# Lune Line Cycle Tracker vs Sync

The clearest difference is update cadence: Lune Line Cycle Tracker at every 5 days against Sync's every 3 weeks. On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Lune Line Cycle Tracker against 5.0 for Sync. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Lune Line Cycle Tracker ships an update every 5 days, Sync every 3 weeks. The most recent releases landed on October 22, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Lune Line Cycle Tracker | Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/lune-line-cycle-tracker/id6737253593/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/sync-private-period-tracker/id6743987631/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 75 MB | 41 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Sexology Systems LLC](https://appshunter.io/developer/1775616375) | [Wei Jian Wong](https://appshunter.io/developer/1805425419) |

## What reviewers say

### Lune Line Cycle Tracker

[App page](https://appshunter.io/ios/app/lune-line-cycle-tracker/id6737253593)

Easily log your menstrual cycle, receive updated predictions, and get gentle reminders to stay prepared. This private tracker helps reduce the monthly mental load. It is not a medical device and should not be used for contraception.

**Highlights:** Track period dates, View cycle stage, Predict upcoming periods, Receive period reminders, Optional PIN for privacy, Browse period care essentials

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

**In-app purchases:** none


### Sync

[App page](https://appshunter.io/ios/app/sync-private-period-tracker/id6743987631)

A privacy-focused period tracker that stores all your data locally on your device. It offers a simple and ad-free experience for managing your menstrual cycle.

**Highlights:** Privacy-focused design, Local data storage, Ad-free experience, Simple interface, Cycle tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Lune Line Cycle Tracker free?

Lune Line Cycle Tracker is free to download, with no in-app purchases.

### Is Sync free?

Sync is free to download, with no in-app purchases.

### Which has better reviews, Lune Line Cycle Tracker or Sync?

Lune Line Cycle Tracker and Sync are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Lune Line Cycle Tracker or Sync have ads?

Neither Lune Line Cycle Tracker nor Sync shows ads.

### Which is updated more often, Lune Line Cycle Tracker or Sync?

Lune Line Cycle Tracker ships an update every 5 days, and Sync every 3 weeks. Most recently, Lune Line Cycle Tracker was updated on October 22, 2026 and Sync on October 3, 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.*