# MoonFlow vs LunaDay

The clearest difference is rating: LunaDay at 5.0 against MoonFlow's 1.0. MoonFlow's advantage is iOS requirement (15.0 vs 17.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. MoonFlow sells 3 in-app purchases, starting at $3.99 per month and LunaDay sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

LunaDay holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

MoonFlow ships an update fortnightly, LunaDay every 2 weeks. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | MoonFlow | LunaDay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/moonflow-period-tracker-cycle/id6756520833/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lunaday/id6757979349/reviews)** |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 176 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [Tarik Murat Islam](https://appshunter.io/developer/1861137277) | [想 李](https://appshunter.io/developer/1867214616) |

## What reviewers say

### MoonFlow

[App page](https://appshunter.io/ios/app/moonflow-period-tracker-cycle/id6756520833)

This app helps you track your menstrual cycle, ovulation, and pregnancy with a focus on privacy. It offers accurate predictions, daily logging of symptoms, and a pregnancy mode. All your data is stored locally on your device, ensuring it's never shared or sold.

**Highlights:** Accurate period and ovulation predictions, Daily symptom and mood logging, Pregnancy mode with week-by-week development, 100% offline data storage, App lock with PIN or biometrics, Stealth mode for calculator disguise, Data export to file

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $3.99 | per month |
| Annual Premium | $29.99 | per year |
| Lifetime Access | $79.99 | one-time |


### LunaDay

[App page](https://appshunter.io/ios/app/lunaday/id6757979349)

A private, offline period tracker focused on digital minimalism. It offers a clean interface, smart predictions, and gentle reminders, with all data stored locally on your device. Enjoy a permanently ad-free experience with a one-time purchase for lifetime access.

**Highlights:** Absolute privacy with local data storage, Ultra-lightweight and fast performance, Permanently ad-free interface, Minimalist calendar view, Smart period prediction, Gentle reminders, iCloud sync for Apple devices

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 永久会员权益 | $0.99 | one-time |


## Frequently asked questions

### Is MoonFlow free?

MoonFlow is free to download, with in-app purchases available.

### Is LunaDay free?

LunaDay is free to download, with in-app purchases available.

### Which has better reviews, MoonFlow or LunaDay?

LunaDay is rated higher. MoonFlow averages 1.0 out of 5 from 1 ratings, while LunaDay averages 5.0 from 1 ratings.

### Do MoonFlow or LunaDay have ads?

Neither MoonFlow nor LunaDay shows ads.

### Which is updated more often, MoonFlow or LunaDay?

MoonFlow ships an update fortnightly, and LunaDay every 2 weeks. Most recently, MoonFlow was updated on October 13, 2026 and LunaDay on October 14, 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.*