Comparison

USPS Mobile® vs Amazon Flex

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

Head to head
About

USPS Mobile®

Manage your mail and packages on the go. Track shipments, calculate postage, find nearby postal locations, and schedule pickups. Access digital mail previews and request mail holds for convenient postal services.

Highlights
  • Track shipments
  • Calculate shipping prices
  • Find Post Office locations
  • Schedule package pickups
  • Request mail holds
  • Digital mail preview
Currently charting
Read full description

Access popular USPS.com® tools on the go with the “USPS Mobile® app: calculate shipping prices (limitations apply), find a Post Office™, look up a ZIP Code™, schedule a next-day pickup, request USPS to hold your mail, access Informed Delivery® to track packages and digitally preview incoming mail, and more. WHAT CAN IT DO? The USPS Mobile app allows you to: • Check the status of shipments sent using Priority Mail®, Priority Mail Express®, Certified Mail®, and certain other delivery services. Nickname your shipments and sign up for text and email alerts to notify you of the delivery status. • Calculate a Domestic or International Price to determine how much postage you will need when you ship a letter, card, large envelope, or package (limitations apply). Choose retail or online pricing, add any extra services you need, and view the total, too. • Find USPS® Locations when you need to get to a Post Office™, Self-Service Kiosk (APC®) or collection box with an easy-to-filter locator. The USPS Mobile app uses your device’s GPS to show your closest options on a map, along with their Regular Hours, Special Hours and Last Collection Times, and provides mapped results with driving, walking, or transit directions. • Look up a ZIP Code™ for any U.S. or Canadian address. • Schedule a free next-day pickup and have your Letter Carrier pick up Priority Mail®, Priority Mail Express®, Global Express Guaranteed®, or Merchandise Return Services shipments from your home or office during regular mail delivery. • Request Hold Mail Service while you’re away, and we’ll keep your mail at your local Post Office™ for you to pick up or be delivered by your carrier when you return. • Scan the barcode on shipping labels with your device’s camera (Note: this function is not available on iPad 1 and iPod Touch models without rear-facing cameras). The app recognizes the shipment and stores the label number, so you can stay on top of delivery status. Link to Informed Delivery to track packages and digitally preview your household’s incoming mail arriving soon; view grayscale images of the exterior, address side of letter-sized mailpieces.

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)).

Screenshots

USPS Mobile®1 screens
Amazon Flex4 screens

Verdict

The call

The clearest difference is update cadence: Amazon Flex at every 2 weeks against USPS Mobile®'s every 2 months. USPS Mobile®'s advantage is monetization model (free vs free with in-app purchases) and review sentiment (48% vs 33%). On price, rating, 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

On the App Store both sit at effectively the same score — 4.8 for USPS Mobile® against 4.7 for Amazon Flex. Both are backed by a comparable volume of ratings — 1.6M and 436K respectively. Written reviews are what separate them: 48% of USPS Mobile®'s written reviews are positive against 33% of Amazon Flex's.

UpkeepUpdate frequency

USPS Mobile® ships an update every 2 months, Amazon Flex every 2 weeks. Both last shipped on September 24, 2026.

Scorecard4 real differences · 7 level
USPS Mobile® versus Amazon Flex: the parameters behind the verdict, then further details
ParameterUSPS Mobile®Amazon Flex
PriceFreeFree
Rating4.8 (1.6M ratings) — better4.7 (436K ratings)
Positive reviews48.3% of reviews — better33.2% of reviews
Number of ratings1.6M — better436K
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
Best chart rank#38#17 — better
DevicesiPhoneiPhone
Requires iOS17.017.0
Further details — not scored
Size20 MB471 MB
Age rating4+17+
DeveloperUnited States Postal ServiceAMZN Mobile LLC

Customer experience

USPS Mobile®

All ratings1,556,661 ratings
Positive94.8%
Neutral2.2%
Negative3.0%
Written reviews2,298 reviews
Positive48.3%
Neutral6.8%
Negative44.8%

Amazon Flex

All ratings435,717 ratings
Positive92.5%
Neutral2.9%
Negative4.6%
Written reviews3,533 reviews
Positive33.2%
Neutral10.2%
Negative56.6%

User reviews

USPS Mobile®

From 1.6M App Store ratings

What we love

  • 🚀 Lightning-fast app
  • 🔒 Robust security features
  • 👍 Convenient for tracking packages
  • 💡 Helpful informed delivery feature

Room to improve

  • 🐛 Buggy and glitchy
  • 🔄 Constantly redirecting to website
  • 🤔 Confusing user interface
  • 🔍 Lacking package management features

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

Bugs and requests

USPS Mobile®

Reported bugs

4 issues
  • Tracking not working after updates
  • Unable to delete delivered packages
  • App crashes when trying to track
  • Inconsistent package status updates

Requested features

4 requests
  • Allow renaming of tracking numbers
  • Implement stay-logged-in functionality
  • Add push notifications for package updates
  • Integrate more USPS services natively

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

In-app purchases

None

USPS Mobile®

No in-app purchases

None

Amazon Flex

No in-app purchases

Questions

Is USPS Mobile® free?
USPS Mobile® is free to download, with no in-app purchases.
Is Amazon Flex free?
Amazon Flex is free to download, with no in-app purchases.
Which has better reviews, USPS Mobile® or Amazon Flex?
USPS Mobile® is rated higher. USPS Mobile® averages 4.8 out of 5 from 1.6M ratings, while Amazon Flex averages 4.7 from 436K ratings.
Do USPS Mobile® or Amazon Flex have ads?
Neither USPS Mobile® nor Amazon Flex shows ads.
Which is updated more often, USPS Mobile® or Amazon Flex?
USPS Mobile® ships an update every 2 months, and Amazon Flex every 2 weeks. Most recently, USPS Mobile® was updated on September 24, 2026 and Amazon Flex on September 24, 2026.
Which is more popular, USPS Mobile® or Amazon Flex?
USPS Mobile® currently peaks at #38 in the App Store charts, and Amazon Flex at #17. Chart position reflects recent download velocity rather than total install base.

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