# Nidus Notes vs PaperUno

The clearest difference is update cadence: Nidus Notes at every 2 days against PaperUno's every 2 weeks. PaperUno's advantage is iOS requirement (15.6 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Nidus Notes ships an update every 2 days, PaperUno every 2 weeks. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Nidus Notes | PaperUno |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Size | 6 MB | 71 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gleipnir LLC](https://appshunter.io/developer/1813202167) | [炯炯 胡](https://appshunter.io/developer/1774315636) |

## What reviewers say

### Nidus Notes

[App page](https://appshunter.io/ios/app/nidus-notes/id6745621956)

**Features:** macOS Compatibility

**In-app purchases:** none


### PaperUno

[App page](https://appshunter.io/ios/app/paperuno-grid-and-graph-maker/id6784046887)

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

**In-app purchases:** none


## Frequently asked questions

### Is Nidus Notes free?

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

### Is PaperUno free?

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

### Do Nidus Notes or PaperUno have ads?

Neither Nidus Notes nor PaperUno shows ads.

### Which is updated more often, Nidus Notes or PaperUno?

Nidus Notes ships an update every 2 days, and PaperUno every 2 weeks. Most recently, Nidus Notes was updated on September 9, 2026 and PaperUno on September 18, 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.*