# 税金の壁ナビ vs ZeiCal

The clearest difference is in-app purchases: ZeiCal at none against 税金の壁ナビ's 2. ZeiCal also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.0). 税金の壁ナビ's advantage is update cadence (every 2 days vs weekly). On price and device support there is nothing between them.

Both are free to download. 税金の壁ナビ sells 2 one-off in-app purchases. ZeiCal asks for nothing beyond the download.

税金の壁ナビ ships an update every 2 days, ZeiCal weekly. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 税金の壁ナビ | ZeiCal |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 39 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KUREHO](https://appshunter.io/developer/1884942706) | [JUNGLAE JO](https://appshunter.io/developer/6780321351) |

## What reviewers say

### 税金の壁ナビ

[App page](https://appshunter.io/ios/app/106/id6764667565)

Automatically prevents exceeding income thresholds by tracking monthly earnings. Optimized for students, part-time workers, and pensioners, it provides real-time alerts and detailed explanations of tax and social security implications. Your financial data stays on your device.

**Highlights:** Automatic income threshold tracking, Real-time alerts for exceeding limits, Optimized for students, part-time workers, and pensioners, On-device data processing for privacy, Detailed explanations of tax implications, Simulator for tax and social security calculations

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Plus | $9.99 | one-time |


### ZeiCal

[App page](https://appshunter.io/ios/app/zeical/id6780321349)

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

**In-app purchases:** none


## Frequently asked questions

### Is 税金の壁ナビ free?

税金の壁ナビ is free to download, with in-app purchases available.

### Is ZeiCal free?

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

### Do 税金の壁ナビ or ZeiCal have ads?

税金の壁ナビ shows ads; ZeiCal does not.

### Which is updated more often, 税金の壁ナビ or ZeiCal?

税金の壁ナビ ships an update every 2 days, and ZeiCal weekly. Most recently, 税金の壁ナビ was updated on October 9, 2026 and ZeiCal on October 7, 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.*