# PLOPI vs OnceChat

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

Both are free to download. PLOPI sells 2 in-app purchases, starting at $3.99 per month. OnceChat asks for nothing beyond the download.

PLOPI ships an update every 2 days, OnceChat every 2 weeks. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | PLOPI | OnceChat |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Size | 58 MB | 37 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Beyond Imagine](https://appshunter.io/developer/1896774463) | [Kosei Takanashi](https://appshunter.io/developer/6777430042) |

## What reviewers say

### PLOPI

[App page](https://appshunter.io/ios/app/plopi-diary-for-two/id6771199721)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PLOPI PASS | $3.99 | per month |
| Standard Sticker Item | $0.49 | one-time |


### OnceChat

[App page](https://appshunter.io/ios/app/oncechat/id6777430040)

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

**In-app purchases:** none


## Frequently asked questions

### Is PLOPI free?

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

### Is OnceChat free?

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

### Do PLOPI or OnceChat have ads?

PLOPI shows ads; OnceChat does not.

### Which is updated more often, PLOPI or OnceChat?

PLOPI ships an update every 2 days, and OnceChat every 2 weeks. Most recently, PLOPI was updated on October 7, 2026 and OnceChat on October 6, 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.*