# Epic Ruler vs 萬用計算機

The clearest difference is in-app purchases: Epic Ruler at none against 萬用計算機's 2. 萬用計算機's advantage is ads (none vs shown) and update cadence (every 2 months vs every 17 months). On price there is nothing between them.

Both are free to download. 萬用計算機 sells 2 one-off in-app purchases. Epic Ruler asks for nothing beyond the download.

Epic Ruler ships an update every 17 months, 萬用計算機 every 2 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Epic Ruler | 萬用計算機 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (4 ratings)](https://appshunter.io/ios/app/epic-ruler/id982728131/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 17 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 11 MB | 157 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chih-Hao Chen](https://appshunter.io/developer/618207820) | [Wang ShihWen](https://appshunter.io/developer/1697458052) |

## What reviewers say

### Epic Ruler

[App page](https://appshunter.io/ios/app/epic-ruler/id982728131)

Transform your smartphone into a portable measuring tool. Accurately measure lengths in both inches and centimeters directly from your device.

**Highlights:** Converts phone to ruler, Measures in inches, Measures in centimeters, Pocket-sized utility

**Features:** macOS Compatibility

**In-app purchases:** none


### 萬用計算機

[App page](https://appshunter.io/ios/app/id6503681321)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 會員1個月 | $1.99 | one-time |
| 會員1年 | $14.99 | one-time |


## Frequently asked questions

### Is Epic Ruler free?

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

### Is 萬用計算機 free?

萬用計算機 is free to download, with in-app purchases available.

### Do Epic Ruler or 萬用計算機 have ads?

Epic Ruler shows ads; 萬用計算機 does not.

### Which is updated more often, Epic Ruler or 萬用計算機?

Epic Ruler ships an update every 17 months, and 萬用計算機 every 2 months. Most recently, Epic Ruler was updated on November 1, 2026 and 萬用計算機 on November 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*