# Doctonica vs 4x4 HIIT

Doctonica and 4x4 HIIT are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

Doctonica ships an update monthly, 4x4 HIIT every 2 months. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Doctonica | 4x4 HIIT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Size | 50 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 17+ | 17+ |
| Developer | [ANDAVEO LTD](https://appshunter.io/developer/1623571819) | [SIA Valabijs](https://appshunter.io/developer/1853404704) |

## What reviewers say

### Doctonica

[App page](https://appshunter.io/ios/app/doctonica/id1623581078)

**Features:** macOS Compatibility

**In-app purchases:** none


### 4x4 HIIT

[App page](https://appshunter.io/ios/app/4x4-hiit/id6755360081)

**In-app purchases:** none


## Frequently asked questions

### Is Doctonica free?

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

### Is 4x4 HIIT free?

4x4 HIIT is free to download, with no in-app purchases.

### Do Doctonica or 4x4 HIIT have ads?

Neither Doctonica nor 4x4 HIIT shows ads.

### Which is updated more often, Doctonica or 4x4 HIIT?

Doctonica ships an update monthly, and 4x4 HIIT every 2 months. Most recently, Doctonica was updated on November 3, 2026 and 4x4 HIIT on October 28, 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.*