# POLARIE U vs ShinkansenView

The clearest difference is in-app purchases: POLARIE U at none against ShinkansenView's 1. POLARIE U also leads on ads (none vs shown) and iOS requirement (11.0 vs 17.0). ShinkansenView's advantage is update cadence (fortnightly vs every 2 months). On price, review sentiment and device support there is nothing between them.

Both are free to download. ShinkansenView sells 1 one-off in-app purchase. POLARIE U asks for nothing beyond the download.

POLARIE U ships an update every 2 months, ShinkansenView fortnightly. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | POLARIE U | ShinkansenView |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/polarie-u/id1489683436/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 25 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vixen Co.,Ltd.](https://appshunter.io/developer/536188843) | [YUUSUKE HARASAWA](https://appshunter.io/developer/664328221) |

## What reviewers say

### POLARIE U

[App page](https://appshunter.io/ios/app/polarie-u/id1489683436)

This app enhances night sky photography by controlling a star tracker. It offers various rotation speeds, camera shutter control, and advanced imaging modes for creating stunning time-lapses and HDR images of celestial objects.

**Highlights:** Variable rotation speeds, Custom rotation speed settings, Camera shutter control, Shoot-move-shoot function, Accurate star tracking, Bracketed imaging for HDR, Night vision light

**Features:** macOS Compatibility

**In-app purchases:** none


### ShinkansenView

[App page](https://appshunter.io/ios/app/shinkansenview/id6743909260)

Visualize Shinkansen train positions on a map in near real-time. Access detailed train information, view timetables, and filter by route. Supports multiple languages and allows for custom time simulations.

**Highlights:** Near real-time map display, Detailed train information, Real-time timetables, Multilingual support, Route filtering, Customizable time simulation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is POLARIE U free?

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

### Is ShinkansenView free?

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

### Do POLARIE U or ShinkansenView have ads?

ShinkansenView shows ads; POLARIE U does not.

### Which is updated more often, POLARIE U or ShinkansenView?

POLARIE U ships an update every 2 months, and ShinkansenView fortnightly. Most recently, POLARIE U was updated on November 3, 2026 and ShinkansenView on November 6, 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.*