# CTOT vs Density Converter

The clearest difference is price: CTOT at Free against Density Converter's $1.99. CTOT also leads on update cadence (monthly vs every 38 months). Density Converter's advantage is in-app purchases (none vs 2) and iOS requirement (13.4 vs 16.4). On ads and device support there is nothing between them.

CTOT is free to download; Density Converter costs $1.99 up front. CTOT sells 2 in-app purchases, starting at $1.99 per month. Density Converter asks for nothing beyond the download.

CTOT ships an update monthly, Density Converter every 38 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | CTOT | Density Converter |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | 47.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 38 months |
| Monetization | Free with in-app purchases | — |
| Size | 68 MB | 0 MB |
| Requires iOS | 16.4 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CTOT.app](https://appshunter.io/developer/1752292025) | [Anna Filobok](https://appshunter.io/developer/1613515832) |

## What reviewers say

### CTOT

[App page](https://appshunter.io/ios/app/ctot/id1513174766)

Provides live flight plan information for aviation professionals. Get real-time updates on CTOT, FPL status, and airport weather. Requires enrollment by your organization to use.

**Highlights:** Live CTOT notifications, Flight plan status updates, CDM information, Airport METAR and TAF, Flight watchlist, Regulation cause decoding

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly plan | $1.99 | per month |
| CTOT 6 month plan | $8.49 | per 6 months |


### Density Converter

[App page](https://appshunter.io/ios/app/density-converter/id1539270045)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CTOT free?

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

### Is Density Converter free?

Density Converter costs $1.99, with no in-app purchases.

### Do CTOT or Density Converter have ads?

Neither CTOT nor Density Converter shows ads.

### Which is updated more often, CTOT or Density Converter?

CTOT ships an update monthly, and Density Converter every 38 months. Most recently, CTOT was updated on November 3, 2026 and Density Converter 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.*