# 51黄历 vs Interest Rate Calculation

The clearest difference is rating: 51黄历 at 5.0 against Interest Rate Calculation's 4.7. 51黄历 also leads on iOS requirement (10.0 vs 16.6). Interest Rate Calculation's advantage is update cadence (every 6 days vs fortnightly) and ratings volume (6 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

51黄历 holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Interest Rate Calculation has 6 ratings behind it against 1, so its average is the more settled of the two.

51黄历 ships an update fortnightly, Interest Rate Calculation every 6 days. The most recent releases landed on October 5, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 51黄历 | Interest Rate Calculation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/51-3app/id1457144103/reviews)** | [4.7 (6 ratings)](https://appshunter.io/ios/app/interest-rate-calculation/id1613135579/reviews) |
| Number of ratings | 1 | **6** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 6 days** |
| Monetization | Ad-supported | Ad-supported |
| Size | 208 MB | 10 MB |
| Requires iOS | **10.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [小婷 钟](https://appshunter.io/developer/1487006779) | [CHING FENG HSU](https://appshunter.io/developer/1613135581) |

## What reviewers say

### 51黄历

[App page](https://appshunter.io/ios/app/51-3app/id1457144103)

This professional calendar app offers a comprehensive suite of tools for users seeking traditional Chinese almanac information. It includes features for selecting auspicious dates, checking daily fortunes, converting between Gregorian and Lunar calendars, and exploring historical events.

**Highlights:** Auspicious date selection, Lunar and Gregorian calendar conversion, Daily fortune and auspicious direction finder, Historical events timeline, Zodiac and horoscope readings, Feng Shui and divination tools

**Features:** macOS Compatibility

**In-app purchases:** none


### Interest Rate Calculation

[App page](https://appshunter.io/ios/app/interest-rate-calculation/id1613135579)

Easily calculate various interest rates, including single, compound, and loan scenarios. Visualize your calculations with chart views. Supports home and car loan simulations, as well as interest income projections.

**Highlights:** Single interest rate calculation, Compound interest rate calculation, Annuity calculation, Regular fixed amount calculation, Home loan interest rate trial, Car loan interest rate trial, Interest income calculation

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

**In-app purchases:** none


## Frequently asked questions

### Is 51黄历 free?

51黄历 is free to download, with no in-app purchases.

### Is Interest Rate Calculation free?

Interest Rate Calculation is free to download, with no in-app purchases.

### Which has better reviews, 51黄历 or Interest Rate Calculation?

51黄历 is rated higher. 51黄历 averages 5.0 out of 5 from 1 ratings, while Interest Rate Calculation averages 4.7 from 6 ratings.

### Do 51黄历 or Interest Rate Calculation have ads?

Both 51黄历 and Interest Rate Calculation show ads.

### Which is updated more often, 51黄历 or Interest Rate Calculation?

51黄历 ships an update fortnightly, and Interest Rate Calculation every 6 days. Most recently, 51黄历 was updated on October 5, 2026 and Interest Rate Calculation on October 27, 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.*