# Re vs Sync

The clearest difference is update cadence: Sync at every 3 weeks against Re's every 32 months. Re's advantage is iOS requirement (13.0 vs 15.1). 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 Re against 5.0 for Sync. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Re ships an update every 32 months, Sync every 3 weeks. The most recent releases landed on June 11, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | Re | Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/recycle/id6443411858/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 32 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 22 MB | 41 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 12+ |
| Developer | [apporeal](https://appshunter.io/developer/1645345650) | [Wei Jian Wong](https://appshunter.io/developer/1805425419) |

## What reviewers say

### Re

[App page](https://appshunter.io/ios/app/recycle/id6443411858)

This app offers a private and free way to track personal data locally on your device. It features a customizable interface and easy data exporting for analysis or backup, with no ads or subscriptions.

**Highlights:** Free to use, no ads or subscriptions, Local data storage, no sign-up required, Track any data, anytime, Customizable interface, Easy data exporting (CSV)

**Features:** macOS Compatibility

**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 Re free?

Re 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, Re or Sync?

Re and Sync are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Re or Sync have ads?

Neither Re nor Sync shows ads.

### Which is updated more often, Re or Sync?

Re ships an update every 32 months, and Sync every 3 weeks. Most recently, Re was updated on June 11, 2026 and Sync on September 2, 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.*