# SunTrack vs HourChime

The clearest difference is rating: HourChime at 4.7 against SunTrack's 4.0. HourChime also leads on review sentiment (62% vs 50%). SunTrack's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 17.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. HourChime sells 1 one-off in-app purchase. SunTrack asks for nothing beyond the download.

HourChime holds the better App Store score, 4.7 against 4.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews point the same way: 50% of SunTrack's written reviews are positive against 62% of HourChime's.

SunTrack ships an update every 5 weeks, HourChime every 2 months. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | SunTrack | HourChime |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/suntrack/id336494804/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/hourchime/id6753335220/reviews)** |
| Number of ratings | 2 | **3** |
| Positive reviews | 50.0% of reviews | **61.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 13 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ColuzziWeb](https://appshunter.io/developer/331533564) | [Mitsuhiro Hashimoto](https://appshunter.io/developer/509482512) |

## What reviewers say

### SunTrack

[App page](https://appshunter.io/ios/app/suntrack/id336494804)

This app calculates sun tracking parameters for equatorial and altazimuth mounts using device sensors. It displays elevation, tilt, and azimuth, and can automatically update location data.

**Highlights:** Equatorial mount parameters (tilt, elevation), Altazimuth mount parameters (azimuth, elevation), Accelerometer for device surface tilt, User-entered latitude, Automatic location updates (GPS, Wi-Fi), Error difference display

**Features:** macOS Compatibility

**In-app purchases:** none


### HourChime

[App page](https://appshunter.io/ios/app/hourchime/id6753335220)

This app provides hourly or 30-minute voice cues and sounds to help you stay focused and on track. It features customizable quiet hours and a clean, battery-friendly interface. The app is designed for reliable background operation.

**Highlights:** Hourly/30-minute chime intervals, Spoken time announcements, Customizable mute schedule, Background operation, Battery-friendly design, Light/Dark Mode support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | one-time |


## Frequently asked questions

### Is SunTrack free?

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

### Is HourChime free?

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

### Which has better reviews, SunTrack or HourChime?

HourChime is rated higher. SunTrack averages 4.0 out of 5 from 2 ratings, while HourChime averages 4.7 from 3 ratings.

### Do SunTrack or HourChime have ads?

Neither SunTrack nor HourChime shows ads.

### Which is updated more often, SunTrack or HourChime?

SunTrack ships an update every 5 weeks, and HourChime every 2 months. Most recently, SunTrack was updated on September 30, 2026 and HourChime on October 1, 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.*