# StaySync vs GuestDiary

The clearest difference is in-app purchases: GuestDiary at none against StaySync's 2. StaySync's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. StaySync sells 2 in-app purchases, starting at $2.99 per month. GuestDiary asks for nothing beyond the download.

StaySync ships an update every 2 weeks, GuestDiary every 2 months. The most recent releases landed on September 9, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | StaySync | GuestDiary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Size | 2 MB | 61 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yasunori Tanaka](https://appshunter.io/developer/1323722042) | [AccuBook Ltd](https://appshunter.io/developer/1294650715) |

## What reviewers say

### StaySync

[App page](https://appshunter.io/ios/app/staysync/id6744273477)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1-Month Plan | $2.99 | per month |
| 1-Year Plan | $29.99 | per year |


### GuestDiary

[App page](https://appshunter.io/ios/app/guestdiary/id6758834306)

**In-app purchases:** none


## Frequently asked questions

### Is StaySync free?

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

### Is GuestDiary free?

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

### Do StaySync or GuestDiary have ads?

Neither StaySync nor GuestDiary shows ads.

### Which is updated more often, StaySync or GuestDiary?

StaySync ships an update every 2 weeks, and GuestDiary every 2 months. Most recently, StaySync was updated on September 9, 2026 and GuestDiary on September 20, 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.*