# Programmer Calculator vs 得润

The clearest difference is review sentiment: Programmer Calculator at 42% against 得润's 0%. Programmer Calculator also leads on iOS requirement (14.0 vs 16.0). 得润's advantage is in-app purchases (none vs 3) and update cadence (every 2 days vs fortnightly). On price, ads and device support there is nothing between them.

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

Programmer Calculator ships an update fortnightly, 得润 every 2 days. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Programmer Calculator | 得润 |
| --- | --- | --- |
| 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** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 6 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [永超 侯](https://appshunter.io/developer/906391544) | [Suzhou Youdu Network Technology Co., Ltd](https://appshunter.io/developer/6777382054) |

## 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 |


### 得润

[App page](https://appshunter.io/ios/app/id6777401954)

A professional charting tool for Qimen Dunjia enthusiasts. It generates charts instantly based on input time, displaying the nine palaces, eight gates, eight gods, nine stars, and celestial/terrestrial plates. It automatically corrects for true solar time based on longitude for greater accuracy.

**Highlights:** Instant Qimen Dunjia chart generation, Displays nine palaces, eight gates, eight gods, nine stars, True solar time correction by longitude, Accurate 24 solar term lookup, Historical records and notes with cloud sync

**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 得润 free?

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

### Do Programmer Calculator or 得润 have ads?

Neither Programmer Calculator nor 得润 shows ads.

### Which is updated more often, Programmer Calculator or 得润?

Programmer Calculator ships an update fortnightly, and 得润 every 2 days. Most recently, Programmer Calculator was updated on October 11, 2026 and 得润 on October 7, 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.*