# AirKey vs SubStop

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.

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.

## The numbers

| Metric | AirKey | SubStop |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [2.3 (87 ratings)](https://appshunter.io/ios/app/airkey/id6471775266/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/substop-private-sub-tracker/id6759779894/reviews)** |
| Number of ratings | **87** | 1 |
| Positive reviews | 29.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | **Free** | Paid |
| Size | 58 MB | 27 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Capital One Services, LLC](https://appshunter.io/developer/339644101) | [William Shirley](https://appshunter.io/developer/1850582414) |

## What reviewers say

### AirKey

[App page](https://appshunter.io/ios/app/airkey/id6471775266)

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:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Works great internationally
- 👍 Convenient for travel
- 💡 Cool authentication feature
- 🚀 Fast card reading
- 🔒 Provides security

**What reviewers complain about**

- 🐛 Constantly stuck in demo mode
- 🐛 Does not work overseas
- 🐛 Fails to scan/tap card
- 🐛 Useless for online purchases
- 🐛 No customer service/support

**Reported bugs**

- Stuck in demo mode
- App does not work overseas
- Card scanning/tapping fails
- Verification process fails
- App is glitchy

**Requested features**

- Fix the demo loop issue
- Improve international functionality
- Provide alternative verification methods
- Offer better customer support
- Integrate with the main Capital One app


### SubStop

[App page](https://appshunter.io/ios/app/substop-private-sub-tracker/id6759779894)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*