# 이택스북 (etaxbook) v3.0 vs BookSynapse

The clearest difference is update cadence: BookSynapse at every 2 days against 이택스북 (etaxbook) v3.0's every 7 months. 이택스북 (etaxbook) v3.0's advantage is iOS requirement (11.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

이택스북 (etaxbook) v3.0 ships an update every 7 months, BookSynapse every 2 days. The most recent releases landed on October 14, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 이택스북 (etaxbook) v3.0 | BookSynapse |
| --- | --- | --- |
| Price | — | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/etaxbook-v30/id6747701030/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 3 MB | 6 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BYOUNGSOOK KO](https://appshunter.io/developer/975991670) | [Jihye Shin](https://appshunter.io/developer/1895853325) |

## What reviewers say

### 이택스북 (etaxbook) v3.0

[App page](https://appshunter.io/ios/app/etaxbook-v30/id6747701030)

This app provides tax and accounting professionals with access to a library of e-books. It features advanced search, bookmarking, and the ability to view author commentary videos. The latest version ensures access to new 2025 tax content.

**Highlights:**  목차 보기,  검색 기능,  예규판례 링크,  북마크 및 메모,  동영상 보기,  텍스트 복사,  인쇄 기능

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

**In-app purchases:** none


### BookSynapse

[App page](https://appshunter.io/ios/app/booksynapse/id6764621912)

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

**In-app purchases:** none


## Frequently asked questions

### Is 이택스북 (etaxbook) v3.0 free?

Pricing for 이택스북 (etaxbook) v3.0 is not currently listed on the App Store.

### Is BookSynapse free?

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

### Do 이택스북 (etaxbook) v3.0 or BookSynapse have ads?

Neither 이택스북 (etaxbook) v3.0 nor BookSynapse shows ads.

### Which is updated more often, 이택스북 (etaxbook) v3.0 or BookSynapse?

이택스북 (etaxbook) v3.0 ships an update every 7 months, and BookSynapse every 2 days. Most recently, 이택스북 (etaxbook) v3.0 was updated on October 14, 2026 and BookSynapse on October 18, 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.*