AirKey vs Fynn
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.
Fynn
This app automatically scans your bank transactions to find and monitor recurring subscriptions and bills. It alerts you to price hikes, duplicate charges, and forgotten renewals, providing scripts to help you cancel or negotiate. It helps you track savings and manage recurring expenses without manual input.
- Scans bank transactions for recurring charges
- Monitors for price hikes with Price Shield
- Flags duplicate charges and billing errors
- Tracks free trials before auto-renewal
- Provides cancellation scripts and guidance
- Logs savings and progress toward goals
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Forgotten subscriptions, quiet price hikes and double charges hide in everyday spending. Fynn is a subscription tracker that spots them before they renew, so you decide what stays and what goes. WHAT FYNN CATCHES • Price hikes: a subscription that starts charging more than it used to • Forgotten subscriptions: recurring charges that keep billing month after month • Charged twice: the same charge showing up twice • Your total monthly subscription spend, in one number KNOW BEFORE IT RENEWS "Coming up" shows what renews in the next 7 days. Turn on renewal reminders to get a heads-up before a subscription or recurring bill charges you again. EVERY SUBSCRIPTION IN ONE PLACE Streaming, music, cloud storage, apps, memberships and other recurring payments, together in one list with one monthly total. NO BANK? NO PROBLEM Add subscriptions by hand and start tracking right away. Connect your bank later if you want Fynn to find recurring charges for you. READ-ONLY BY DESIGN Fynn connects to your bank through Plaid with read-only access. It can't move money, it never cancels anything and it never contacts providers. When you find a subscription you don't want, you cancel it directly with the provider. Fynn never takes a cut of anything you save. PRICING Fynn is free to download. Full access needs a Fynn subscription: $9.99/month with a 1-week free trial, or $59.99/year. Payment is charged to your Apple ID account when you confirm your purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the period ends. Manage or cancel anytime in your Apple ID account settings. Privacy Policy: https://fynnfinance-privacy-policy.carrd.co/ Terms: https://fynnfinance.carrd.co/
Screenshots
Verdict
The clearest difference is review sentiment: Fynn at 100% against AirKey's 30%. Fynn also leads on rating (5.0 vs 2.3). AirKey's advantage is in-app purchases (none vs 2) and ratings volume (89 vs 1). On price, update cadence, 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
Both are free to download. Fynn sells 2 in-app purchases, starting at $9.99 per month. AirKey asks for nothing beyond the download.
Fynn holds the better App Store score, 5.0 against 2.3. That said, the two scores are not equally well evidenced: AirKey has 89 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 30% of AirKey's written reviews are positive against 100% of Fynn's.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.
| Parameter | AirKey | Fynn |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (89 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 29.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 89 — better | 1 |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 58 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Capital One | Camazita Ramlall |
Customer experience
AirKey
Fynn
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
Fynn
Not enough reviews yet to summarise bugs or requests.
In-app purchases
AirKey
No in-app purchases
Fynn
- Fynn Pro Monthly7 Days trial$9.991 Month
- Fynn Pro Annual7 Days trial$59.991 Year









