Subrain vs FLIP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Subrain
This app helps you remember important information and life keywords that you might otherwise forget. Designed for minimalists, it offers a simple way to capture thoughts and serve as a personal milestone.
- Simple note-taking
- Capture life keywords
- Minimalist design
- Acts as a milestone
- Organize notes into pages
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우리는 하루에도 많은 일을 잊곤 합니다. 그것이 한 주, 한 달... 1년 이상 누적되면, 우리는 얼마나 많은 중요한 키워드를 잊으며 살아가는 걸까요? 어쩌면 인생의 큰 방향이 조금씩 바뀔 수도 있습니다. 이럴때마다, Subrain은 당신의 인생에서 이정표 같은 역할을 할 것입니다. 간단한 할 일부터, 인생에 대한 중요한 키워드를 마음껏 적어보세요. Subrain은 복잡한 건 딱 질색인 미니멀리스트를 위한 노트입니다. 마치 두뇌가 하나 더 생긴 경험을 해보세요. 노트 작성, 그리고 노트들이 담긴 페이지. 이 두 가지만 기억하세요. - 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.
FLIP
This app helps overcome procrastination by using a 2-minute rule to initiate tasks. It features a simple, single-screen interface with haptic feedback and lock-screen visibility to encourage deep work and short breaks.
- 2-minute kickoff timer
- Flip phone for deep work
- Sideways phone for breaks
- Single-screen interface
- Haptic feedback
- Lock-screen and Live Activity
- 100% on-device privacy
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The hardest part of any task is starting. The 2-minute rule says: just commit to two minutes — then decide whether to keep going. Most of the time, once you've started, you'll keep working far longer. FLIP is a single-screen timer built around that idea. —————————————— HOW IT WORKS • Tap once to start a 2-minute kickoff timer. • When 2 minutes are up, flip your phone face-down to commit to a 20-minute deep-work block. • When deep work ends, turn your phone sideways to take a 5-minute break. • Hold anywhere to cancel — a segmented bar fills with synchronized haptics so the gesture is unmistakable. That's it. No accounts, no settings, no menus. —————————————— DESIGNED FOR FOCUS • Single-screen interface with a retro-digital typeface and edge-to-edge color fill that grows with the timer • Haptic feedback on every state change so you don't have to look at the screen • Lock-screen and Dynamic Island Live Activity — keep the countdown visible without unlocking your phone • A short chime when each phase ends so you can put the phone down and focus —————————————— PRIVATE BY DESIGN • 100% on-device. No accounts, no analytics, no third-party SDKs, no servers. • No data collection. The privacy policy fits on one page. —————————————— WHO IT'S FOR • People who reach for their phone instead of starting a task • Knowledge workers running Pomodoro-like sessions • Students looking for a low-friction focus timer • Anyone who wants the smallest possible app between them and beginning a task Beat procrastination by promising yourself two minutes. Then flip the phone.
Screenshots
Verdict
The clearest difference is update cadence: FLIP at every 3 months against Subrain's every 15 months. Subrain's advantage is iOS requirement (15.0 vs 26.0). On price, review sentiment, ads and in-app purchases 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.
Subrain ships an update every 15 months, FLIP every 3 months. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.
| Parameter | Subrain | FLIP |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 15 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 41 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Jichan Hwang | Izhan Ansari |
Customer experience
Subrain
FLIP
In-app purchases
Subrain
No in-app purchases
FLIP
No in-app purchases









