# Knowe Astro vs Luck日子

The clearest difference is update cadence: Luck日子 at every 3 days against Knowe Astro's every 8 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Knowe Astro sells 4 in-app purchases, starting at $4.99 per month and Luck日子 sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Knowe Astro ships an update every 8 days, Luck日子 every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Knowe Astro | Luck日子 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/knowe-astro-birth-chart/id6752608152/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 23 MB | 26 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [占辉 百](https://appshunter.io/developer/1081455103) | [兵 李](https://appshunter.io/developer/1888184886) |

## What reviewers say

### Knowe Astro

[App page](https://appshunter.io/ios/app/knowe-astro-birth-chart/id6752608152)

Explore your birth chart with detailed analysis of planets, signs, houses, and aspects. Understand relationships through synastry and composite charts, and track transits over time. AI insights are grounded in your specific astrological data.

**Highlights:** Precise birth chart calculation, Synastry and composite charts, Transit tracking, AI-generated readings, Astrology library, Home screen widgets

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro Membership | $4.99 | per month |
| Monthly Ultra Membership | $6.99 | per month |
| Yearly Pro Membership | $19.99 | per year |
| Yearly Ultra Membership | $29.99 | per year |


### Luck日子

[App page](https://appshunter.io/ios/app/luck/id6808837559)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 择日月卡 | $1.99 | per month |
| 择日年卡 | $14.99 | per year |
| 择日 10 次卡 | $0.99 | one-time |


## Frequently asked questions

### Is Knowe Astro free?

Knowe Astro is free to download, with in-app purchases available.

### Is Luck日子 free?

Luck日子 is free to download, with in-app purchases available.

### Do Knowe Astro or Luck日子 have ads?

Neither Knowe Astro nor Luck日子 shows ads.

### Which is updated more often, Knowe Astro or Luck日子?

Knowe Astro ships an update every 8 days, and Luck日子 every 3 days. Most recently, Knowe Astro was updated on October 30, 2026 and Luck日子 on October 31, 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.*