# Charis Analytics vs PreFlight

The clearest difference is in-app purchases: Charis Analytics at none against PreFlight's 1. Charis Analytics also leads on update cadence (monthly vs every 3 months) and iOS requirement (13.4 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. PreFlight sells 1 one-off in-app purchase. Charis Analytics asks for nothing beyond the download.

Charis Analytics ships an update monthly, PreFlight every 3 months. The most recent releases landed on September 23, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Charis Analytics | PreFlight |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Size | 34 MB | 6 MB |
| Requires iOS | **13.4** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [CHARIS UNMANNED AERIAL SOLUTIONS (CHARIS UAS) LTD](https://appshunter.io/developer/1747960942) | [Scott Manley](https://appshunter.io/developer/1864388985) |

## What reviewers say

### Charis Analytics

[App page](https://appshunter.io/ios/app/charis-analytics/id6503086732)

**Features:** macOS Compatibility

**In-app purchases:** none


### PreFlight

[App page](https://appshunter.io/ios/app/preflight-drone-checklist/id6759703555)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PreFlight Pro | $1.99 | one-time |


## Frequently asked questions

### Is Charis Analytics free?

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

### Is PreFlight free?

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

### Do Charis Analytics or PreFlight have ads?

Neither Charis Analytics nor PreFlight shows ads.

### Which is updated more often, Charis Analytics or PreFlight?

Charis Analytics ships an update monthly, and PreFlight every 3 months. Most recently, Charis Analytics was updated on September 23, 2026 and PreFlight on September 19, 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.*