SubKiller vs K
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SubKiller
Read full descriptionHide full description
Your subscriptions are bleeding you dry. Netflix, Spotify, cloud storage, fitness apps, productivity tools — each one seems small, but together they can easily top hundreds of dollars a year. Worse, some of them you haven't opened in months. The charges keep hitting anyway. SubKiller is a subscription manager that helps you see every charge, spot the ones you're wasting money on, and cut them without the hassle. What it does - Crystal-clear spending overview See all your subscriptions at a glance — monthly totals, annual projections, and an hourly wage equivalent so the true cost of each subscription is impossible to ignore. - Magic Scanner — add in seconds Screenshot a billing page. The app automatically reads the service name, amount, and billing cycle. Manual entry always works too. - Dust Alerts Get warned about subscriptions you're paying for but haven't used in weeks or months. There's always at least one. - One-tap cancellation Jump straight to the official cancellation page for any subscription — no more hunting through menus and buried settings. - Alternative suggestions See cheaper or free alternatives side-by-side for each subscription, so you can make a smarter call before you cancel or keep. - Kill record Every subscription you cancel is logged with how much you saved. Share the wins. Privacy first: Everything stays on your device. No account, no sign-in, no server uploads. ---------- Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: http://xsame.cn/app-009-SubKiller-privacy/ios/privacy_en.html
K
Read full descriptionHide full description
K-Card Reader is a focused Korean transit card balance checker for iPhone. Tap a supported physical KS X 6924 card with NFC to read practical details such as card family, card number, stored balance, issue date, valid-through date, recent trips, and local transaction history where the card exposes it. It is built for travelers, residents, and anyone who wants a quick way to check T-money, EZL/Cashbee, Climate Card, NAMANE, MOIBA, or K-Cash without hunting through station machines. Saved cards stay on your iPhone for fast review. Pro Mode is an optional $2/year subscription that removes ads, unlocks the hex parsing view, and backs up saved cards plus custom card-face images with your iCloud account. This is an unofficial utility and is not affiliated with transport operators, card issuers, or payment networks. It cannot top up cards, issue tickets, validate fares, or modify card data. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: K at 16.0 against SubKiller's 26.0. 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. SubKiller sells 3 in-app purchases, starting at $6.99 per year and K sells 1 in-app purchase, starting at $1.99 per year. Whichever you choose, the download price is not the number that matters.
SubKiller ships an update every 2 weeks, K weekly. The most recent releases landed on October 1, 2026 and September 26, 2026 respectively.
| Parameter | SubKiller | K |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | 迅 王 | Kitta Co. |
In-app purchases
SubKiller
- Pro Yearly7 Days trial$6.991 Year
- SubKiller Pro$4.99
- Pro Lifetime$19.99
K
- Pro Mode$1.991 Year









