# A Random Number Generator vs Wavelet Voice Sonogram

The clearest difference is update cadence: A Random Number Generator at weekly against Wavelet Voice Sonogram's every 8 months. A Random Number Generator also leads on price ($0.99 vs $6.99) and device support (3 vs 1). Wavelet Voice Sonogram's advantage is chart position (#190 vs unranked). On ads and in-app purchases there is nothing between them.

A Random Number Generator costs $0.99 and Wavelet Voice Sonogram $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

A Random Number Generator ships an update weekly, Wavelet Voice Sonogram every 8 months. The most recent releases landed on August 24, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | A Random Number Generator | Wavelet Voice Sonogram |
| --- | --- | --- |
| Price | **$0.99** | $6.99 |
| Rating | **[4.9 (7 ratings)](https://appshunter.io/ios/app/a-random-number-generator/id1137384767/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 8 months |
| Monetization | Paid | — |
| Best chart rank | — | **#190** |
| Size | 3 MB | 0 MB |
| Requires iOS | **15.6** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Zero Pixels LLC](https://appshunter.io/developer/1780257785) | [TOON,LLC](https://appshunter.io/developer/633948723) |

## What reviewers say

### A Random Number Generator

[App page](https://appshunter.io/ios/app/a-random-number-generator/id1137384767)

Easily generate random numbers within a specified range. Simply select your desired minimum and maximum values, then tap the screen to get a randomized result. Perfect for quick decisions or games.

**Highlights:** User-defined number range, Simple tap-to-randomize interface, Easy to use, Quick decision making tool

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

**In-app purchases:** none


### Wavelet Voice Sonogram

[App page](https://appshunter.io/ios/app/wavelet-voice-sonogram/id1574131130)

**Currently charting:** #190 Top Paid · Utilities (US App Store)

**In-app purchases:** none


## Frequently asked questions

### Is A Random Number Generator free?

A Random Number Generator costs $0.99, with no in-app purchases.

### Is Wavelet Voice Sonogram free?

Wavelet Voice Sonogram costs $6.99, with no in-app purchases.

### Do A Random Number Generator or Wavelet Voice Sonogram have ads?

Neither A Random Number Generator nor Wavelet Voice Sonogram shows ads.

### Which is updated more often, A Random Number Generator or Wavelet Voice Sonogram?

A Random Number Generator ships an update weekly, and Wavelet Voice Sonogram every 8 months. Most recently, A Random Number Generator was updated on August 24, 2026 and Wavelet Voice Sonogram on September 26, 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.*