# Notilify vs Unit Eater

The clearest difference is in-app purchases: Notilify at none against Unit Eater's 2. Unit Eater's advantage is update cadence (every 2 weeks vs every 5 months) and device support (4 vs 2). On price and ads there is nothing between them.

Both are free to download. Unit Eater sells 2 in-app purchases, starting at $0.99 per month. Notilify asks for nothing beyond the download.

Notilify ships an update every 5 months, Unit Eater every 2 weeks. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Notilify | Unit Eater |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/notilify/id1668591119/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 11 MB | 65 MB |
| Requires iOS | 16.2 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Ariel Araya-Madrigal](https://appshunter.io/developer/1623018170) | [Tom Leon Schmidt](https://appshunter.io/developer/1634212175) |

## What reviewers say

### Notilify

[App page](https://appshunter.io/ios/app/notilify/id1668591119)

This pocket solver tackles common everyday problems like scientific notation, percentages, interest calculations, and various number system conversions. It aims to be a versatile tool for quick problem-solving.

**Highlights:** Scientific notation solver, Percentage calculator, Interest calculations, MLA formatting, Binary and Hexadecimal conversion

**Features:** macOS Compatibility

**In-app purchases:** none


### Unit Eater

[App page](https://appshunter.io/ios/app/unit-eater/id6742549723)

This utility app functions as a powerful calculator that handles unit conversions and calculations. It supports a vast array of predefined units and allows users to define their own, making it ideal for scientific and academic tasks. Features include a calculation history, customizable results, and dark mode.

**Highlights:** Unit conversion and calculation, Custom unit definition, Extensive unit library, Calculation history, Customizable result format, Dark mode

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Monthly | $0.99 | per month |
| Premium - Pay once | $3.99 | one-time |


## Frequently asked questions

### Is Notilify free?

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

### Is Unit Eater free?

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

### Do Notilify or Unit Eater have ads?

Neither Notilify nor Unit Eater shows ads.

### Which is updated more often, Notilify or Unit Eater?

Notilify ships an update every 5 months, and Unit Eater every 2 weeks. Most recently, Notilify was updated on October 2, 2026 and Unit Eater on September 30, 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.*