# StellarMate vs Duration Tracker

The clearest difference is device support: StellarMate at 3 against Duration Tracker's 1. StellarMate also leads on iOS requirement (15.1 vs 26.0). On price, update cadence, 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.

StellarMate ships an update every 8 days, Duration Tracker weekly. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | StellarMate | Duration Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (20 ratings)](https://appshunter.io/ios/app/stellarmate/id1252626058/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 34.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 days | **Weekly** |
| Monetization | Free | — |
| Size | 119 MB | 9 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ikarus Astronomy Company For Scientific Instruments & Tools](https://appshunter.io/developer/1252626057) | [Myung Geun Choi](https://appshunter.io/developer/1384350201) |

## What reviewers say

### StellarMate

[App page](https://appshunter.io/ios/app/stellarmate/id1252626058)

Control your astrophotography equipment remotely. Capture images, stream video, and perform precise alignment. Automatically back up your photos to the cloud with rich metadata for easy searching.

**Highlights:** Remote equipment control, Image capture and video streaming, Polar alignment assistant, Cloud image backup, Metadata search and sorting, Software updates

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

**In-app purchases:** none


### Duration Tracker

[App page](https://appshunter.io/ios/app/duration-tracker/id6759609367)

**In-app purchases:** none


## Frequently asked questions

### Is StellarMate free?

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

### Is Duration Tracker free?

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

### Do StellarMate or Duration Tracker have ads?

Neither StellarMate nor Duration Tracker shows ads.

### Which is updated more often, StellarMate or Duration Tracker?

StellarMate ships an update every 8 days, and Duration Tracker weekly. Most recently, StellarMate was updated on September 21, 2026 and Duration Tracker on September 14, 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.*