# SyncNote vs Sake Stamp Book

The clearest difference is in-app purchases: Sake Stamp Book at none against SyncNote's 4. SyncNote's advantage is ads (none vs shown) and iOS requirement (15.1 vs 18.6). On price, update cadence and device support there is nothing between them.

Both are free to download. SyncNote sells 4 in-app purchases, starting at $1.99 per month. Sake Stamp Book asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 18, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | SyncNote | Sake Stamp Book |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Weekly | Weekly |
| Size | 47 MB | 19 MB |
| Requires iOS | **15.1** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Kenya Ikeda](https://appshunter.io/developer/1648123572) | [RYUSUKE ISHIZAWA](https://appshunter.io/developer/1892546293) |

## What reviewers say

### SyncNote

[App page](https://appshunter.io/ios/app/syncnote-focus-planner/id6760971370)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SyncNote Calendar Pro | $1.99 | per month |
| SyncNote Calendar Pro | $9.99 | per 6 months |
| SyncNote Calendar Pro | $14.99 | per year |
| SyncNote Calendar Pro | $29.99 | one-time |


### Sake Stamp Book

[App page](https://appshunter.io/ios/app/sake-stamp-book/id6763914823)

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

**In-app purchases:** none


## Frequently asked questions

### Is SyncNote free?

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

### Is Sake Stamp Book free?

Sake Stamp Book is free to download, with no in-app purchases.

### Do SyncNote or Sake Stamp Book have ads?

Sake Stamp Book shows ads; SyncNote does not.

### Which is updated more often, SyncNote or Sake Stamp Book?

SyncNote ships an update weekly, and Sake Stamp Book weekly. Most recently, SyncNote was updated on September 18, 2026 and Sake Stamp Book on September 30, 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.*