LSTclock vs ScopeWizard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LSTclock
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.
- Local sidereal time display
- Julian Date calculation
- Supports multiple registered locations
- Location sync between iPhone and Apple Watch
- Date and time specific calculations
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LSTclock is an iOS/iPadOS/watchOS app that displays the local sidereal time (LST) at registered location(s). On iOS/iPadOS, it can also calculate LST and Julian Date for any date and time. The list of locations can be synced between iPhone and paired Apple Watch(es).
ScopeWizard
This app simplifies telescope, eyepiece, and camera calculations with a unified database of equipment. Easily mix and match your gear or input custom values for precise specifications.
- Unified formula database
- Equipment database
- Mix and match gear
- Custom value input
- Telescope specifications calculation
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There are numerous formulas for computing the specifics of your telescope, eyepieces, and camera's characteristics when used together. ScopeWizard brings those formulas together in one handy place. An included database of telescopes, eyepieces, and cameras can be used to mix and match your equipment, or you can enter custom values manually.
Screenshots
Verdict
The clearest difference is rating: ScopeWizard at 5.0 against LSTclock's 3.8. LSTclock's advantage is update cadence (every 2 months vs every 25 months) and ratings volume (10 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ScopeWizard holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: LSTclock has 10 ratings behind it against 1, so its average is the more settled of the two.
LSTclock ships an update every 2 months, ScopeWizard every 25 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | LSTclock | ScopeWizard |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (10 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 54.5% of reviews | — |
| Number of ratings | 10 — better | 1 |
| Update frequency | Every 2 months — better | Every 25 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Mac |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Tsuyoshi Sawada | Richard Wright |
Customer experience
LSTclock
ScopeWizard
In-app purchases
LSTclock
No in-app purchases
ScopeWizard
No in-app purchases
Questions
Is LSTclock free?
Is ScopeWizard free?
Which has better reviews, LSTclock or ScopeWizard?
Do LSTclock or ScopeWizard have ads?
Which is updated more often, LSTclock or ScopeWizard?
Other comparisons
