# Notilify vs Calculator + AR Ruler BLACK #1

The clearest difference is in-app purchases: Notilify at none against Calculator + AR Ruler BLACK #1's 1. Calculator + AR Ruler BLACK #1's advantage is update cadence (every 9 days vs every 5 months) and ratings volume (19 vs 2). On price, rating, ads and device support there is nothing between them.

Both are free to download. Calculator + AR Ruler BLACK #1 sells 1 one-off in-app purchase. Notilify asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Notilify against 5.0 for Calculator + AR Ruler BLACK #1. That said, the two scores are not equally well evidenced: Calculator + AR Ruler BLACK #1 has 19 ratings behind it against 2, so its average is the more settled of the two.

Notilify ships an update every 5 months, Calculator + AR Ruler BLACK #1 every 9 days. Both last shipped on November 3, 2026.

## The numbers

| Metric | Notilify | Calculator + AR Ruler BLACK #1 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/notilify/id1668591119/reviews) | [5.0 (19 ratings)](https://appshunter.io/ios/app/calculator-plus-ar-ruler-black-1/id6443492349/reviews) |
| Number of ratings | 2 | **19** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 11 MB | 15 MB |
| Requires iOS | 16.2 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ariel Araya-Madrigal](https://appshunter.io/developer/1623018170) | [DIGIID LLC](https://appshunter.io/developer/1051432431) |

## 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


### Calculator + AR Ruler BLACK #1

[App page](https://appshunter.io/ios/app/calculator-plus-ar-ruler-black-1/id6443492349)

This utility app combines a standard calculator with an augmented reality ruler. Measure lengths by tapping points on your screen and instantly convert units. Perform calculations on surface area or other metrics using the integrated calculator.

**Highlights:** Augmented reality measuring ruler, Basic mathematical functions, Multiple unit conversion, Tap to measure length, Integrated calculator for surface area

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Platinum VIP Membership | $999.99 | one-time |


## Frequently asked questions

### Is Notilify free?

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

### Is Calculator + AR Ruler BLACK #1 free?

Calculator + AR Ruler BLACK #1 is free to download, with in-app purchases available.

### Which has better reviews, Notilify or Calculator + AR Ruler BLACK #1?

Notilify and Calculator + AR Ruler BLACK #1 are both rated 5.0 out of 5 on the App Store, from 2 and 19 ratings respectively.

### Do Notilify or Calculator + AR Ruler BLACK #1 have ads?

Neither Notilify nor Calculator + AR Ruler BLACK #1 shows ads.

### Which is updated more often, Notilify or Calculator + AR Ruler BLACK #1?

Notilify ships an update every 5 months, and Calculator + AR Ruler BLACK #1 every 9 days. Most recently, Notilify was updated on November 3, 2026 and Calculator + AR Ruler BLACK #1 on November 3, 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.*