# World Stamp vs Pet Weight Tracker

The clearest difference is in-app purchases: World Stamp at none against Pet Weight Tracker's 4. World Stamp also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Pet Weight Tracker sells 4 in-app purchases, starting at $2.99 per 7 days. World Stamp asks for nothing beyond the download.

World Stamp ships an update every 2 months, Pet Weight Tracker every 5 weeks. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | World Stamp | Pet Weight Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/pet-weight-tracker-log/id6772563969/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 43 MB | 44 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Furkan Ozgurluk](https://appshunter.io/developer/1871483624) | [Vasilii Polovnikov](https://appshunter.io/developer/1716165883) |

## What reviewers say

### World Stamp

[App page](https://appshunter.io/ios/app/world-stamp/id6760903607)

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

**In-app purchases:** none


### Pet Weight Tracker

[App page](https://appshunter.io/ios/app/pet-weight-tracker-log/id6772563969)

Monitor your pet's weight progression with detailed charts and historical data. Easily share insights with your veterinarian and preserve cherished memories with photos. Ideal for owners focused on their pet's health and well-being.

**Highlights:** Track multiple pets, Weight change delta, Full history chart, PDF export for vet, Pet photos for memories

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium · 1 week | $2.99 | per 7 days |
| Premium · 1 month | $3.99 | per month |
| Premium · 1 year | $9.99 | per year |
| Premium · Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is World Stamp free?

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

### Is Pet Weight Tracker free?

Pet Weight Tracker is free to download, with in-app purchases available.

### Do World Stamp or Pet Weight Tracker have ads?

Neither World Stamp nor Pet Weight Tracker shows ads.

### Which is updated more often, World Stamp or Pet Weight Tracker?

World Stamp ships an update every 2 months, and Pet Weight Tracker every 5 weeks. Most recently, World Stamp was updated on October 24, 2026 and Pet Weight Tracker on October 22, 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.*