# Lyttony vs Sub System

The clearest difference is price: Lyttony at Free against Sub System's $30.00. Sub System's advantage is in-app purchases (none vs 2) and update cadence (every 10 days vs every 36 months). On review sentiment, ads, device support and iOS requirement there is nothing between them.

Lyttony is free to download; Sub System costs $30.00 up front. Lyttony sells 2 one-off in-app purchases. Sub System asks for nothing beyond the download.

Lyttony ships an update every 36 months, Sub System every 10 days. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Lyttony | Sub System |
| --- | --- | --- |
| Price | **Free** | $30.00 |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/lyttony/id1329510137/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 10 days** |
| Monetization | **Free** | Paid |
| Size | 70 MB | 48 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Eduard Schwan](https://appshunter.io/developer/594336989) | [sebastian rivas](https://appshunter.io/developer/506708461) |

## What reviewers say

### Lyttony

[App page](https://appshunter.io/ios/app/lyttony/id1329510137)

Generate endless creative story openers and writing prompts. This app provides thought-provoking opening lines for authors, students, and anyone needing daily writing inspiration. Easily customize stories and share your favorites.

**Highlights:** Generates millions of original story openers, Personalized story customization, Bookmark and rewind favorite openers, Read stories aloud, Daily writing prompts via notifications, Global synchronized story generation, Shake to generate new opener (iOS)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Read stories aloud | $0.99 | one-time |
| Global-Sync | $0.99 | one-time |


### Sub System

[App page](https://appshunter.io/ios/app/sub-system/id1533524994)

This app allows audio engineers and sound designers to visualize sound pressure levels and their interactions. Users can place virtual speakers and microphones, manipulate them with touch gestures, and observe colorful graphs of SPL and frequency response to understand acoustical summation.

**Highlights:** Virtual speaker placement, Sound pressure level visualization, Frequency response graphs, Virtual microphone simulation, Touch-based manipulation, Acoustical summation understanding

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

**In-app purchases:** none


## Frequently asked questions

### Is Lyttony free?

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

### Is Sub System free?

Sub System costs $30.00, with no in-app purchases.

### Do Lyttony or Sub System have ads?

Neither Lyttony nor Sub System shows ads.

### Which is updated more often, Lyttony or Sub System?

Lyttony ships an update every 36 months, and Sub System every 10 days. Most recently, Lyttony was updated on October 1, 2026 and Sub System on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*