# sci.calculator vs Calendar LED

The clearest difference is in-app purchases: Calendar LED at none against sci.calculator's 1. Calendar LED also leads on update cadence (weekly vs every 5 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. sci.calculator sells 1 one-off in-app purchase. Calendar LED asks for nothing beyond the download.

sci.calculator ships an update every 5 weeks, Calendar LED weekly. The most recent releases landed on October 16, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | sci.calculator | Calendar LED |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 49 MB | 41 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yukihiro Shioya](https://appshunter.io/developer/1565306192) | [TOMIHIDE OTA](https://appshunter.io/developer/1796389332) |

## What reviewers say

### sci.calculator

[App page](https://appshunter.io/ios/app/scicalculator/id1620728508)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| remove Ads | $1.99 | one-time |


### Calendar LED

[App page](https://appshunter.io/ios/app/calendar-led/id6756488079)

This app displays your calendar events using a unique, station-style departure board aesthetic. It offers practical alerts for upcoming schedules and features themes inspired by Japanese railway stations.

**Highlights:** Station-style calendar event display, Practical schedule alerts, Japanese railway station themes, Customizable themes, Event notifications

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

**In-app purchases:** none


## Frequently asked questions

### Is sci.calculator free?

sci.calculator is free to download, with in-app purchases available.

### Is Calendar LED free?

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

### Do sci.calculator or Calendar LED have ads?

Neither sci.calculator nor Calendar LED shows ads.

### Which is updated more often, sci.calculator or Calendar LED?

sci.calculator ships an update every 5 weeks, and Calendar LED weekly. Most recently, sci.calculator was updated on October 16, 2026 and Calendar LED on October 25, 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.*