# Source vs Vitamin Today

The clearest difference is in-app purchases: Vitamin Today at none against Source's 3. Source's advantage is iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Source sells 3 in-app purchases, starting at $7.99 per month. Vitamin Today asks for nothing beyond the download.

Source ships an update fortnightly, Vitamin Today every 2 weeks. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Source | Vitamin Today |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 62 MB | 7 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CHANG-WEI FU](https://appshunter.io/developer/1837600448) | [Yung Wen Cheng](https://appshunter.io/developer/1851202446) |

## What reviewers say

### Source

[App page](https://appshunter.io/ios/app/source-ai-copilot/id6756547151)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Source Pro (月費) | $7.99 | per month |
| Source Pro (年費) | $49.99 | per year |
| Source Pro 創始會員 | $99.99 | one-time |


### Vitamin Today

[App page](https://appshunter.io/ios/app/vitamin-today/id6761441866)

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

**In-app purchases:** none


## Frequently asked questions

### Is Source free?

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

### Is Vitamin Today free?

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

### Do Source or Vitamin Today have ads?

Neither Source nor Vitamin Today shows ads.

### Which is updated more often, Source or Vitamin Today?

Source ships an update fortnightly, and Vitamin Today every 2 weeks. Most recently, Source was updated on October 16, 2026 and Vitamin Today on October 8, 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.*