# Programmer Calculator vs 如墨画框

The clearest difference is in-app purchases: 如墨画框 at none against Programmer Calculator's 3. 如墨画框 also leads on iOS requirement (12.0 vs 14.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Programmer Calculator sells 3 one-off in-app purchases. 如墨画框 asks for nothing beyond the download.

Programmer Calculator ships an update fortnightly, 如墨画框 every 2 weeks. The most recent releases landed on October 11, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Programmer Calculator | 如墨画框 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (32 ratings)](https://appshunter.io/ios/app/programmer-calculator-dev/id1624892520/reviews)** | — |
| Number of ratings | **32** | — |
| Positive reviews | 42.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 23 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [永超 侯](https://appshunter.io/developer/906391544) | [志军 陈](https://appshunter.io/developer/1660490809) |

## What reviewers say

### Programmer Calculator

[App page](https://appshunter.io/ios/app/programmer-calculator-dev/id1624892520)

This tool assists developers with number base conversions and CRC calculations for strings and hex bytes. Additional features are planned for future updates.

**Highlights:** Number base conversion, CRC calculation, String to hex conversion, Hex byte CRC calculation, Developer support tool

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A coke | $0.99 | one-time |
| A cup of coffee | $2.99 | one-time |
| A big meal | $5.99 | one-time |


### 如墨画框

[App page](https://appshunter.io/ios/app/id6484175258)

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

**In-app purchases:** none


## Frequently asked questions

### Is Programmer Calculator free?

Programmer Calculator is free to download, with in-app purchases available.

### Is 如墨画框 free?

如墨画框 is free to download, with no in-app purchases.

### Do Programmer Calculator or 如墨画框 have ads?

Neither Programmer Calculator nor 如墨画框 shows ads.

### Which is updated more often, Programmer Calculator or 如墨画框?

Programmer Calculator ships an update fortnightly, and 如墨画框 every 2 weeks. Most recently, Programmer Calculator was updated on October 11, 2026 and 如墨画框 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.*