# 交通費精算S vs Second Brain

The clearest difference is in-app purchases: Second Brain at none against 交通費精算S's 1. 交通費精算S's advantage is iOS requirement (13.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 交通費精算S sells 1 in-app purchase, starting at $1.99 per year. Second Brain asks for nothing beyond the download.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 交通費精算S | Second Brain |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 37 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hideji Kitamura](https://appshunter.io/developer/343132459) | [Dcode](https://appshunter.io/developer/1868391710) |

## What reviewers say

### 交通費精算S

[App page](https://appshunter.io/ios/app/s/id1457634395)

Simplify your travel expense reports by easily logging transportation costs as you incur them. This app streamlines the process with quick data entry, integration with navigation services, and CSV export for efficient reimbursement.

**Highlights:** Quickly log travel expenses, Integrate with navigation services, Export data as CSV, Use location services for nearest station, Pre-register common routes and transport modes, View station locations on a map

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 機能拡張 | $1.99 | per year |


### Second Brain

[App page](https://appshunter.io/ios/app/second-brain-ai-note/id6799343264)

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

**In-app purchases:** none


## Frequently asked questions

### Is 交通費精算S free?

交通費精算S is free to download, with in-app purchases available.

### Is Second Brain free?

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

### Do 交通費精算S or Second Brain have ads?

Neither 交通費精算S nor Second Brain shows ads.

### Which is updated more often, 交通費精算S or Second Brain?

交通費精算S ships an update monthly, and Second Brain monthly. Most recently, 交通費精算S was updated on November 2, 2026 and Second Brain on October 31, 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.*