AirKey vs SubStop
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
SubStop
This app helps you manually track your subscriptions without linking bank accounts. It provides direct links to cancellation pages and sends offline alarms before billing cycles to prevent unwanted charges.
- Private, manual subscription tracking
- No bank linking required
- One-tap cancel router
- Offline billing cycle alarms
- Pay once, own forever
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Tired of finance apps asking for your bank login just to track your Netflix bill? SubStop is the 100% private, manual subscription tracker that puts you back in control. NO BANK LINKING REQUIRED Your data stays on your device. We don't read your emails, we don't connect to your bank, and we don't sell your data. THE 1-TAP CANCEL ROUTER Stop digging through confusing website menus to find the "Cancel" button. SubStop's Smart Router detects where your subscription is from and instantly takes you directly to the exact cancellation page. PAY ONCE. NO SUBSCRIPTIONS. You shouldn't have to pay a subscription to track your subscriptions. Pay once, own it forever. SMART OFFLINE ALARMS SubStop automatically calculates your billing cycles and sets secure, offline alarms on your device. Get notified 5 days and 24 hours before a charge hits so you never miss a cancellation window again.
Screenshots
Verdict
The clearest difference is price: AirKey at Free against SubStop's $1.99. AirKey also leads on ratings volume (87 vs 1). SubStop's advantage is rating (5.0 vs 2.3). On ads, in-app purchases, device support and iOS requirement 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
AirKey is free to download; SubStop costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SubStop holds the better App Store score, 5.0 against 2.3. That said, the two scores are not equally well evidenced: AirKey has 87 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | AirKey | SubStop |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 2.3 (87 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 29.8% of reviews | — |
| Number of ratings | 87 — better | 1 |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 58 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Capital One Services, LLC | William Shirley |
Customer experience
AirKey
SubStop
Bugs and 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
SubStop
Not enough reviews yet to summarise bugs or requests.
In-app purchases
AirKey
No in-app purchases
SubStop
No in-app purchases
Questions
Is AirKey free?
Is SubStop free?
Which has better reviews, AirKey or SubStop?
Do AirKey or SubStop have ads?
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