# SpoolStack vs KatMon

The clearest difference is in-app purchases: KatMon at none against SpoolStack's 2. KatMon also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SpoolStack sells 2 in-app purchases, starting at $4.99 per month. KatMon asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on September 26, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | SpoolStack | KatMon |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 days | Every 2 days |
| Size | 13 MB | 33 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Matthew Howell](https://appshunter.io/developer/1744641447) | [Olcay OREN](https://appshunter.io/developer/1894051255) |

## What reviewers say

### SpoolStack

[App page](https://appshunter.io/ios/app/spoolstack/id6762043296)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpoolStack Pro Monthly | $4.99 | per month |
| SpoolStack Pro Yearly | $49.99 | per year |


### KatMon

[App page](https://appshunter.io/ios/app/katmon/id6762404551)

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

**In-app purchases:** none


## Frequently asked questions

### Is SpoolStack free?

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

### Is KatMon free?

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

### Do SpoolStack or KatMon have ads?

Neither SpoolStack nor KatMon shows ads.

### Which is updated more often, SpoolStack or KatMon?

SpoolStack ships an update every 2 days, and KatMon every 2 days. Most recently, SpoolStack was updated on September 26, 2026 and KatMon on October 3, 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.*