# CoreWeight vs iyizen

The clearest difference is ads: iyizen at none against CoreWeight's shown. CoreWeight's advantage is update cadence (weekly vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. CoreWeight sells 3 in-app purchases, starting at $1.99 per month and iyizen sells 6 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

CoreWeight ships an update weekly, iyizen every 3 weeks. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | CoreWeight | iyizen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 17 MB | 34 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Hiroomi Kubo](https://appshunter.io/developer/1819954362) | [Melih Colpan](https://appshunter.io/developer/1870403430) |

## What reviewers say

### CoreWeight

[App page](https://appshunter.io/ios/app/coreweight/id6747131690)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Membership | $1.99 | per month |
| Annual Membership | $9.99 | per year |
| Lifetime License | $4.99 | one-time |


### iyizen

[App page](https://appshunter.io/ios/app/iyizen/id6758259398)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Athlete Pro Monthly | $14.99 | per month |
| Trainer Starter Monthly | $19.99 | per month |
| Trainer Unlimited Monthly | $29.99 | per month |
| Athlete Pro Yearly | $99.99 | per year |
| Trainer Starter Yearly | $149.99 | per year |
| Trainer Unlimited Yearly | $229.99 | per year |


## Frequently asked questions

### Is CoreWeight free?

CoreWeight is free to download, with in-app purchases available.

### Is iyizen free?

iyizen is free to download, with in-app purchases available.

### Do CoreWeight or iyizen have ads?

CoreWeight shows ads; iyizen does not.

### Which is updated more often, CoreWeight or iyizen?

CoreWeight ships an update weekly, and iyizen every 3 weeks. Most recently, CoreWeight was updated on October 9, 2026 and iyizen on October 7, 2026.

---

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