Local Sidereal Time vs ADC Urethane Systems
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Local Sidereal Time
This app calculates local sidereal time, a system astronomers use to locate celestial objects. It can also be used for personal development, with studies suggesting increased psychic abilities during specific sidereal times. The pro version offers advanced features like notifications and map-based calculations.
- Calculate local sidereal time
- Astronomy celestial object location
- Potential psychic ability enhancement
- Pro version notifications
- Pro version map-based calculation
- Pro version date/time conversion
Read full descriptionHide full description
Sidereal helps you track local sidereal time from your current location or any place you want to check. It is designed for people interested in the 13:30 LST window discussed in remote-viewing literature, while also supporting any custom sidereal target you want to follow. Use Sidereal to: View a live local sidereal clock based on your current location Calculate local sidereal time manually from longitude, date, and time Search for a city or address and see the result with map support Generate the next 31 upcoming hits for your selected sidereal target Schedule the next 30 days of on-device alerts Export future times to CSV and export events to your calendar Customize your target LST, alert timing, full-window notifications, night viewing, and map visibility Sidereal starts with 13:30 LST as the default target, but you can change it in Settings to track any local sidereal time. The app includes a trial, with Pro unlocking continued access to advanced tools and planning features.
ADC Urethane Systems
This free utility app provides users with essential tools for urethane products. It includes casting calculators, formulation search, and access to technical data sheets and safety data sheets.
- Casting calculators
- Formulation search
- Technical data sheets
- US SDS access
- Urethane product information
Read full descriptionHide full description
Anderson Development’s free app that gives you all of our casting calculators, as well as quick access to formulation search tools, technical data sheets, and US SDS for ADC urethane products.
Screenshots
Verdict
The clearest difference is in-app purchases: ADC Urethane Systems at none against Local Sidereal Time's 1. ADC Urethane Systems also leads on rating (5.0 vs 4.7) and iOS requirement (11.0 vs 15.0). Local Sidereal Time's advantage is ratings volume (1.1K vs 7). On price, update cadence, ads and device support 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. Local Sidereal Time sells 1 one-off in-app purchase. ADC Urethane Systems asks for nothing beyond the download.
ADC Urethane Systems holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Local Sidereal Time has 1.1K ratings behind it against 7, so its average is the more settled of the two.
Local Sidereal Time ships an update every 4 months, ADC Urethane Systems every 3 months. The most recent releases landed on September 26, 2026 and June 1, 2026 respectively.
| Parameter | Local Sidereal Time | ADC Urethane Systems |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (1.1K ratings) | 5.0 (7 ratings) — better |
| Positive reviews | 70.7% of reviews | — |
| Number of ratings | 1.1K — better | 7 |
| Update frequency | Every 4 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Scott Spiller | CODIFI LLC |
Customer experience
Local Sidereal Time
ADC Urethane Systems
Bugs and requests
Local Sidereal Time
Reported bugs
4 issues- Alarm doesn't work
- Crashes when loading
- Notification issues
- Pro purchase restoration not working
Requested features
4 requests- Add alarm feature
- Allow setting location manually
- Improve notification handling
- Automatically adjust for daylight saving time
ADC Urethane Systems
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Local Sidereal Time
- Pro$4.99
ADC Urethane Systems
No in-app purchases
Questions
Is Local Sidereal Time free?
Is ADC Urethane Systems free?
Which has better reviews, Local Sidereal Time or ADC Urethane Systems?
Do Local Sidereal Time or ADC Urethane Systems have ads?
Which is updated more often, Local Sidereal Time or ADC Urethane Systems?
Other comparisons
