# PiSquared vs Sticky Notes

The clearest difference is price: Sticky Notes at Free against PiSquared's $1.99. Sticky Notes also leads on update cadence (fortnightly vs every 23 months). PiSquared's advantage is iOS requirement (13.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Sticky Notes is free to download; PiSquared costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PiSquared ships an update every 23 months, Sticky Notes fortnightly. The most recent releases landed on September 28, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | PiSquared | Sticky Notes |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.7 (15 ratings)](https://appshunter.io/ios/app/sticky-notes-posty/id6773124334/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 3 MB | 27 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hartwig Wiesmann](https://appshunter.io/developer/1658877258) | [JOSE IALEJANDRO GUERRERO](https://appshunter.io/developer/1829565801) |

## What reviewers say

### PiSquared

[App page](https://appshunter.io/ios/app/pisquared/id1615268645)

**Features:** Apple Watch app

**In-app purchases:** none


### Sticky Notes

[App page](https://appshunter.io/ios/app/sticky-notes-posty/id6773124334)

Capture thoughts, lists, and sketches on digital sticky notes. Organize and highlight important items for easy access via widgets and Live Activities. Enjoy a clutter-free way to manage your daily tasks and ideas.

**Highlights:** Digital sticky notes, Text, todo, and drawing notes, Colorful note styles, Saved notes gallery, Home Screen widgets, Live Activity support

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

**In-app purchases:** none


## Frequently asked questions

### Is PiSquared free?

PiSquared costs $1.99, with no in-app purchases.

### Is Sticky Notes free?

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

### Do PiSquared or Sticky Notes have ads?

Neither PiSquared nor Sticky Notes shows ads.

### Which is updated more often, PiSquared or Sticky Notes?

PiSquared ships an update every 23 months, and Sticky Notes fortnightly. Most recently, PiSquared was updated on September 28, 2026 and Sticky Notes on October 17, 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.*