# iSup vs Frequency Generator

The clearest difference is in-app purchases: iSup at none against Frequency Generator's 2. iSup also leads on iOS requirement (14.0 vs 18.6). Frequency Generator's advantage is update cadence (every 3 weeks vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. Frequency Generator sells 2 in-app purchases, starting at $3.99 per 7 days. iSup asks for nothing beyond the download.

iSup ships an update every 6 months, Frequency Generator every 3 weeks. The most recent releases landed on September 10, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | iSup | Frequency Generator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Size | 36 MB | 282 MB |
| Requires iOS | **14.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Orthofix Srl](https://appshunter.io/developer/617333146) | [Emre Atik](https://appshunter.io/developer/1686436153) |

## What reviewers say

### iSup

[App page](https://appshunter.io/ios/app/isup/id1496003098)

**Features:** macOS Compatibility

**In-app purchases:** none


### Frequency Generator

[App page](https://appshunter.io/ios/app/frequency-generatorsound-wave/id6752813377)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Days Free Trial Weekly PRO | $3.99 | per 7 days |
| Sona Annual PRO | $19.99 | per year |


## Frequently asked questions

### Is iSup free?

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

### Is Frequency Generator free?

Frequency Generator is free to download, with in-app purchases available.

### Do iSup or Frequency Generator have ads?

Neither iSup nor Frequency Generator shows ads.

### Which is updated more often, iSup or Frequency Generator?

iSup ships an update every 6 months, and Frequency Generator every 3 weeks. Most recently, iSup was updated on September 10, 2026 and Frequency Generator on September 8, 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.*