# TAC Book vs AmCham SG

The clearest difference is update cadence: AmCham SG at every 2 weeks against TAC Book's every 5 weeks. TAC Book's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TAC Book ships an update every 5 weeks, AmCham SG every 2 weeks. The most recent releases landed on June 4, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | TAC Book | AmCham SG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/tac-book/id1607290781/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 52 MB | 163 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Joga Incorporated Pte. Ltd.](https://appshunter.io/developer/1360252865) | [EventBank](https://appshunter.io/developer/740353440) |

## What reviewers say

### TAC Book

[App page](https://appshunter.io/ios/app/tac-book/id1607290781)

Manage your appointments and classes with this mobile booking app. Access schedules, book activities, and receive important notifications. Members can also register on the go and view their booking history.

**Highlights:** Manage appointments and classes, Access activity schedules, Book and cancel facilities, Receive class notifications, Register on the go, View booking history

**Features:** macOS Compatibility

**In-app purchases:** none


### AmCham SG

[App page](https://appshunter.io/ios/app/amcham-sg/id1611994545)

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

**In-app purchases:** none


## Frequently asked questions

### Is TAC Book free?

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

### Is AmCham SG free?

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

### Do TAC Book or AmCham SG have ads?

Neither TAC Book nor AmCham SG shows ads.

### Which is updated more often, TAC Book or AmCham SG?

TAC Book ships an update every 5 weeks, and AmCham SG every 2 weeks. Most recently, TAC Book was updated on June 4, 2026 and AmCham SG on September 20, 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.*