# MLAstro Hub — OnStepX Smart Controller

> OnStepX Smart Controller (iPhone/iPad app by To Ngoc Khanh.)

- Source: https://appshunter.io/ios/app/mlastro-hub/id6767999378 (this page in markdown: same URL + `.md`)
- Developer: [To Ngoc Khanh](https://appshunter.io/developer/1732662702)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 85 MB
- Languages: English
- Released: 2026-05-28
- Data updated: 2026-07-20
- User reviews in markdown: https://appshunter.io/ios/app/mlastro-hub/id6767999378/reviews.md

## What is MLAstro Hub?

MLAstro is the wireless remote control companion for OnStep-based telescope mounts connected through SmartWebServer.

Whether you're in your backyard or at a dark-sky site, MLAstro gives you everything you need right from your phone — no laptop, no cables, no hassle.

KEY FEATURES

● Live Mount Status
  See your mount's current state at a glance: tracking mode, guide rates, slew status, and connection health — all updated in real time.

● Full Directional Control
  A responsive on-screen directional pad lets you nudge the mount in any direction. Adjust slew rates, start or stop tracking, and send mount utility commands with a tap.

● Home & Park
  Safely home or park your mount at the end of a session with dedicated one-tap controls.

● Go-To Catalogs
  Browse built-in catalogs and send your mount directly to any object:
  - Messier catalog (110 objects)
  - Caldwell catalog (109 objects)
  - Bright Stars list
  - J2000 coordinate entry for any custom target

● Target Detail & Slew
  View object details before slewing, confirm the target, and watch your mount move — all from one clean screen.

● Alignment Workflow
  Step through the alignment process guided by the app, so your mount points accurately every time.

● Flexible Network Setup
  Supports both Access Point and Station (router) Wi-Fi modes. Save your controller's IP address and port so you're always one tap from connecting.

● Configuration & Tuning
  Adjust meridian flip settings, slew limits, slew rates, tracking mode, time & location, and controller / axis parameters — all without leaving the app.

● Light & Dark Theme
  Choose light, dark, or follow your system preference.

REQUIREMENTS
- An OnStep-based telescope mount controller
- SmartWebServer (or compatible TCP bridge) running on port 9998 (configurable)
- iOS 15 or later
- Same local Wi-Fi network as the mount

MLAstro is built for amateur astronomers who want a clean, capable mobile controller for their OnStep rig. No account required. No cloud. Just your phone and your mount.


## Version history (last 5 releases)

### 1.0.8 — 2026-07-04

Bug fixes and stability improvements

### 1.0.7 — 2026-06-23

Bug fixes and stability improvements

### 1.0.2 — 2026-06-04

Bug fixes and stability improvements

### 1.0.1 — 2026-05-30

Bug fixes and stability improvements.

### 1.0.0 — 2026-05-28

No release notes.

## More apps by To Ngoc Khanh

- [Đánh Đền](https://appshunter.io/ios/app/anh-en/id6777616801)

All apps by To Ngoc Khanh: https://appshunter.io/developer/1732662702

## Related topics

[mlastro hub](https://appshunter.io/ios/topics/mlastro-hub)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-20.*