# PH System vs ふせんメモ

The clearest difference is in-app purchases: PH System at none against ふせんメモ's 3. ふせんメモ's advantage is update cadence (every 3 weeks vs every 15 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ふせんメモ sells 3 one-off in-app purchases. PH System asks for nothing beyond the download.

PH System ships an update every 15 months, ふせんメモ every 3 weeks. The most recent releases landed on September 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | PH System | ふせんメモ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 weeks** |
| Size | 25 MB | 10 MB |
| Requires iOS | 13 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [barnet Inc.](https://appshunter.io/developer/1203142034) | [Yuto Takebayashi](https://appshunter.io/developer/1102859227) |

## What reviewers say

### PH System

[App page](https://appshunter.io/ios/app/ph-system/id1438705034)

**Features:** macOS Compatibility

**In-app purchases:** none


### ふせんメモ

[App page](https://appshunter.io/ios/app/id1565766530)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| コーヒー | $1.99 | one-time |
| ランチ | $4.99 | one-time |
| ディナー | $9.99 | one-time |


## Frequently asked questions

### Is PH System free?

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

### Is ふせんメモ free?

ふせんメモ is free to download, with in-app purchases available.

### Do PH System or ふせんメモ have ads?

Neither PH System nor ふせんメモ shows ads.

### Which is updated more often, PH System or ふせんメモ?

PH System ships an update every 15 months, and ふせんメモ every 3 weeks. Most recently, PH System was updated on September 25, 2026 and ふせんメモ on October 10, 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.*