# AviCalc vs Notamify

The clearest difference is in-app purchases: AviCalc at none against Notamify's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Notamify sells 1 in-app purchase, starting at $29.99 per month. AviCalc asks for nothing beyond the download.

AviCalc ships an update every 3 weeks, Notamify every 11 days. The most recent releases landed on October 7, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | AviCalc | Notamify |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Size | 9 MB | 58 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Aldo Mendes Martins](https://appshunter.io/developer/377344895) | [Skymerse Inc.](https://appshunter.io/developer/6790844949) |

## What reviewers say

### AviCalc

[App page](https://appshunter.io/ios/app/avicalc/id6474237308)

**Features:** macOS Compatibility

**In-app purchases:** none


### Notamify

[App page](https://appshunter.io/ios/app/notamify/id6790844947)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Notamify Pro iOS | $29.99 | per month |


## Frequently asked questions

### Is AviCalc free?

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

### Is Notamify free?

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

### Do AviCalc or Notamify have ads?

Neither AviCalc nor Notamify shows ads.

### Which is updated more often, AviCalc or Notamify?

AviCalc ships an update every 3 weeks, and Notamify every 11 days. Most recently, AviCalc was updated on October 7, 2026 and Notamify on September 28, 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.*