# Polariss vs Hitotsubu

The clearest difference is price: Polariss at Free against Hitotsubu's $1.99. Polariss also leads on update cadence (weekly vs every 3 months). Hitotsubu's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Polariss is free to download; Hitotsubu costs $1.99 up front. Polariss sells 1 one-off in-app purchase. Hitotsubu asks for nothing beyond the download.

Polariss ships an update weekly, Hitotsubu every 3 months. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Polariss | Hitotsubu |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 months |
| Size | 6 MB | 15 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Yutaka Kubota](https://appshunter.io/developer/490646317) | [Makoto Fukuoka](https://appshunter.io/developer/1817908735) |

## What reviewers say

### Polariss

[App page](https://appshunter.io/ios/app/polariss/id6757706910)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Polariss Pro | $4.99 | one-time |


### Hitotsubu

[App page](https://appshunter.io/ios/app/hitotsubu/id6794575766)

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

**In-app purchases:** none


## Frequently asked questions

### Is Polariss free?

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

### Is Hitotsubu free?

Hitotsubu costs $1.99, with no in-app purchases.

### Do Polariss or Hitotsubu have ads?

Neither Polariss nor Hitotsubu shows ads.

### Which is updated more often, Polariss or Hitotsubu?

Polariss ships an update weekly, and Hitotsubu every 3 months. Most recently, Polariss was updated on October 31, 2026 and Hitotsubu 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.*