Comparison

Paychex Flex vs OnShift Mobile

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

Head to head
About

Paychex Flex

This app connects employers and employees to essential payroll and benefits functions. Employers can submit payroll, access reports, and view employee data. Employees can view pay stubs, manage retirement contributions, and access benefit details.

Highlights
  • Submit payroll on the go
  • Access payroll reports
  • View employee pay stubs and tax documents
  • Manage retirement contributions and investments
  • Access health and benefits information
  • Touch ID and Face ID authentication
Features
Currently charting
Read full description

The Paychex Flex app can be used by previously registered Paychex Flex (paychexflex.com) users. Paychex Flex keeps employers and employees connected to the most vital payroll and benefits features. Available features will vary and are dependent upon your company's plan options. EMPLOYERS Touch ID and Face ID authentication Submit payroll - Enter, review, and submit on the go. - Resume payrolls started on your tablet or desktop. Access vital information - All reports, including payroll reports and cash requirements. - Employee check stubs and tax documents. - Employee profiles, compensation, taxes, deductions, and time-off balances. - Retirement plan balances, participation rates, and employee eligibility. - Health and benefits carrier information and member guides. - Health and benefits employee enrollment and election information. EMPLOYEES Touch ID and Face ID authentication Access vital information - Check stubs and W2s. - Retirement balances, contributions, returns, and loans. - Update retirement contributions and investments. - Profile, compensation, taxes, deductions, and time-off balances. - Health, dental, and life insurance benefit details, deductions, and contact information. - FSA contributions, balances, claim, and reimbursement activity.

About

OnShift Mobile

Manage your work schedule, communicate with colleagues, and handle shift requests on the go. This app allows employees to view their schedule, respond to messages, and request time off. Schedulers can manage call-offs and communicate with staff efficiently.

Highlights
  • View schedule anytime, anywhere
  • Receive and reply to messages
  • Manage open shift notifications
  • Request shifts, fill-ins, and time off
  • Set communication preferences
  • Manage call-offs
  • Contact staff via Employee Directory
Features
Read full description

OnShift Customers: Manage your schedule anytime, anywhere with OnShift’s easy-to-use mobile app. Employees: Access and manage your schedule anytime. - View your schedule anytime, anywhere - Receive and reply to messages & open shift notifications - Request shifts, fill-ins & time off - Set communication preferences - View reward and performance history (OnShift Engage Customers Only) Schedulers: Quickly manage call-offs on-the-go! - Remove and log called-off employees - Send messages to available and qualified staff - Contact staff members directly using the app’s Employee Directory NOTE: The OnShift mobile app is available to all OnShift customers. Please contact support@onshift.com with any questions.

Screenshots

Paychex Flex4 screens
OnShift Mobile4 screens

Verdict

The call

The clearest difference is rating: Paychex Flex at 4.8 against OnShift Mobile's 1.4. Paychex Flex also leads on ratings volume (576K vs 258) and chart position (#36 vs unranked). OnShift Mobile's advantage is iOS requirement (12.2 vs 17.4). On price, review sentiment, 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

Paychex Flex holds the better App Store score, 4.8 against 1.4. That said, the two scores are not equally well evidenced: Paychex Flex has 576K ratings behind it against 258, so its average is the more settled of the two. Written reviews point the same way: 12% of Paychex Flex's written reviews are positive against 5% of OnShift Mobile's.

UpkeepUpdate frequency

Paychex Flex ships an update monthly, OnShift Mobile every 2 months. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

Scorecard5 real differences · 6 level
Paychex Flex versus OnShift Mobile: the parameters behind the verdict, then further details
ParameterPaychex FlexOnShift Mobile
PriceFreeFree
Rating4.8 (576K ratings) — better1.4 (258 ratings)
Positive reviews12.2% of reviews — better4.6% of reviews
Number of ratings576K — better258
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#36 — better—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.412.2 — better
Further details — not scored
Size330 MB59 MB
Age rating12+17+
DeveloperPaychex, IncOnShift, Inc.

Customer experience

Paychex Flex

All ratings576,013 ratings
Positive97.1%
Neutral2.0%
Negative1.0%
Written reviews713 reviews
Positive12.2%
Neutral5.9%
Negative81.9%

OnShift Mobile

All ratings118 ratings
Positive11.0%
Neutral2.5%
Negative86.4%
Written reviews238 reviews
Positive4.6%
Neutral1.3%
Negative94.1%

User reviews

Paychex Flex

From 576K App Store ratings

What we love

  • ⭐ Convenient access to payroll information
  • 🚀 Easy to use and navigate
  • 💻 Helpful for both employers and employees

Room to improve

  • 🐢 Slow and unresponsive app performance
  • 🐛 Frequent crashes and glitches
  • 🔒 Security issues with account access
  • 💸 Concerns about privacy and data sharing

OnShift Mobile

From 258 App Store ratings

What we love

  • 👍 Easy to use
  • 💡 Convenient for scheduling

Room to improve

  • 🐛 Frequent crashes and glitches
  • 🔍 Unreliable connectivity
  • ⏱️ Slow performance
  • 🔒 Login and password issues
  • 💸 Wallet/pay issues

Bugs and requests

Paychex Flex

Reported bugs

3 issues
  • Login screen freezes or fails to load
  • Time tracking inaccuracies and missed punches
  • Inconsistent app behavior across devices

Requested features

3 requests
  • Ability to edit time punches directly in the app
  • More detailed payroll information and reporting
  • Improved notification system for payroll updates

OnShift Mobile

Reported bugs

4 issues
  • Constant log-outs and login issues
  • Scheduling information not always accurate
  • Wallet/pay feature frequently not working
  • App freezes and crashes often

Requested features

5 requests
  • Improve stability and reliability
  • Add fingerprint/biometric login
  • Enhance scheduling and shift management features
  • Integrate with external calendars
  • Improve wallet/pay functionality

In-app purchases

None

Paychex Flex

No in-app purchases

None

OnShift Mobile

No in-app purchases

Questions

Is Paychex Flex free?
Paychex Flex is free to download, with no in-app purchases.
Is OnShift Mobile free?
OnShift Mobile is free to download, with no in-app purchases.
Which has better reviews, Paychex Flex or OnShift Mobile?
Paychex Flex is rated higher. Paychex Flex averages 4.8 out of 5 from 576K ratings, while OnShift Mobile averages 1.4 from 258 ratings.
Do Paychex Flex or OnShift Mobile have ads?
Neither Paychex Flex nor OnShift Mobile shows ads.
Which is updated more often, Paychex Flex or OnShift Mobile?
Paychex Flex ships an update monthly, and OnShift Mobile every 2 months. Most recently, Paychex Flex was updated on October 14, 2026 and OnShift Mobile on October 12, 2026.

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