on the developerโs servers. API keys are stored in your deviceโs Keychain, and conversation history is stored on your devices and in your personal iCloud. Content sent to an AI is delivered to the selected providerโs API to generate a response and is subject to that providerโs data-processing policies. โ Privacy Policy https://boardtack.com/AreaViz/privacy.html โ Terms of Use https://boardtack.com/AreaViz/terms.html
Screenshots
Verdict
The clearest difference is in-app purchases: Subrain at none against AreaViz's 1. Subrain also leads on iOS requirement (15.0 vs 17.0). AreaViz's advantage is update cadence (every 2 days vs every 8 days). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. AreaViz sells 1 one-off in-app purchase. Subrain asks for nothing beyond the download.
Subrain ships an update every 8 days, AreaViz every 2 days. The most recent releases landed on October 30, 2026 and November 4, 2026 respectively.
| Parameter | Subrain | AreaViz |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | โ |
| Update frequency | Every 8 days | Every 2 days โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Monetization | Free | โ |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.0 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 41 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Jichan Hwang | BoardTack |
In-app purchases
Subrain
No in-app purchases
AreaViz
- AreaViz Pro$29.99









