Rocket Memo vs Subrain
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Rocket Memo
Capture thoughts instantly with this fast and organized notepad. Set reminders for important notes and find anything quickly with a powerful search. Designed for seamless idea management.
- Instant thought capture
- Tag-based organization
- Lightning-fast search
- Note reminders
- Clean editor
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Simple. Fast. Smart. Capture your thoughts instantly and keep them perfectly organized. A sleek, lightweight notes app designed to move as fast as your ideas. Write Write the moment inspiration strikes. A clean and focused editor helps you stay in the flowβno distractions, no delays. Organize Stay organized with tags. Work, personal notes, ideas, listsβcreate your own simple yet powerful system of organization. Search Find what you need, instantly. A lightning-fast search engine filters thousands of notes in a flash. Remind Forget nothing. Set reminders for important notes and get notified right on time. Whether youβre working, planning, or just thinking out loud, this app keeps up with your mindβsimple, functional, and beautifully fast.
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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μ°λ¦¬λ ν루μλ λ§μ μΌμ μκ³€ ν©λλ€. κ·Έκ²μ΄ ν μ£Ό, ν λ¬... 1λ μ΄μ λμ λλ©΄, μ°λ¦¬λ μΌλ§λ λ§μ μ€μν ν€μλλ₯Ό μμΌλ©° μ΄μκ°λ κ±ΈκΉμ? μ΄μ©λ©΄ μΈμμ ν° λ°©ν₯μ΄ μ‘°κΈμ© λ°λ μλ μμ΅λλ€. μ΄λ΄λλ§λ€, Subrainμ λΉμ μ μΈμμμ μ΄μ ν κ°μ μν μ ν κ²μ λλ€. κ°λ¨ν ν μΌλΆν°, μΈμμ λν μ€μν ν€μλλ₯Ό λ§μκ» μ μ΄λ³΄μΈμ. Subrainμ 볡μ‘ν 건 λ± μ§μμΈ λ―Έλλ©λ¦¬μ€νΈλ₯Ό μν λ ΈνΈμ λλ€. λ§μΉ λλκ° νλ λ μκΈ΄ κ²½νμ ν΄λ³΄μΈμ. λ ΈνΈ μμ±, κ·Έλ¦¬κ³ λ ΈνΈλ€μ΄ λ΄κΈ΄ νμ΄μ§. μ΄ λ κ°μ§λ§ κΈ°μ΅νμΈμ. - 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.
Screenshots
Verdict
The clearest difference is in-app purchases: Subrain at none against Rocket Memo's 5. Subrain also leads on review sentiment (100% vs 80%) and iOS requirement (15.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Rocket Memo sells 5 in-app purchases, starting at $0.99 per month. Subrain asks for nothing beyond the download.
Rocket Memo ships an update every 2 weeks, Subrain every 8 days. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.
| Parameter | Rocket Memo | Subrain |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 80.0% of reviews | 100.0% of reviews β better |
| Update frequency | Every 2 weeks | Every 8 days β better |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Monetization | Freemium | Free β better |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 18.0 | 15.0 β better |
| Further details β not scored | ||
| Size | 6 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Yoshinori Kasaya | Jichan Hwang |
Customer experience
Rocket Memo
Subrain
In-app purchases
Rocket Memo
- Rocket Pro Monthly$0.991 Month
- Rocket Pro Yearly$5.991 Year
- Small Coffee$0.99
- Croissant & Coffee$3.99
- Cake & Coffee$9.99
Subrain
No in-app purchases









