# Jstamp Store vs Sync

The clearest difference is in-app purchases: Jstamp Store at none against Sync's 5. Jstamp Store also leads on ads (none vs shown). Sync's advantage is update cadence (every 2 weeks vs every 6 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Sync sells 5 in-app purchases, starting at $4.99 per 7 days. Jstamp Store asks for nothing beyond the download.

Jstamp Store ships an update every 6 weeks, Sync every 2 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Jstamp Store | Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (21 ratings)](https://appshunter.io/ios/app/sync-relationship-astrology/id6757603357/reviews)** |
| Number of ratings | — | **21** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | — | Subscription |
| Size | 5 MB | 176 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [BOXTREE CO., LTD.](https://appshunter.io/developer/1253245928) | [Adapt Apps](https://appshunter.io/developer/1718118053) |

## What reviewers say

### Jstamp Store

[App page](https://appshunter.io/ios/app/jstamp-store/id6466597337)

**In-app purchases:** none


### Sync

[App page](https://appshunter.io/ios/app/sync-relationship-astrology/id6757603357)

This app generates daily relationship insights by comparing birth charts. It offers interpretations on attraction, communication, and tension to encourage thoughtful reflection on interactions. It's designed as a tool for personal awareness and relationship understanding.

**Highlights:** Daily relationship syncs, Birth chart comparison, Relationship indicator scores, Personalized guidance, Attraction, attachment, communication insights, Reflection on interactions

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FREE TRIAL | $4.99 | per 7 days |
| FREE TRIAL | $6.99 | per 7 days |
| Annual with a 3-day free trial | $19.99 | per year |
| Annual with a 3-day free trial | $29.99 | per year |
| Annual with a 3-day free trial | $39.99 | per year |


## Frequently asked questions

### Is Jstamp Store free?

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

### Is Sync free?

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

### Do Jstamp Store or Sync have ads?

Sync shows ads; Jstamp Store does not.

### Which is updated more often, Jstamp Store or Sync?

Jstamp Store ships an update every 6 weeks, and Sync every 2 weeks. Most recently, Jstamp Store was updated on October 27, 2026 and Sync on October 24, 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.*