# CS Pro Note vs Axon

The clearest difference is update cadence: Axon at every 5 days against CS Pro Note's monthly. CS Pro Note's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. CS Pro Note sells 1 one-off in-app purchase and Axon sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

CS Pro Note ships an update monthly, Axon every 5 days. The most recent releases landed on September 17, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | CS Pro Note | Axon |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (13 ratings)](https://appshunter.io/ios/app/axon-learn-machine-learning/id6766640118/reviews)** |
| Number of ratings | — | **13** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | — | Freemium |
| Size | 60 MB | 87 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jeffery Galen Reed](https://appshunter.io/developer/1819964083) | [Fyxture](https://appshunter.io/developer/1896310603) |

## What reviewers say

### CS Pro Note

[App page](https://appshunter.io/ios/app/cs-pro-note/id6749539002)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CS Pro Note Lifetime | $7.99 | one-time |


### Axon

[App page](https://appshunter.io/ios/app/axon-learn-machine-learning/id6766640118)

Master the fundamentals of artificial intelligence and machine learning through interactive, hands-on lessons. Learn complex math concepts, core ML algorithms, neural networks, and cutting-edge AI models in just five minutes a day. Track your progress and stay motivated with daily streaks and leaderboards.

**Highlights:** Interactive math and concept visualization, Short, daily lessons, Covers math foundations to frontier AI, Gamified learning with streaks and leaderboards, Focus on practical ML understanding, AI-powered learning guide

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Axon Pro | $9.99 | per month |
| Axon Pro (Offer) | $39.99 | per year |
| Axon Pro | $69.99 | per year |
| Axon Sports Pass | $99.99 | per year |


## Frequently asked questions

### Is CS Pro Note free?

CS Pro Note is free to download, with in-app purchases available.

### Is Axon free?

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

### Do CS Pro Note or Axon have ads?

Neither CS Pro Note nor Axon shows ads.

### Which is updated more often, CS Pro Note or Axon?

CS Pro Note ships an update monthly, and Axon every 5 days. Most recently, CS Pro Note was updated on September 17, 2026 and Axon on September 21, 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.*