# Amazon Flex vs Stamps.com Mobile App

The clearest difference is rating: Amazon Flex at 4.7 against Stamps.com Mobile App's 4.1. Amazon Flex also leads on review sentiment (33% vs 6%) and ratings volume (436K vs 599). Stamps.com Mobile App's advantage is monetization model (ad-supported vs free with in-app purchases). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Amazon Flex holds the better App Store score, 4.7 against 4.1. That said, the two scores are not equally well evidenced: Amazon Flex has 436K ratings behind it against 599, so its average is the more settled of the two. Written reviews point the same way: 33% of Amazon Flex's written reviews are positive against 6% of Stamps.com Mobile App's.

Amazon Flex ships an update every 2 weeks, Stamps.com Mobile App every 3 weeks. The most recent releases landed on September 25, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Amazon Flex | Stamps.com Mobile App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (436K ratings)](https://appshunter.io/ios/app/amazon-flex/id1454725763/reviews)** | [4.1 (599 ratings)](https://appshunter.io/ios/app/stampscom-mobile-app/id1591959884/reviews) |
| Number of ratings | **436K** | 599 |
| Positive reviews | **33.2% of reviews** | 6.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Best chart rank | **#17** | — |
| Size | 471 MB | 78 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [AMZN Mobile LLC](https://appshunter.io/developer/297606954) | [Auctane](https://appshunter.io/developer/638778966) |

## What reviewers say

### Amazon Flex

[App page](https://appshunter.io/ios/app/amazon-flex/id1454725763)

**Currently charting:** #17 Top Free · Business (US App Store)

Earn money by delivering packages for a major online retailer. This app provides the technology to make deliveries easy, guiding you from sign-up to your first delivery. Build your own schedule and accept offers when it suits you.

**Highlights:** Package delivery opportunities, Flexible scheduling, In-app delivery guidance, On-road support, Schedule work ahead or same-day

**In-app purchases:** none

**What reviewers like**

- 👍 Great app
- 🚀 Good opportunity
- 💡 Flexible scheduling
- 👍 Decent pay

**What reviewers complain about**

- 🐛 Buggy app
- 🗺️ Poor navigation
- 🤖 Issues with bots/automation
- 💰 Low pay after expenses
- 🚨 Safety concerns

**Reported bugs**

- App crashes and freezes
- GPS issues and wrong directions
- Trouble with check-in and scanning
- Inconsistent earnings reporting

**Requested features**

- Update app frequently
- Improve mapping and navigation
- Provide more transparency on routes
- Improve customer support
- Implement dark mode


### 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


## Frequently asked questions

### Is Amazon Flex free?

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

### Is Stamps.com Mobile App free?

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

### Which has better reviews, Amazon Flex or Stamps.com Mobile App?

Amazon Flex is rated higher. Amazon Flex averages 4.7 out of 5 from 436K ratings, while Stamps.com Mobile App averages 4.1 from 599 ratings.

### Do Amazon Flex or Stamps.com Mobile App have ads?

Neither Amazon Flex nor Stamps.com Mobile App shows ads.

### Which is updated more often, Amazon Flex or Stamps.com Mobile App?

Amazon Flex ships an update every 2 weeks, and Stamps.com Mobile App every 3 weeks. Most recently, Amazon Flex was updated on September 25, 2026 and Stamps.com Mobile App on September 23, 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.*