Comparison

Firstmark Credit Union vs Security Service Mobile

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

Head to head
About

Firstmark Credit Union

Manage your finances on the go with this banking app. Securely access your accounts, transfer funds, pay bills, and deposit checks. It also offers features for loan applications, card controls, and finding nearby financial centers.

Highlights
  • Secure login (Touch ID/facial recognition)
  • View account activity and balances
  • Fund transfers
  • Bill pay
  • Mobile check deposit
  • Loan applications
  • Debit/Credit card controls
Features
Read full description

Features and Services: • Secure login with Touch ID or facial recognition • View account activity and balances • Transfer funds to and from connected accounts • Pay bills • Link external accounts • Deposit checks with Mobile Deposit • View Electronic Statements • Connect with Firstmark by message or phone • Manage account and security alerts • Locate the nearest Firstmark financial center or free ATM • Apply for loans or open additional accounts • Make loan payments • Debit and Credit Card controls • View Mortgage loan account activity • View credit score

About

Security Service Mobile

Manage your bank accounts securely from your mobile device. View balances, transfer funds, deposit checks, and pay bills with ease. Access helpful resources like branch locators and credit score information.

Highlights
  • View account balances and transactions
  • Transfer money between accounts
  • Deposit checks via mobile
  • Schedule and pay bills
  • Freeze/unfreeze debit and credit cards
  • Set up account alerts
  • Find branches and ATMs
Features
Read full description

Bank anywhere with Security Service Mobile. View your balance, transfer money, deposit checks, and pay bills in a few simple steps. It’s an easy, secure way to manage your accounts. Manage Your Accounts • View balances and transactions • Transfer money • Deposit checks • Set up alerts • Debit and credit card freeze/unfreeze • Set up a travel notice Make Payments & Transfers • Schedule, edit, or cancel payments with Bill Pay • Transfer money between your accounts • Set up credit card autopay • Send and receive money with Zelle® Helpful Resources • Branch and ATM locator • Direct access to your Power Protected Checking benefits • ID Monitoring access* • Credit score access* • Mobile phone claim access* *Power Protected Checking account holders only. Federally insured by NCUA. Standard data and text messaging rates may apply. Alerts are based upon the settings you establish. Mobile check deposit is subject to eligibility and qualification requirements. Most alerts are provided real-time, but some may not trigger an immediate alert. Security Service is not responsible for an alert not being sent or received. Standard data and text messaging rates may apply. Copyright © Security Service Federal Credit Union. All rights reserved. Zelle® and the Zelle® related marks are wholly owned by Early Warning Services, LLC and are used herein under license.

Screenshots

Firstmark Credit Union4 screens
Security Service Mobile4 screens

Verdict

The call

The clearest difference is review sentiment: Firstmark Credit Union at 85% against Security Service Mobile's 7%. Firstmark Credit Union also leads on rating (4.9 vs 2.6) and ratings volume (13K vs 1.2K). Security Service Mobile's advantage is update cadence (every 3 months vs every 6 months) and device support (4 vs 2). On price, ads, in-app purchases and monetization model 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

Firstmark Credit Union holds the better App Store score, 4.9 against 2.6. That said, the two scores are not equally well evidenced: Firstmark Credit Union has 13K ratings behind it against 1.2K, so its average is the more settled of the two. Written reviews point the same way: 85% of Firstmark Credit Union's written reviews are positive against 7% of Security Service Mobile's.

UpkeepUpdate frequency

Firstmark Credit Union ships an update every 6 months, Security Service Mobile every 3 months. The most recent releases landed on November 5, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Firstmark Credit Union versus Security Service Mobile: the parameters behind the verdict, then further details
ParameterFirstmark Credit UnionSecurity Service Mobile
PriceFreeFree
Rating4.9 (13K ratings) — better2.6 (1.2K ratings)
Positive reviews85.1% of reviews — better7.3% of reviews
Number of ratings13K — better1.2K
Update frequencyEvery 6 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod, Apple Watch — better
Requires iOS16.015.6 — better
Further details — not scored
Size31 MB47 MB
Age rating4+4+
DeveloperFirstmark Credit UnionSecurity Service Federal Credit Union

Customer experience

Firstmark Credit Union

All ratings12,485 ratings
Positive98.1%
Neutral1.1%
Negative0.8%
Written reviews114 reviews
Positive85.1%
Neutral2.6%
Negative12.3%

Security Service Mobile

All ratings1,167 ratings
Positive36.1%
Neutral5.7%
Negative58.3%
Written reviews205 reviews
Positive7.3%
Neutral8.3%
Negative84.4%

User reviews

Firstmark Credit Union

From 13K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Convenient banking
  • 🔒 Secure transactions
  • 💡 Helpful features (e.g. credit score tracking)

Room to improve

  • 🐛 Buggy and laggy app
  • 🔍 Limited transaction history visibility
  • 💤 Outdated technology (no Zelle support)

Security Service Mobile

From 1.2K App Store ratings

What we love

  • 👍 Works great
  • 🚀 Seamless and intuitive
  • 💡 Awesome mobile deposit feature

Room to improve

  • 🐛 Constant login issues
  • 🐛 Unreliable and frequently crashes
  • 🐛 Slow and unresponsive
  • 🐛 Buggy after updates
  • 🐛 Cannot log in or access accounts

Bugs and requests

Firstmark Credit Union

Reported bugs

3 issues
  • Face ID/fingerprint login issues
  • Inconsistent check deposit functionality
  • Incorrect transaction categorization

Requested features

3 requests
  • Ability to view full transaction history
  • Option to add notes to transactions
  • Twice-per-month bill pay scheduling

Security Service Mobile

Reported bugs

5 issues
  • Login screen freezes
  • Face ID/biometrics not working consistently
  • Delayed or missing transaction updates
  • Incorrect account balances shown
  • Mobile check deposit not functioning properly

Requested features

6 requests
  • Dark mode option
  • Ability to transfer between family member accounts
  • Improve transaction details and history
  • Better organization and customization of accounts
  • Streamline login and authentication process
Show 1 more
  • Improve mobile check deposit functionality

In-app purchases

None

Firstmark Credit Union

No in-app purchases

None

Security Service Mobile

No in-app purchases

Questions

Is Firstmark Credit Union free?
Firstmark Credit Union is free to download, with no in-app purchases.
Is Security Service Mobile free?
Security Service Mobile is free to download, with no in-app purchases.
Which has better reviews, Firstmark Credit Union or Security Service Mobile?
Firstmark Credit Union is rated higher. Firstmark Credit Union averages 4.9 out of 5 from 13K ratings, while Security Service Mobile averages 2.6 from 1.2K ratings.
Do Firstmark Credit Union or Security Service Mobile have ads?
Neither Firstmark Credit Union nor Security Service Mobile shows ads.
Which is updated more often, Firstmark Credit Union or Security Service Mobile?
Firstmark Credit Union ships an update every 6 months, and Security Service Mobile every 3 months. Most recently, Firstmark Credit Union was updated on November 5, 2026 and Security Service Mobile on November 3, 2026.

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