# LSTclock vs Easy File Locker

The clearest difference is price: LSTclock at Free against Easy File Locker's $1.99. Easy File Locker's advantage is update cadence (monthly vs every 2 months) and iOS requirement (15.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

LSTclock is free to download; Easy File Locker costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

LSTclock ships an update every 2 months, Easy File Locker monthly. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | LSTclock | Easy File Locker |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| 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 | **Monthly** |
| Monetization | Free | — |
| Size | 15 MB | 22 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tsuyoshi Sawada](https://appshunter.io/developer/1510148630) | [茂华 何](https://appshunter.io/developer/1575113723) |

## 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


### Easy File Locker

[App page](https://appshunter.io/ios/app/easy-file-locker/id6742145387)

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

**In-app purchases:** none


## Frequently asked questions

### Is LSTclock free?

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

### Is Easy File Locker free?

Easy File Locker costs $1.99, with no in-app purchases.

### Do LSTclock or Easy File Locker have ads?

Neither LSTclock nor Easy File Locker shows ads.

### Which is updated more often, LSTclock or Easy File Locker?

LSTclock ships an update every 2 months, and Easy File Locker monthly. Most recently, LSTclock was updated on October 12, 2026 and Easy File Locker on October 5, 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.*