# Grasswhistle vs apeCsound

The clearest difference is in-app purchases: apeCsound at none against Grasswhistle's 2. Grasswhistle's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17). On price, update cadence and ads there is nothing between them.

Both are free to download. Grasswhistle sells 2 one-off in-app purchases. apeCsound asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on November 15, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Grasswhistle | apeCsound |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/grasswhistle/id6821031151/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 days | Every 2 days |
| Monetization | Free | — |
| Size | 18 MB | 33 MB |
| Requires iOS | **13.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aqeel Aadam](https://appshunter.io/developer/1724235864) | [apeSoft](https://appshunter.io/developer/464660782) |

## What reviewers say

### Grasswhistle

[App page](https://appshunter.io/ios/app/grasswhistle/id6821031151)

Create unique melodies from chord progressions with a customizable arpeggiator. Offers randomization, performance options, and over 50 presets. Use it as a standalone instrument or a MIDI effect to sequence other devices.

**Highlights:** Customizable arpeggios, Chord progression sequencing, Randomization features, Performance options, 50+ factory presets, Standalone instrument, MIDI effect

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small coffee | $3.00 | one-time |
| Large coffee | $5.00 | one-time |


### apeCsound

[App page](https://appshunter.io/ios/app/apecsound/id6821382219)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Grasswhistle free?

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

### Is apeCsound free?

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

### Do Grasswhistle or apeCsound have ads?

Neither Grasswhistle nor apeCsound shows ads.

### Which is updated more often, Grasswhistle or apeCsound?

Grasswhistle ships an update every 2 days, and apeCsound every 2 days. Most recently, Grasswhistle was updated on November 15, 2026 and apeCsound on November 10, 2026.

---

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