CTS Assistant vs AirKey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CTS Assistant
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CTS Assistant is a closing cost app that provides you with the tools you need for your next listing and when meeting with prospective buyers. It is designed for Real Estate Professionals with calculators, customizable marketing materials and quick access to generate buyer estimates and seller net sheets. Key features include: Helpful Calculators: Monthly affordability, renting vs. buying, loan qualifier and sell to net. Buyer and Seller Net Sheets: Easily generate net sheets to understand the costs of buying or selling a home. Save Net Sheets and Estimates: Sort through and access previous net sheets and estimates. Easily Share Generated Net Sheets: Quickly generate net sheets to print or share via email or text. Fully Customized Marketing Materials: Create custom marketing materials for buyers or sellers. Training Tutorials to Get Started: Learn how to get started and utilize the app to its full potential.
AirKey
Verify your identity by tapping your AirKey-enabled card to your phone. Learn about the technology and review transaction details for secure purchases. Requires an AirKey-enabled card and internet access.
- Tap card to phone for verification
- Review transaction details
- Confirm card legitimacy
- Secure shopping experience
- Learn about AirKey technology
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AirKey helps customers verify their identity by simply tapping their AirKey-enabled card to their phone. With the AirKey app, you can learn more about how the AirKey technology works and try it out. All you need is an AirKey-enabled card to get started (just look for the key symbol on the back of your card to determine if your card is AirKey-enabled). What else can you do on the AirKey app? For certain transactions, you can • Review transaction details such as the merchant name, transaction amount, and card details to confirm its legitimacy and • Tap your AirKey-enabled card to your phone to prove the card is in your possession - after successfully authenticating, you continue your shopping experience Internet access is needed to use the AirKey app. Check with your Internet service provider for details of specific fees and charges. Service outages may occur. Features may not be available to all customers. Actual experiences may differ from those depicted. Additional terms and limitations apply.
Screenshots
Verdict
The clearest difference is device support: CTS Assistant at 3 against AirKey's 1. 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.
| Parameter | CTS Assistant | AirKey |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.3 (87 ratings) — better |
| Positive reviews | — | 29.8% of reviews |
| Number of ratings | — | 87 — better |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 124 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Western Auxiliary Corporation | Capital One Services, LLC |
Bugs and requests
CTS Assistant
Not enough reviews yet to summarise bugs or requests.
AirKey
Reported bugs
10 issues- Stuck in demo mode
- App does not work overseas
- Card scanning/tapping fails
- Verification process fails
- App is glitchy
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- Does not communicate with payment site
- Requires switching country settings
- Not functional in certain regions (UK, South Korea, Asia)
- Transaction verification fails
- Requires Safari and another app
Requested features
8 requests- Fix the demo loop issue
- Improve international functionality
- Provide alternative verification methods
- Offer better customer support
- Integrate with the main Capital One app
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- Fix the card scanning/tapping functionality
- Ensure app works outside the US
- Make the verification process less cumbersome
In-app purchases
CTS Assistant
No in-app purchases
AirKey
No in-app purchases
Questions
Is CTS Assistant free?
Is AirKey free?
Do CTS Assistant or AirKey have ads?
Which is updated more often, CTS Assistant or AirKey?
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