# HIIToMeter high intensity interval training meter vs SunUp Reminder

The clearest difference is update cadence: SunUp Reminder at daily against HIIToMeter high intensity interval training meter's every 5 days. SunUp Reminder also leads on ratings volume (7 vs 1). HIIToMeter high intensity interval training meter's advantage is device support (3 vs 1) and iOS requirement (10.0 vs 26.0). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for HIIToMeter high intensity interval training meter against 5.0 for SunUp Reminder. That said, the two scores are not equally well evidenced: SunUp Reminder has 7 ratings behind it against 1, so its average is the more settled of the two.

HIIToMeter high intensity interval training meter ships an update every 5 days, SunUp Reminder daily. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | HIIToMeter high intensity interval training meter | SunUp Reminder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/hiitometer-high-intensity-interval-training-meter/id1255714847/reviews) | [5.0 (7 ratings)](https://appshunter.io/ios/app/sunup-reminder/id6449208224/reviews) |
| Number of ratings | 1 | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | **Daily** |
| Monetization | Free | Free |
| Size | 26 MB | 4 MB |
| Requires iOS | **10.0** | 26.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shrujan Hanumantharayappa](https://appshunter.io/developer/1255714846) | [Jan van Rensburg](https://appshunter.io/developer/1688121173) |

## What reviewers say

### HIIToMeter high intensity interval training meter

[App page](https://appshunter.io/ios/app/hiitometer-high-intensity-interval-training-meter/id1255714847)

This app provides a visual guide for high-intensity interval training, helping users maximize fat burning and metabolism. It offers customizable workout durations and intensities, with Apple Health integration for heart rate data and Apple Watch support for real-time feedback.

**Highlights:** Visual progress tracking for HIIT, Customizable workout durations (10, 20, 30 mins), Adjustable intensity levels (low, medium, high), Apple Health integration for heart rate, Apple Watch companion app support, Haptic feedback for intensity changes

**Features:** Apple Watch app

**In-app purchases:** none


### SunUp Reminder

[App page](https://appshunter.io/ios/app/sunup-reminder/id6449208224)

Automates a key habit recommended by Dr. Andrew Huberman: getting morning sunlight. It sends precise, location-based sunrise reminders to help you establish a healthy circadian rhythm and improve sleep.

**Highlights:** Precise sunrise reminders based on GPS, Automatic adjustment for seasonal shifts, Offline scheduling for a week, Streak tracking for habit building, Optional evening reminder, Sun radial visualization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HIIToMeter high intensity interval training meter free?

HIIToMeter high intensity interval training meter is free to download, with no in-app purchases.

### Is SunUp Reminder free?

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

### Which has better reviews, HIIToMeter high intensity interval training meter or SunUp Reminder?

HIIToMeter high intensity interval training meter and SunUp Reminder are both rated 5.0 out of 5 on the App Store, from 1 and 7 ratings respectively.

### Do HIIToMeter high intensity interval training meter or SunUp Reminder have ads?

Neither HIIToMeter high intensity interval training meter nor SunUp Reminder shows ads.

### Which is updated more often, HIIToMeter high intensity interval training meter or SunUp Reminder?

HIIToMeter high intensity interval training meter ships an update every 5 days, and SunUp Reminder daily. Most recently, HIIToMeter high intensity interval training meter was updated on October 1, 2026 and SunUp Reminder on October 9, 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.*