# Tone Generator Ultra vs Note Spark

The clearest difference is in-app purchases: Note Spark at none against Tone Generator Ultra's 1. Note Spark also leads on update cadence (weekly vs every 7 months). Tone Generator Ultra's advantage is iOS requirement (7.0 vs 18.0). On price, ads and device support there is nothing between them.

Tone Generator Ultra costs $1.99 and Note Spark $1.99 up front. Tone Generator Ultra sells 1 one-off in-app purchase. Note Spark asks for nothing beyond the download.

Tone Generator Ultra ships an update every 7 months, Note Spark weekly. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Tone Generator Ultra | Note Spark |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | **[3.4 (8 ratings)](https://appshunter.io/ios/app/tone-generator-ultra/id514273546/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 57.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 3 MB | 49 MB |
| Requires iOS | **7.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [4Pockets.com](https://appshunter.io/developer/370131860) | [manolofdez](https://appshunter.io/developer/530283706) |

## 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 |


### Note Spark

[App page](https://appshunter.io/ios/app/note-spark/id6740782864)

**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 Note Spark free?

Note Spark costs $1.99, with no in-app purchases.

### Do Tone Generator Ultra or Note Spark have ads?

Neither Tone Generator Ultra nor Note Spark shows ads.

### Which is updated more often, Tone Generator Ultra or Note Spark?

Tone Generator Ultra ships an update every 7 months, and Note Spark weekly. Most recently, Tone Generator Ultra was updated on October 14, 2026 and Note Spark on October 7, 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.*