# Karina Grau vs HIIT Dual Timer

The clearest difference is update cadence: HIIT Dual Timer at every 5 days against Karina Grau's every 2 weeks. Karina Grau's advantage is iOS requirement (8.0 vs 13.0). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.0 for Karina Grau against 3.0 for HIIT Dual Timer. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Karina Grau ships an update every 2 weeks, HIIT Dual Timer every 5 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Karina Grau | HIIT Dual Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/karina-grau/id1071468032/reviews) | [3.0 (1 ratings)](https://appshunter.io/ios/app/hiit-dual-timer/id1505262060/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Free | Free |
| Size | 12 MB | 1 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ElQuincho IT](https://appshunter.io/developer/900186937) | [BWorby Works](https://appshunter.io/developer/546372907) |

## What reviewers say

### Karina Grau

[App page](https://appshunter.io/ios/app/karina-grau/id1071468032)

Track your diet evolution and access your consultation history directly from your mobile device. Stay connected with your nutritionist for seamless health management.

**Highlights:** Diet evolution tracking, Consultation history access, Mobile connectivity, Health management

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

**In-app purchases:** none


### HIIT Dual Timer

[App page](https://appshunter.io/ios/app/hiit-dual-timer/id1505262060)

This interval timer allows you to set custom durations for work and rest periods, and then repeat them for a specified number of rounds. It's designed for high-intensity interval training and other timed activities.

**Highlights:** Customizable work intervals, Customizable rest intervals, Set number of rounds, Simple start and go functionality, Ideal for HIIT workouts

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Karina Grau free?

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

### Is HIIT Dual Timer free?

HIIT Dual Timer is free to download, with no in-app purchases.

### Which has better reviews, Karina Grau or HIIT Dual Timer?

Karina Grau and HIIT Dual Timer are both rated 3.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Karina Grau or HIIT Dual Timer have ads?

Neither Karina Grau nor HIIT Dual Timer shows ads.

### Which is updated more often, Karina Grau or HIIT Dual Timer?

Karina Grau ships an update every 2 weeks, and HIIT Dual Timer every 5 days. Most recently, Karina Grau was updated on November 2, 2026 and HIIT Dual Timer on November 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.*