# Art of Stat vs Upstream

The clearest difference is in-app purchases: Art of Stat at none against Upstream's 10. Art of Stat also leads on iOS requirement (15.1 vs 17.0). Upstream's advantage is update cadence (every 11 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Upstream sells 10 one-off in-app purchases. Art of Stat asks for nothing beyond the download.

Art of Stat ships an update every 3 weeks, Upstream every 11 days. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Art of Stat | Upstream |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Size | 34 MB | 15 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bernhard Klingenberg](https://appshunter.io/developer/1564877195) | [Anh Ngoc Le](https://appshunter.io/developer/1878659639) |

## What reviewers say

### Art of Stat

[App page](https://appshunter.io/ios/app/art-of-stat-machine-learning/id6755331121)

**Features:** macOS Compatibility

**In-app purchases:** none


### Upstream

[App page](https://appshunter.io/ios/app/upstream-data-training/id6759870186)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sharper Thinking | $9.99 | one-time |
| Advanced Question Frameworks | $9.99 | one-time |
| Stakeholder Communication | $12.99 | one-time |
| Healthcare Analytics | $12.99 | one-time |
| SaaS Metrics Mastery | $12.99 | one-time |
| Financial Services Analytics | $12.99 | one-time |
| E-commerce Analytics | $12.99 | one-time |
| ML Reality Checks | $12.99 | one-time |
| Mastering Metric Traps | $14.99 | one-time |
| Analyst Interview Prep | $19.99 | one-time |


## Frequently asked questions

### Is Art of Stat free?

Art of Stat is free to download, with no in-app purchases.

### Is Upstream free?

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

### Do Art of Stat or Upstream have ads?

Neither Art of Stat nor Upstream shows ads.

### Which is updated more often, Art of Stat or Upstream?

Art of Stat ships an update every 3 weeks, and Upstream every 11 days. Most recently, Art of Stat was updated on September 23, 2026 and Upstream on September 17, 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.*