# Altimeter X. vs Kapi Note

The clearest difference is ads: Altimeter X. at none against Kapi Note's shown. Altimeter X. also leads on iOS requirement (13.0 vs 15.0). Kapi Note's advantage is device support (4 vs 2). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Altimeter X. sells 1 one-off in-app purchase and Kapi Note sells 7 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Altimeter X. ships an update every 5 days, Kapi Note weekly. The most recent releases landed on September 8, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Altimeter X. | Kapi Note |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Weekly |
| Size | 49 MB | 149 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Hubert Willy Lehmann](https://appshunter.io/developer/1684815110) | [Liisgo LLC](https://appshunter.io/developer/1839858977) |

## What reviewers say

### Altimeter X.

[App page](https://appshunter.io/ios/app/altimeter-x/id6708236560)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Kapi Note

[App page](https://appshunter.io/ios/app/kapi-note/id6752557170)

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kapi Note Premium | $0.99 | per month |
| Kapi Note Premium Annual | $9.99 | per year |
| 250 Kapi Coins | $0.99 | one-time |
| 800 Kapi Coins | $2.99 | one-time |
| 1500 Kapi Coins | $4.99 | one-time |
| 3300 Kapi Coins | $9.99 | one-time |
| 7000 Kapi Coins | $19.99 | one-time |


## Frequently asked questions

### Is Altimeter X. free?

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

### Is Kapi Note free?

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

### Do Altimeter X. or Kapi Note have ads?

Kapi Note shows ads; Altimeter X. does not.

### Which is updated more often, Altimeter X. or Kapi Note?

Altimeter X. ships an update every 5 days, and Kapi Note weekly. Most recently, Altimeter X. was updated on September 8, 2026 and Kapi Note on September 15, 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.*