Comparison

NBKI Authenticator vs Casterly

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

Head to head
About

NBKI Authenticator

This application enhances your banking security and provides a seamless online experience. It allows you to check account balances, review recent transactions, and activate new cards. The app guides you through a secure activation process involving identity verification and one-time passcodes.

Highlights
  • Online fraud protection
  • Check account balance
  • View recent transactions
  • Activate newly issued cards
  • Secure online purchase completion
  • Biometric identity confirmation
Features
Read full description

To ensure you are protected from online fraud and give you the best banking experience possible, we will be releasing the NBKI Authenticator Application. In addition to the increased level of security provided, the application enables you to check your balance, your recent transactions and activate your newly issued cards. The NBKI Authenticator application activation process consists of the following steps: 1. Download and install the NBKI Authenticator Application. 2. Swipe through 3 welcome screens that explain the app’s features. 3. Enter your date of birth and mobile phone number. 4. Read and accept the bank’s privacy policy and terms and conditions. 5. A reference word will appear on the device instructing you to contact our dedicated activation support team on +47 21499979 for London customers or +33 1565 98600 for Paris customers. 6. The bank will perform an identity check and verify the reference word against the word shown on their system. 7. Once verified, the bank will trigger the delivery of a one-time passcode (OTP) by SMS to the client. If you have problem receiving the OTP via SMS, you can request it to your email address. 8. You enter the OTP and then set and confirm a personal code. 9. Once the personal code is set you will be completely registered. 10. To set your static password; please select ‘Safe online shopping’ within the settings in the app. Once you’re done with the activation, you will be able to complete your online purchases. For those wishing to confirm their identity biometrically, please ensure this is already set up on your phone. For any enquiries, please contact your Service Officer in London or Paris.

About

Casterly

Features
Read full description

Casterly is a whole-table calculator that lets you instantly analyse numbers you can see anywhere. Tables appear in PDFs, presentations, reports, printed documents, websites and screens. Analysing them often means manually entering numbers into a calculator or rebuilding the table in a spreadsheet. Casterly aims to remove that friction. Capture a table with your device camera, import an image from your photo library, or receive a screenshot from the Casterly Desktop companion. Casterly turns the table into an interactive page of numbers you can immediately calculate with directly. With minimal taps, build formulas that operate across entire rows and columns. Calculate period-on-period movements, contributions and margins, check whether figures total correctly, analyse trends and create your own calculations—all without opening a spreadsheet. When working on a computer, use Casterly Desktop to capture a table and securely and instantly send it to the mobile app. Your phone becomes a second screen, allowing you to analyse the table without constant context switching between applications on your computer. Casterly and its desktop companion operate entirely offline, and no information is sent to Casterly servers. Desktop transfers remain between your computer and paired phone. Casterly offers auto-renewing subscriptions. Payment will be charged to your Apple Account when you confirm your purchase. Your subscription renews automatically unless cancelled at least 24 hours before the end of the current billing period. You can manage or cancel your subscription through your App Store Account Settings after purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

NBKI Authenticator4 screens
Casterly4 screens

Verdict

The call

The clearest difference is in-app purchases: NBKI Authenticator at none against Casterly's 2. NBKI Authenticator also leads on iOS requirement (15.0 vs 17.6). Casterly's advantage is update cadence (every 4 days vs every 10 months). On price, ads and device support 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. Casterly sells 2 in-app purchases, starting at $5.99 per month. NBKI Authenticator asks for nothing beyond the download.

UpkeepUpdate frequency

NBKI Authenticator ships an update every 10 months, Casterly every 4 days. The most recent releases landed on October 13, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 6 level
NBKI Authenticator versus Casterly: the parameters behind the verdict, then further details
ParameterNBKI AuthenticatorCasterly
PriceFreeFree
Rating3.3 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 10 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size75 MB32 MB
Age rating4+4+
DeveloperNational Bank of KuwaitCASTERLY VERIFY LTD

In-app purchases

None

NBKI Authenticator

No in-app purchases

2 purchases

Casterly

Subscriptions2
  • Casterly Monthly$5.991 Month
  • Casterly Annual$59.991 Year

Questions

Is NBKI Authenticator free?
NBKI Authenticator is free to download, with no in-app purchases.
Is Casterly free?
Casterly is free to download, with in-app purchases available.
Do NBKI Authenticator or Casterly have ads?
Neither NBKI Authenticator nor Casterly shows ads.
Which is updated more often, NBKI Authenticator or Casterly?
NBKI Authenticator ships an update every 10 months, and Casterly every 4 days. Most recently, NBKI Authenticator was updated on October 13, 2026 and Casterly on October 25, 2026.

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