# Siddha vs Rhythm

The clearest difference is in-app purchases: Siddha at none against Rhythm's 2. Siddha also leads on update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Rhythm sells 2 in-app purchases, starting at $9.99 per year. Siddha asks for nothing beyond the download.

Siddha ships an update weekly, Rhythm every 3 weeks. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Siddha | Rhythm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 21 MB | 9 MB |
| Requires iOS | 18.2 | **17.1** |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Srinath Vangala](https://appshunter.io/developer/1806796010) | [阳 孙](https://appshunter.io/developer/1518808403) |

## What reviewers say

### Siddha

[App page](https://appshunter.io/ios/app/siddha/id6745690040)

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

**In-app purchases:** none


### Rhythm

[App page](https://appshunter.io/ios/app/rhythm-semen-retention/id6759880730)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| T_Score_Pro_Yearly | $9.99 | per year |
| T-Score-Pro | $29.99 | one-time |


## Frequently asked questions

### Is Siddha free?

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

### Is Rhythm free?

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

### Do Siddha or Rhythm have ads?

Neither Siddha nor Rhythm shows ads.

### Which is updated more often, Siddha or Rhythm?

Siddha ships an update weekly, and Rhythm every 3 weeks. Most recently, Siddha was updated on November 5, 2026 and Rhythm on November 9, 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.*