# SENTRY Drone vs KAI FLY

The clearest difference is update cadence: SENTRY Drone at monthly against KAI FLY's every 6 months. SENTRY Drone also leads on iOS requirement (9.0 vs 12.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SENTRY Drone ships an update monthly, KAI FLY every 6 months. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | SENTRY Drone | KAI FLY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (4 ratings)](https://appshunter.io/ios/app/sentry-drone/id1595293165/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 months |
| Monetization | Free | — |
| Size | 127 MB | 175 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [文 张](https://appshunter.io/developer/1512068135) | [荣军 杨](https://appshunter.io/developer/1494250848) |

## What reviewers say

### SENTRY Drone

[App page](https://appshunter.io/ios/app/sentry-drone/id1595293165)

Control a drone with real-time image transmission. Capture photos and videos using buttons or gestures. Offers multiple control modes including rocker, gravity induction, and scribing flight, with VR split-screen support.

**Highlights:** Real-time image transmission, Photo and video capture, Gesture control, Rocker control, Gravity induction control, Scribing flight, VR split screen

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

**In-app purchases:** none


### KAI FLY

[App page](https://appshunter.io/ios/app/kai-fly/id6471225766)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SENTRY Drone free?

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

### Is KAI FLY free?

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

### Do SENTRY Drone or KAI FLY have ads?

Neither SENTRY Drone nor KAI FLY shows ads.

### Which is updated more often, SENTRY Drone or KAI FLY?

SENTRY Drone ships an update monthly, and KAI FLY every 6 months. Most recently, SENTRY Drone was updated on October 7, 2026 and KAI FLY on October 2, 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.*