# HAY vs K2Stone

The clearest difference is device support: K2Stone at 3 against HAY's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HAY ships an update monthly, K2Stone every 4 weeks. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | HAY | K2Stone |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 weeks** |
| Monetization | Free | — |
| Size | 27 MB | 36 MB |
| Requires iOS | 16.1.1 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [WELCOME CO.,LTD.](https://appshunter.io/developer/1592040632) | [fei chang](https://appshunter.io/developer/1797916026) |

## What reviewers say

### HAY

[App page](https://appshunter.io/ios/app/hay/id6450727486)

Discover the latest product updates, exclusive content, and event information. This app allows you to shop, manage your membership, and save favorite items. Get access to special coupons and lifestyle ideas.

**Highlights:** Membership card for points and purchases, Product search and barcode scanning, Event and campaign notifications, Exclusive articles and lifestyle ideas, Favorite product and content registration, Coupon distribution

**In-app purchases:** none


### K2Stone

[App page](https://appshunter.io/ios/app/k2stone/id6742342964)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is HAY free?

HAY is free to download, with no in-app purchases.

### Is K2Stone free?

K2Stone is free to download, with no in-app purchases.

### Do HAY or K2Stone have ads?

Neither HAY nor K2Stone shows ads.

### Which is updated more often, HAY or K2Stone?

HAY ships an update monthly, and K2Stone every 4 weeks. Most recently, HAY was updated on October 1, 2026 and K2Stone on October 3, 2026.

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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.*