Comparison

Local Sidereal Time vs Tagtory

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read 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.

About

Tagtory

Read full description

Tagtory is the easiest way to organize your physical belongings using NFC tags. SCAN & ORGANIZE Simply tap your iPhone on an NFC tag to instantly see what's inside that box, drawer, or container. No more guessing or opening every bin to find what you need. REGISTER CUSTOM TAGS Write NFC tags with your own data. Label storage containers, tool boxes, moving boxes, and more. Each tag links to a detailed item record with photos, notes, and location. SMART ORGANIZATION • Group items into categories with custom icons and colors • Add photos to remember what things look like • Track scan locations on a map with GPS • Drag and drop to reorder items and groups • Search across all your items instantly ICLOUD BACKUP & RESTORE Back up your entire organization system to iCloud and restore it anytime. Choose from three restore modes — keep local data, use iCloud data, or do a full restore. Your data is always safe in your private iCloud account. SHARE WITH OTHERS Share items with family members or roommates using peer-to-peer sharing — including photos. Perfect for shared storage spaces. No internet required. BUILT FOR YOU • Guided onboarding to get started in seconds • Light and dark mode support • NFC sticker buying guide with product recommendations • Works completely offline — no account or internet needed PERFECT FOR • Home organization and decluttering • Moving and packing • Garage and workshop storage • Craft and hobby supplies • Seasonal decoration storage • Office supply management FREE TO START Get started with up to 10 NFC tags, 3 groups, and 1 photo per item — free forever. Upgrade to Tagtory Pro for unlimited tags, groups, photos, and iCloud backup. PRIVACY FIRST All your data stays on your device and in your private iCloud account. We don't operate servers, run analytics, or track you. Your information is yours alone. Download Tagtory today and finally know exactly where everything is! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://tagtory.app/privacy

Screenshots

Local Sidereal Time4 screens
Tagtory4 screens

Verdict

The call

The clearest difference is update cadence: Tagtory at every 2 days against Local Sidereal Time's every 4 months. Local Sidereal Time's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Local Sidereal Time sells 1 one-off in-app purchase and Tagtory sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Local Sidereal Time ships an update every 4 months, Tagtory every 2 days. The most recent releases landed on September 26, 2026 and September 19, 2026 respectively.

Scorecard3 real differences · 7 level
Local Sidereal Time versus Tagtory: the parameters behind the verdict, then further details
ParameterLocal Sidereal TimeTagtory
PriceFreeFree
Rating4.7 (1.1K ratings) — better—
Positive reviews70.7% of reviews—
Number of ratings1.1K — better—
Update frequencyEvery 4 monthsEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better18.0
Further details — not scored
Size20 MB12 MB
Age rating4+4+
DeveloperScott SpillerZEYI YAN

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

Tagtory

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Local Sidereal Time

One-time1
  • Pro$4.99
3 purchases

Tagtory

Subscriptions2
  • Tagtory Pro Monthly1 Month trial$2.991 Month
  • Tagtory Pro Yearly$24.991 Year
One-time1
  • Tagtory Pro Lifetime$39.99

Questions

Is Local Sidereal Time free?
Local Sidereal Time is free to download, with in-app purchases available.
Is Tagtory free?
Tagtory is free to download, with in-app purchases available.
Do Local Sidereal Time or Tagtory have ads?
Neither Local Sidereal Time nor Tagtory shows ads.
Which is updated more often, Local Sidereal Time or Tagtory?
Local Sidereal Time ships an update every 4 months, and Tagtory every 2 days. Most recently, Local Sidereal Time was updated on September 26, 2026 and Tagtory on September 19, 2026.

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