# 쪽잠 Pro vs MomoCalendar

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.

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

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.

## The numbers

| Metric | 쪽잠 Pro | MomoCalendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/pro/id6767180257/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | **Free** | Ad-supported |
| Size | 9 MB | 38 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yechan Gu](https://appshunter.io/developer/1879393081) | [SiU Ahn](https://appshunter.io/developer/1601025745) |

## What reviewers say

### 쪽잠 Pro

[App page](https://appshunter.io/ios/app/pro/id6767180257)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### MomoCalendar

[App page](https://appshunter.io/ios/app/momocalendar/id6769393682)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*