# Stamps.com Mobile App vs Block’s Marble Auctions

The clearest difference is rating: Block’s Marble Auctions at 5.0 against Stamps.com Mobile App's 4.1. Block’s Marble Auctions also leads on monetization model (free vs ad-supported) and iOS requirement (12.0 vs 17.6). Stamps.com Mobile App's advantage is update cadence (every 3 weeks vs every 11 months) and ratings volume (626 vs 1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Block’s Marble Auctions holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Stamps.com Mobile App has 626 ratings behind it against 1, so its average is the more settled of the two.

Stamps.com Mobile App ships an update every 3 weeks, Block’s Marble Auctions every 11 months. The most recent releases landed on October 30, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Stamps.com Mobile App | Block’s Marble Auctions |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (626 ratings)](https://appshunter.io/ios/app/stampscom-mobile-app/id1591959884/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/blocks-marble-auctions/id6739694618/reviews)** |
| Number of ratings | **626** | 1 |
| Positive reviews | 6.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 11 months |
| Monetization | Ad-supported | **Free** |
| Size | 81 MB | 55 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Auctane](https://appshunter.io/developer/638778966) | [Bidsquare](https://appshunter.io/developer/1575528389) |

## What reviewers say

### Stamps.com Mobile App

[App page](https://appshunter.io/ios/app/stampscom-mobile-app/id1591959884)

Print discounted USPS and UPS postage stamps and shipping labels directly from your phone. Compare rates, manage contacts, and track all your shipments to ensure delivery. Save time and money by avoiding post office lines.

**Highlights:** Print discounted USPS/UPS stamps and labels, Compare shipping rates, Track shipments, Verify recipient addresses, Generate QR codes for no-printer option

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy and simple to use
- 📦 Able to print shipping labels

**What reviewers complain about**

- 🐛 App crashes and glitches
- 💰 Unexpected charges and hidden fees
- 🔒 Difficult to cancel subscription
- 📝 Confusing and cumbersome UI
- 🚫 Unreliable and untrustworthy service

**Reported bugs**

- Login issues and account lockouts
- Printing failures and label generation problems
- Tracking information not updating properly
- Inconsistent behavior across web and mobile

**Requested features**

- Ability to print non-machinable stamps
- Option to copy/paste full addresses
- Landscape mode support for tablets
- Syncing of contacts and address book


### Block’s Marble Auctions

[App page](https://appshunter.io/ios/app/blocks-marble-auctions/id6739694618)

Participate in live marble auctions from your mobile device. Preview upcoming lots, track your bidding history, and receive notifications for items of interest. This app allows you to bid on antique, vintage, and contemporary marbles and related collectibles.

**Highlights:** Preview upcoming lots, Watch live auctions, Bid in real-time, Quick registration, Track bidding history, Push notifications for items of interest

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stamps.com Mobile App free?

Stamps.com Mobile App is free to download, with no in-app purchases.

### Is Block’s Marble Auctions free?

Block’s Marble Auctions is free to download, with no in-app purchases.

### Which has better reviews, Stamps.com Mobile App or Block’s Marble Auctions?

Block’s Marble Auctions is rated higher. Stamps.com Mobile App averages 4.1 out of 5 from 626 ratings, while Block’s Marble Auctions averages 5.0 from 1 ratings.

### Do Stamps.com Mobile App or Block’s Marble Auctions have ads?

Neither Stamps.com Mobile App nor Block’s Marble Auctions shows ads.

### Which is updated more often, Stamps.com Mobile App or Block’s Marble Auctions?

Stamps.com Mobile App ships an update every 3 weeks, and Block’s Marble Auctions every 11 months. Most recently, Stamps.com Mobile App was updated on October 30, 2026 and Block’s Marble Auctions on October 21, 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.*