Comparison

AirKey vs SubStop

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

Head to head
About

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.

Highlights
  • Tap card to phone for verification
  • Review transaction details
  • Confirm card legitimacy
  • Secure shopping experience
  • Learn about AirKey technology
Features
Read full description

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.

About

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.

Highlights
  • Private, manual subscription tracking
  • No bank linking required
  • One-tap cancel router
  • Offline billing cycle alarms
  • Pay once, own forever
Features
Read full description

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

AirKey3 screens
SubStop4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

AirKey is free to download; SubStop costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

Scorecard4 real differences · 6 level
AirKey versus SubStop: the parameters behind the verdict, then further details
ParameterAirKeySubStop
PriceFree — better$1.99
Rating2.3 (87 ratings)5.0 (1 ratings) — better
Positive reviews29.8% of reviews—
Number of ratings87 — better1
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhoneiPhone, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size58 MB27 MB
Age rating4+4+
DeveloperCapital One Services, LLCWilliam Shirley

Customer experience

AirKey

All ratings87 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews57 reviews
Positive29.8%
Neutral0.0%
Negative70.2%

SubStop

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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
Show 5 more
  • 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
Show 3 more
  • 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

None

AirKey

No in-app purchases

None

SubStop

No in-app purchases

Questions

Is AirKey free?
AirKey is free to download, with no in-app purchases.
Is SubStop free?
SubStop costs $1.99, with no in-app purchases.
Which has better reviews, AirKey or SubStop?
SubStop is rated higher. AirKey averages 2.3 out of 5 from 87 ratings, while SubStop averages 5.0 from 1 ratings.
Do AirKey or SubStop have ads?
Neither AirKey nor SubStop shows ads.

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