# Tone Gen Pro vs smartDF

The clearest difference is in-app purchases: smartDF at none against Tone Gen Pro's 1. smartDF also leads on update cadence (weekly vs every 3 months). Tone Gen Pro's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 15.4). On price and ads there is nothing between them.

Both are free to download. Tone Gen Pro sells 1 one-off in-app purchase. smartDF asks for nothing beyond the download.

Tone Gen Pro ships an update every 3 months, smartDF weekly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Tone Gen Pro | smartDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (48 ratings)](https://appshunter.io/ios/app/tone-gen-pro/id1448112303/reviews)** | — |
| Number of ratings | **48** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 44 MB | 59 MB |
| Requires iOS | **12.0** | 15.4 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 12+ | 4+ |
| Developer | [Ibrahim Al-Sammarraie](https://appshunter.io/developer/1448112302) | [Carlos Yordanis Lago Gonzalez](https://appshunter.io/developer/1028936188) |

## What reviewers say

### Tone Gen Pro

[App page](https://appshunter.io/ios/app/tone-gen-pro/id1448112303)

Create various audio signals, including single tones, sweeps, and merged sounds, with extensive parameter control. Ideal for students, musicians, educators, and audio professionals exploring sound.

**Highlights:** Generate single type signals (sine, square, noise), Create sweep (chirp) signals (linear/exponential), Generate click signals with adjustable duty cycle, Merge multiple tones and sweeps, Frequencies up to 20 kHz, Extensive parameter control

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tone Gen Pro Full | $1.99 | one-time |


### smartDF

[App page](https://appshunter.io/ios/app/smartdf/id1568556062)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tone Gen Pro free?

Tone Gen Pro is free to download, with in-app purchases available.

### Is smartDF free?

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

### Do Tone Gen Pro or smartDF have ads?

Neither Tone Gen Pro nor smartDF shows ads.

### Which is updated more often, Tone Gen Pro or smartDF?

Tone Gen Pro ships an update every 3 months, and smartDF weekly. Most recently, Tone Gen Pro was updated on October 24, 2026 and smartDF on October 25, 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.*