Comparison

Amazon Flex vs Stamps.com Mobile App

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Amazon Flex

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
Currently charting
Read full description

Deliver smiles Amazon delivers millions of items each year, delighting customers around the world. We’re investing in getting deliveries to customers faster all the time, and people like you can help make it happen. Grow with Amazon Are you looking for a delivery driving opportunity that provides great pay and a chance to deliver smiles to customers? The Amazon Flex app gives you access to technology that makes delivering packages easy. It’s simple Being a delivery driver is easy with the Amazon Flex app. We’ll guide you every step of the way, from sign up, to making your first delivery, to on-road support. Let's go! If you join us, you can build your own schedule, seven days a week. You can schedule work ahead or accept same-day offers when you have spare time. By downloading the app, you agree to receive communications from Amazon Flex, including emails and push notifications. You can opt out of receiving push notifications through your device settings. By using this app, you agree to Amazon’s Conditions of Use (www.amazon.com/conditionsofuse (http://www.amazon.com/conditionsofuse)) and Privacy Notice (www.amazon.com/privacy (http://www.amazon.com/privacy)). Requirements to Start: Age: You must be 21 or older. Vehicle Type: You need a 4-door, midsize sedan or larger vehicle (such as an SUV). Valid ID: Ensure you have a valid driver's license and a Social Security Number. Insurance: Maintain personal auto insurance that meets your local requirements. Bank Account: You'll need a checking or savings account. Followed by: By downloading the app, you agree to receive communications from Amazon Flex, including emails and push notifications. You can manage push notification preferences in your device settings. *Actual earnings will depend on your location, any tips you receive, how long it takes you to complete your deliveries, and other factors. By using this app, you agree to Amazon’s Conditions of Use (www.amazon.com/conditionsofuse (http://www.amazon.com/conditionsofuse)) and Privacy Notice (www.amazon.com/privacy (http://www.amazon.com/privacy)).

About

Stamps.com Mobile App

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
Read full description

Print discounted USPS® and UPS® stamps and shipping labels and track everything you mail and ship right from your phone. PRINT POSTAGE STAMPS AND SHIPPING LABELS • Compare First-Class Mail® and shipping rates from USPS, UPS, and more carriers. • Access deeply discounted rates not available in person or with a business account. • Print stamps, envelopes, or shipping labels from your phone using a WiFi printer. • No printer? Generate a QR code to save time with the carrier ADD AND MANAGE CONTACTS • Automatically verify recipient addresses for every item you mail or ship. • Access your address book to send on the go. Save recipients for future shipments.TRACK SHIPMENTS TO ENSURE DELIVERY • Share tracking information via email. • Check delivery status for everything you send.

Screenshots

Amazon Flex4 screens
Stamps.com Mobile App4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 6 level
Amazon Flex versus Stamps.com Mobile App: the parameters behind the verdict, then further details
ParameterAmazon FlexStamps.com Mobile App
PriceFreeFree
Rating4.7 (436K ratings) — better4.1 (599 ratings)
Positive reviews33.2% of reviews — better6.0% of reviews
Number of ratings436K — better599
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchasesAd-supported — better
Best chart rank#17 — better—
DevicesiPhoneiPhone, iPad — better
Requires iOS17.0 — better17.6
Further details — not scored
Size471 MB78 MB
Age rating17+17+
DeveloperAMZN Mobile LLCAuctane

Customer experience

Amazon Flex

All ratings435,717 ratings
Positive92.5%
Neutral2.9%
Negative4.6%
Written reviews3,538 reviews
Positive33.2%
Neutral10.2%
Negative56.6%

Stamps.com Mobile App

All ratings599 ratings
Positive77.6%
Neutral2.7%
Negative19.7%
Written reviews116 reviews
Positive6.0%
Neutral6.0%
Negative87.9%

User reviews

Amazon Flex

From 436K App Store ratings

What we love

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

Room to improve

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

Stamps.com Mobile App

From 599 App Store ratings

What we love

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

Room to improve

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

Bugs and requests

Amazon Flex

Reported bugs

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

Requested features

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

Stamps.com Mobile App

Reported bugs

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

Requested features

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

In-app purchases

None

Amazon Flex

No in-app purchases

None

Stamps.com Mobile App

No in-app purchases

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.

Other comparisons