# Zone 2 vs Trainingload.ai

Zone 2 and Trainingload.ai are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Zone 2 sells 1 one-off in-app purchase and Trainingload.ai sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Zone 2 | Trainingload.ai |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 6 MB | 85 MB |
| Requires iOS | 16.6 | **16.4** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Vu Tran](https://appshunter.io/developer/1890093055) | [立乾 史](https://appshunter.io/developer/1693572618) |

## What reviewers say

### Zone 2

[App page](https://appshunter.io/ios/app/zone-2-heart-rate-trainer/id6761515338)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $4.99 | one-time |


### Trainingload.ai

[App page](https://appshunter.io/ios/app/trainingloadai/id6801523660)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PLUS Monthly | $4.99 | per month |
| PRO Monthly | $9.99 | per month |


## Frequently asked questions

### Is Zone 2 free?

Zone 2 is free to download, with in-app purchases available.

### Is Trainingload.ai free?

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

### Do Zone 2 or Trainingload.ai have ads?

Neither Zone 2 nor Trainingload.ai 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.*