# Knowe Astro：Birth Chart vs 星籁

The clearest difference is update cadence: Knowe Astro：Birth Chart at every 4 days against 星籁's every 2 weeks. 星籁's advantage is iOS requirement (12.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Knowe Astro：Birth Chart sells 4 in-app purchases, starting at $4.99 per month and 星籁 sells 9 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Knowe Astro：Birth Chart ships an update every 4 days, 星籁 every 2 weeks. The most recent releases landed on October 15, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Knowe Astro：Birth Chart | 星籁 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/knowe-astrobirth-chart/id6752608152/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | Freemium | — |
| Size | 22 MB | 82 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [占辉 百](https://appshunter.io/developer/1081455103) | [Shandong BrioBox Network Technology Co., Ltd.](https://appshunter.io/developer/1856891895) |

## What reviewers say

### Knowe Astro：Birth Chart

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

This app generates detailed natal charts, synastry comparisons, and transit readings. It offers AI-powered interpretations and includes a built-in astrology library for in-depth study. Ideal for both beginners and experienced astrologers seeking a clear workspace.

**Highlights:** Accurate natal and birth charts, Synastry and compatibility analysis, Transit tracking and timing, AI chart interpretation, In-app astrology library, Detailed placement study

**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 |


### 星籁

[App page](https://appshunter.io/ios/app/id6755881478)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月 | $2.99 | per month |
| 连续包季 | $6.99 | per 3 months |
| 连续包年 | $14.99 | per year |
| 星空钥匙x1 | $1.49 | one-time |
| 星空钥匙x2 | $2.49 | one-time |
| 月度会员 | $2.99 | one-time |
| 星空钥匙x5 | $4.99 | one-time |
| 季度会员 | $6.99 | one-time |
| 年度会员 | $14.99 | one-time |


## Frequently asked questions

### Is Knowe Astro：Birth Chart free?

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

### Is 星籁 free?

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

### Do Knowe Astro：Birth Chart or 星籁 have ads?

Neither Knowe Astro：Birth Chart nor 星籁 shows ads.

### Which is updated more often, Knowe Astro：Birth Chart or 星籁?

Knowe Astro：Birth Chart ships an update every 4 days, and 星籁 every 2 weeks. Most recently, Knowe Astro：Birth Chart was updated on October 15, 2026 and 星籁 on October 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.*