# Spectroslide vs True Random Numbers

The clearest difference is in-app purchases: Spectroslide at none against True Random Numbers's 1. Spectroslide also leads on ads (none vs shown). True Random Numbers's advantage is update cadence (every 2 days vs every 9 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. True Random Numbers sells 1 one-off in-app purchase. Spectroslide asks for nothing beyond the download.

Spectroslide ships an update every 9 months, True Random Numbers every 2 days. The most recent releases landed on September 28, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Spectroslide | True Random Numbers |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 2 days** |
| Size | 2 MB | 5 MB |
| Requires iOS | **17.5** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eric Hamiter](https://appshunter.io/developer/1482332471) | [Frank Buss](https://appshunter.io/developer/1555803140) |

## What reviewers say

### Spectroslide

[App page](https://appshunter.io/ios/app/spectroslide/id6677062885)

**Features:** macOS Compatibility

**In-app purchases:** none


### True Random Numbers

[App page](https://appshunter.io/ios/app/true-random-numbers/id6744599442)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Spectroslide free?

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

### Is True Random Numbers free?

True Random Numbers is free to download, with in-app purchases available.

### Do Spectroslide or True Random Numbers have ads?

True Random Numbers shows ads; Spectroslide does not.

### Which is updated more often, Spectroslide or True Random Numbers?

Spectroslide ships an update every 9 months, and True Random Numbers every 2 days. Most recently, Spectroslide was updated on September 28, 2026 and True Random Numbers on September 20, 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.*