# Tone Generator Ultra vs Audio Object

The clearest difference is price: Audio Object at Free against Tone Generator Ultra's $1.99. Audio Object also leads on rating (5.0 vs 3.4) and in-app purchases (none vs 1). Tone Generator Ultra's advantage is ratings volume (8 vs 1) and iOS requirement (7.0 vs 17.0). On ads and device support there is nothing between them.

Audio Object is free to download; Tone Generator Ultra costs $1.99 up front. Tone Generator Ultra sells 1 one-off in-app purchase. Audio Object asks for nothing beyond the download.

Audio Object holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: Tone Generator Ultra has 8 ratings behind it against 1, so its average is the more settled of the two.

Tone Generator Ultra ships an update every 7 months, Audio Object every 2 months. The most recent releases landed on October 20, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Tone Generator Ultra | Audio Object |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [3.4 (8 ratings)](https://appshunter.io/ios/app/tone-generator-ultra/id514273546/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/audio-object/id6783546700/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 57.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 3 MB | 12 MB |
| Requires iOS | **7.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [4Pockets.com](https://appshunter.io/developer/370131860) | [Green Rose Systems, LLC](https://appshunter.io/developer/6783546702) |

## What reviewers say

### Tone Generator Ultra

[App page](https://appshunter.io/ios/app/tone-generator-ultra/id514273546)

Generate a wide range of audio test tones and frequencies, from sine waves to white noise. Ideal for audio system calibration, speaker testing, and acoustic analysis. Offers advanced features like chromatic pitch detection and sweep utilities.

**Highlights:** Sine, Square & Sawtooth Wave Generation, Chromatic pitch detection, White and pink noise generation, Multi-tone generator, Logarithmic / linear sweep utility, Frequency range 20Hz to 22kHz

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Tone Generator Ultra | $1.99 | one-time |


### Audio Object

[App page](https://appshunter.io/ios/app/audio-object/id6783546700)

This pocket-sized instrument turns your iPhone into a portable music creation studio. It features a four-track looper, a three-voice drum machine, and an eight-pad sampler with extensive editing capabilities. Seamlessly integrate with your Mac DAW via USB for professional workflows.

**Highlights:** Four-track looper with bar-quantized recording, Three-voice drum machine click track, Eight-pad sampler with EQ and varispeed, Project save, load, and WAV stem export, Stereo audio streaming to Mac DAWs via USB, MIDI clock output over USB, Records stereo from Core Audio interfaces

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

**In-app purchases:** none


## Frequently asked questions

### Is Tone Generator Ultra free?

Tone Generator Ultra costs $1.99, and also offers in-app purchases.

### Is Audio Object free?

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

### Which has better reviews, Tone Generator Ultra or Audio Object?

Audio Object is rated higher. Tone Generator Ultra averages 3.4 out of 5 from 8 ratings, while Audio Object averages 5.0 from 1 ratings.

### Do Tone Generator Ultra or Audio Object have ads?

Neither Tone Generator Ultra nor Audio Object shows ads.

### Which is updated more often, Tone Generator Ultra or Audio Object?

Tone Generator Ultra ships an update every 7 months, and Audio Object every 2 months. Most recently, Tone Generator Ultra was updated on October 20, 2026 and Audio Object on October 14, 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.*