# Postfun vs Diary for Pet

The clearest difference is review sentiment: Postfun at 70% against Diary for Pet's 0%. Postfun also leads on rating (4.4 vs 1.0) and ratings volume (61 vs 1). Diary for Pet's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price there is nothing between them.

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

Postfun holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Postfun has 61 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 70% of Postfun's written reviews are positive against 0% of Diary for Pet's.

Postfun ships an update every 6 weeks, Diary for Pet every 11 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Postfun | Diary for Pet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (61 ratings)](https://appshunter.io/ios/app/postfun-postcard-exchange/id1397899662/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/diary-for-pet/id1415552415/reviews) |
| Number of ratings | **61** | 1 |
| Positive reviews | **70.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 11 days** |
| Monetization | Ad-supported | **Free** |
| Size | 45 MB | 62 MB |
| Requires iOS | 16.6 | **10.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 9+ | 12+ |
| Developer | [Ilya Ostashkov](https://appshunter.io/developer/864012260) | [tadaki tokairin](https://appshunter.io/developer/527032245) |

## What reviewers say

### Postfun

[App page](https://appshunter.io/ios/app/postfun-postcard-exchange/id1397899662)

Connect with people globally by exchanging real paper postcards. Discover new friends, collect unique cards and stamps, and share a piece of your world. The more you send, the more you receive.

**Highlights:** Send and receive real postcards, Connect with international users, Collect cards and stamps, Discover new cultures, Global postcard community

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Postfun - Monthly subscription | $2.99 | per month |
| Postfun - Annual subscription | $29.99 | per year |


### Diary for Pet

[App page](https://appshunter.io/ios/app/diary-for-pet/id1415552415)

Create a digital diary for your pet, sharing photos and short videos. Build a following for your pet and aim for global popularity. Use it to track your pet's health and daily activities.

**Highlights:** Pet diary entries, Photo and video sharing, Follower system, Pet health tracking, Global popularity goal

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Postfun free?

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

### Is Diary for Pet free?

Diary for Pet is free to download, with no in-app purchases.

### Which has better reviews, Postfun or Diary for Pet?

Postfun is rated higher. Postfun averages 4.4 out of 5 from 61 ratings, while Diary for Pet averages 1.0 from 1 ratings.

### Do Postfun or Diary for Pet have ads?

Postfun shows ads; Diary for Pet does not.

### Which is updated more often, Postfun or Diary for Pet?

Postfun ships an update every 6 weeks, and Diary for Pet every 11 days. Most recently, Postfun was updated on October 24, 2026 and Diary for Pet 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.*