Comparison

Subrain vs FLIP

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Simple note-taking
  • Capture life keywords
  • Minimalist design
  • Acts as a milestone
  • Organize notes into pages
Features
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

Subrain4 screens
FLIP4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Subrain versus FLIP: the parameters behind the verdict, then further details
ParameterSubrainFLIP
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 15 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.0
Further details — not scored
Size41 MB2 MB
Age rating4+4+
DeveloperJichan HwangIzhan Ansari

Customer experience

Subrain

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

FLIP

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Subrain

No in-app purchases

None

FLIP

No in-app purchases

Questions

Is Subrain free?
Subrain is free to download, with no in-app purchases.
Is FLIP free?
FLIP is free to download, with no in-app purchases.
Do Subrain or FLIP have ads?
Neither Subrain nor FLIP shows ads.
Which is updated more often, Subrain or FLIP?
Subrain ships an update every 15 months, and FLIP every 3 months. Most recently, Subrain was updated on October 24, 2026 and FLIP on October 16, 2026.

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