# Grandpa Notes vs UnitNote

The clearest difference is update cadence: UnitNote at every 8 days against Grandpa Notes's every 20 months. 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.

Grandpa Notes ships an update every 20 months, UnitNote every 8 days. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Grandpa Notes | UnitNote |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 8 days** |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 51 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Julien Eyriès](https://appshunter.io/developer/414653864) | [SOON HUH](https://appshunter.io/developer/6795952120) |

## What reviewers say

### Grandpa Notes

[App page](https://appshunter.io/ios/app/grandpa-notes/id1643176779)

**Features:** macOS Compatibility

**In-app purchases:** none


### UnitNote

[App page](https://appshunter.io/ios/app/unitnote-conversor/id6795952118)

This tool simplifies unit conversions for everyday and professional needs. Customize your home screen with unit cards, perform quick calculations with a numeric keypad and formula input, and compare values across different units in a workspace. It supports a wide range of units and offers multiple themes and languages.

**Highlights:** Customizable home screen with unit cards, Numeric keypad and formula input, Intuitive unit selection and card arrangement, Workspace for comparing multiple unit conversions, Support for diverse units (length, area, volume, etc.), Favorites and recent history, Multiple themes and languages

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

**In-app purchases:** none


## Frequently asked questions

### Is Grandpa Notes free?

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

### Is UnitNote free?

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

### Do Grandpa Notes or UnitNote have ads?

Neither Grandpa Notes nor UnitNote shows ads.

### Which is updated more often, Grandpa Notes or UnitNote?

Grandpa Notes ships an update every 20 months, and UnitNote every 8 days. Most recently, Grandpa Notes was updated on September 10, 2026 and UnitNote on September 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.*