# 發票對獎 vs BinaryClockWatch

The clearest difference is ads: BinaryClockWatch at none against 發票對獎's shown. BinaryClockWatch also leads on update cadence (daily vs every 6 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

發票對獎 ships an update every 6 months, BinaryClockWatch daily. The most recent releases landed on October 9, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | 發票對獎 | BinaryClockWatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (63 ratings)](https://appshunter.io/ios/app/id967299053/reviews)** | — |
| Number of ratings | **63** | — |
| Positive reviews | 94.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Daily** |
| Size | 14 MB | 2 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [fengyi tsai](https://appshunter.io/developer/967299052) | [Christian Koys](https://appshunter.io/developer/1498135043) |

## What reviewers say

### 發票對獎

[App page](https://appshunter.io/ios/app/id967299053)

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

**In-app purchases:** none


### BinaryClockWatch

[App page](https://appshunter.io/ios/app/binaryclockwatch/id6808273520)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is 發票對獎 free?

發票對獎 is free to download, with no in-app purchases.

### Is BinaryClockWatch free?

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

### Do 發票對獎 or BinaryClockWatch have ads?

發票對獎 shows ads; BinaryClockWatch does not.

### Which is updated more often, 發票對獎 or BinaryClockWatch?

發票對獎 ships an update every 6 months, and BinaryClockWatch daily. Most recently, 發票對獎 was updated on October 9, 2026 and BinaryClockWatch on September 28, 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.*