# uSpectrum MK350N vs Atomic Notes

The clearest difference is in-app purchases: uSpectrum MK350N at none against Atomic Notes's 2. uSpectrum MK350N also leads on iOS requirement (5.1.1 vs 13.0). Atomic Notes's advantage is update cadence (monthly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Atomic Notes sells 2 in-app purchases, starting at $3.99 per month. uSpectrum MK350N asks for nothing beyond the download.

uSpectrum MK350N ships an update every 2 months, Atomic Notes monthly. The most recent releases landed on October 10, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | uSpectrum MK350N | Atomic Notes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 29 MB | 77 MB |
| Requires iOS | **5.1.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [United Power Research Technology Corporation](https://appshunter.io/developer/1501316337) | [Brandon Guigo](https://appshunter.io/developer/1772643694) |

## What reviewers say

### uSpectrum MK350N

[App page](https://appshunter.io/ios/app/uspectrum-mk350n/id677053717)

**Features:** macOS Compatibility

**In-app purchases:** none


### Atomic Notes

[App page](https://appshunter.io/ios/app/atomic-notes/id6747767868)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cloud Monthly | $3.99 | per month |
| Cloud Yearly | $34.99 | per year |


## Frequently asked questions

### Is uSpectrum MK350N free?

uSpectrum MK350N is free to download, with no in-app purchases.

### Is Atomic Notes free?

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

### Do uSpectrum MK350N or Atomic Notes have ads?

Neither uSpectrum MK350N nor Atomic Notes shows ads.

### Which is updated more often, uSpectrum MK350N or Atomic Notes?

uSpectrum MK350N ships an update every 2 months, and Atomic Notes monthly. Most recently, uSpectrum MK350N was updated on October 10, 2026 and Atomic Notes on October 5, 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.*