# Audio Tone Generator Plus vs SkyScan

The clearest difference is update cadence: SkyScan at every 2 days against Audio Tone Generator Plus's every 6 months. SkyScan also leads on price ($0.99 vs $6.99) and iOS requirement (16.0 vs 26.2). On ads, in-app purchases and device support there is nothing between them.

Audio Tone Generator Plus costs $6.99 and SkyScan $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Audio Tone Generator Plus ships an update every 6 months, SkyScan every 2 days. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Audio Tone Generator Plus | SkyScan |
| --- | --- | --- |
| Price | $6.99 | **$0.99** |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/skyscan-uap/id6504775569/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 days** |
| Monetization | — | Paid |
| Size | 1 MB | 55 MB |
| Requires iOS | 26.2 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TOON,LLC](https://appshunter.io/developer/633948723) | [John Mock](https://appshunter.io/developer/1753768432) |

## What reviewers say

### Audio Tone Generator Plus

[App page](https://appshunter.io/ios/app/audio-tone-generator-plus/id1619042820)

**In-app purchases:** none


### SkyScan

[App page](https://appshunter.io/ios/app/skyscan-uap/id6504775569)

This app uses AI to detect and automatically record unusual objects in the sky. It's designed for sky watchers, pilots, and researchers to capture sightings without missing a moment. The user-friendly interface makes it easy to document extraordinary phenomena.

**Highlights:** AI object detection, Automatic video recording, Pilot-friendly features, Ground and in-flight use, User-friendly interface, Manual recording control

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

**In-app purchases:** none


## Frequently asked questions

### Is Audio Tone Generator Plus free?

Audio Tone Generator Plus costs $6.99, with no in-app purchases.

### Is SkyScan free?

SkyScan costs $0.99, with no in-app purchases.

### Do Audio Tone Generator Plus or SkyScan have ads?

Neither Audio Tone Generator Plus nor SkyScan shows ads.

### Which is updated more often, Audio Tone Generator Plus or SkyScan?

Audio Tone Generator Plus ships an update every 6 months, and SkyScan every 2 days. Most recently, Audio Tone Generator Plus was updated on November 7, 2026 and SkyScan on October 30, 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.*