Comparison

쪽잠 Pro vs MomoCalendar

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

Head to head
About

쪽잠 Pro

This app provides a quiet nap timer for short rests, allowing custom duration settings. It plays alarms only through earphones for discreet use in quiet environments and displays remaining time on the lock screen and Dynamic Island.

Highlights
  • Custom nap time setting
  • Quick selection for common durations
  • Earphone-only alarm playback
  • Lock screen and Dynamic Island display
  • Adjustable system volume within the app
  • 5-minute interval repeat alarm
Features
Read full description

쪽잠 Pro는 짧은 낮잠과 휴식을 위한 조용한 쪽잠 타이머입니다. 유튜브 영상은 정해진 길이에 맞춰 들어야 하지만 쪽잠 Pro에서는 원하는 시간을 직접 설정할 수 있습니다. 5분, 15분, 30분처럼 자주 쓰는 시간은 바로 선택하고 필요한 경우 시간·분·초를 직접 조절해 나에게 맞는 쪽잠 시간을 만들 수 있어요. 이어폰을 연결하면 알람음이 이어폰으로 재생되어 독서실, 도서관, 사무실처럼 조용한 공간에서도 사용할 수 있습니다. 시스템 볼륨 슬라이더를 앱 안에서 바로 조절할 수 있어 알람이 들릴 정도로 미리 맞춰둘 수 있습니다. 잠금화면과 Dynamic Island에서는 남은 시간을 확인할 수 있고, 5분 간격 반복 기능을 켜두면 앱에서 알람을 끄기 전까지 다시 울리도록 설정할 수 있습니다. 주요 기능 - 원하는 쪽잠 시간 직접 설정 - 자주 쓰는 시간 빠른 선택 - 일어날 시간 기준 알람 설정 - 이어폰으로 조용한 알람 재생 - 앱 안에서 시스템 볼륨 조절 - 잠금화면 및 Dynamic Island 남은 시간 표시 - 5분 간격 반복 알람 - 처음 사용하는 사람을 위한 튜토리얼 주의 앱을 완전히 종료하지 않고 백그라운드에 둔 상태에서 사용해주세요. 기기 또는 이어폰의 시스템 볼륨이 0이면 알람음이 들리지 않을 수 있습니다.

About

MomoCalendar

This app simplifies cycle tracking by auto-predicting your next period, fertile window, and ovulation day. Log symptoms, mood, and contraception privately within a beautiful calendar interface. It offers smart predictions, daily logging, and secure data management.

Highlights
  • Smart period and ovulation predictions
  • Daily logging of flow, pain, mood, and symptoms
  • Contraceptive and intimate relations tracking
  • Calendar view with statistics and patterns
  • PIN-protected app lock for privacy
  • Reminders for period, ovulation, and daily logs
Features
Read full description

Never wonder when your next period is coming again. MomoCalendar is the simplest cycle tracker. Log your last period start date once, and the app auto-predicts your next period, fertile window, and ovulation day. Track flow, pain, mood, contraception, and intimate relations privately — all in one beautiful calendar. [ Key Features ] ▶ Smart Predictions • Auto-predict next period, fertile window, ovulation day • Personalized average cycle / period length (fully customizable) • Toggle fertile window display ON / OFF ▶ Daily Logging • Flow level (none, light, normal, heavy) • Pain score 0–10 • Multi-select symptoms (headache, cramps, bloating, acne, and more) • Mood (good, calm, sensitive, sad, anxious) • Free-form memo ▶ Pill & Relations • Separate logs for oral contraceptive + emergency contraception • Private log for protected / unprotected relations ▶ Calendar + Statistics • Beautiful month view at a glance • Visualize symptom, mood, pill, and relation patterns over time • Track average cycle length + prediction accuracy ▶ Reminders & Security • Period start, ovulation day, and daily log reminders • PIN-protected app lock — no one can open it without your code • Light / dark theme + Korean / English UI [ Made For You If ] • Your cycle is irregular and predictions matter • You're using natural family planning or trying to conceive • You keep forgetting your daily pill • You want to see symptom + mood patterns in real data • You're tired of ad-stuffed, feature-bloated trackers [ Privacy First ] • Your data is encrypted in transit and tied to your account only • No third-party sharing beyond ad personalization • Full data deletion on account removal (server + device) • PIN lock keeps your data safe even if your phone is lost [ Account & Sync ] • Sign in with Google, Apple, or Email • Auto-sync across device changes or reinstalls [ Contact ] • Feedback: siwooeo@gmail.com • Website: https://www.reactiveworks.dev MomoCalendar is not a substitute for medical diagnosis or treatment. Always consult a qualified OB/GYN for any concerning symptoms.

Screenshots

쪽잠 Pro4 screens
MomoCalendar4 screens

Verdict

The call

The clearest difference is ads: 쪽잠 Pro at none against MomoCalendar's shown. 쪽잠 Pro also leads on monetization model (free vs ad-supported) and update cadence (every 3 weeks vs every 6 weeks). MomoCalendar's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, review sentiment 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

쪽잠 Pro ships an update every 3 weeks, MomoCalendar every 6 weeks. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

Scorecard5 real differences · 5 level
쪽잠 Pro versus MomoCalendar: the parameters behind the verdict, then further details
Parameter쪽잠 ProMomoCalendar
PriceFreeFree
Rating3.8 (4 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings4 — better—
Update frequencyEvery 3 weeks — betterEvery 6 weeks
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size9 MB38 MB
Age rating4+4+
DeveloperYechan GuSiU Ahn

Customer experience

쪽잠 Pro

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

MomoCalendar

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

쪽잠 Pro

No in-app purchases

None

MomoCalendar

No in-app purchases

Questions

Is 쪽잠 Pro free?
쪽잠 Pro is free to download, with no in-app purchases.
Is MomoCalendar free?
MomoCalendar is free to download, with no in-app purchases.
Do 쪽잠 Pro or MomoCalendar have ads?
MomoCalendar shows ads; 쪽잠 Pro does not.
Which is updated more often, 쪽잠 Pro or MomoCalendar?
쪽잠 Pro ships an update every 3 weeks, and MomoCalendar every 6 weeks. Most recently, 쪽잠 Pro was updated on October 24, 2026 and MomoCalendar on October 8, 2026.

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