# LSTclock vs Deferred

The clearest difference is update cadence: Deferred at every 3 days against LSTclock's every 2 months. Deferred also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

LSTclock ships an update every 2 months, Deferred every 3 days. The most recent releases landed on September 9, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | LSTclock | Deferred |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (10 ratings)](https://appshunter.io/ios/app/lstclock-sidereal-time-clock/id1510148631/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 54.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 15 MB | 12 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Tsuyoshi Sawada](https://appshunter.io/developer/1510148630) | [Technowand Pty Ltd](https://appshunter.io/developer/1443338731) |

## What reviewers say

### LSTclock

[App page](https://appshunter.io/ios/app/lstclock-sidereal-time-clock/id1510148631)

This utility app displays local sidereal time for registered locations on iOS, iPadOS, and watchOS. It can also calculate sidereal time and Julian Date for any date and time, and sync locations between devices.

**Highlights:** Local sidereal time display, Julian Date calculation, Supports multiple registered locations, Location sync between iPhone and Apple Watch, Date and time specific calculations

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Deferred

[App page](https://appshunter.io/ios/app/deferred/id6742811466)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LSTclock free?

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

### Is Deferred free?

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

### Do LSTclock or Deferred have ads?

Neither LSTclock nor Deferred shows ads.

### Which is updated more often, LSTclock or Deferred?

LSTclock ships an update every 2 months, and Deferred every 3 days. Most recently, LSTclock was updated on September 9, 2026 and Deferred on September 13, 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.*