# Celesta Sim vs FLX.fm

The clearest difference is in-app purchases: FLX.fm at none against Celesta Sim's 1. FLX.fm also leads on ads (none vs shown) and update cadence (every 6 days vs every 4 months). Celesta Sim's advantage is iOS requirement (12.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Celesta Sim sells 1 one-off in-app purchase. FLX.fm asks for nothing beyond the download.

Celesta Sim ships an update every 4 months, FLX.fm every 6 days. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Celesta Sim | FLX.fm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/celesta-sim/id6738886432/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 119 MB | 35 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Alper Kahriman](https://appshunter.io/developer/1054578352) | [Finger Lakes Radio Group](https://appshunter.io/developer/423440123) |

## What reviewers say

### Celesta Sim

[App page](https://appshunter.io/ios/app/celesta-sim/id6738886432)

This app brings the enchanting, bell-like tones of the celesta to your fingertips. Explore authentic sounds, multiple play modes, and built-in effects to create and share your music.

**Highlights:** Authentic celesta sound samples, Multiple sound and play modes, Real-time reverb and chorus effects, Sensitive touch dynamics, Microtonal tuning, Built-in audio recorder, Customizable keyboard layout

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get Premium | $9.99 | one-time |


### FLX.fm

[App page](https://appshunter.io/ios/app/flxfm/id6763206856)

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

**In-app purchases:** none


## Frequently asked questions

### Is Celesta Sim free?

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

### Is FLX.fm free?

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

### Do Celesta Sim or FLX.fm have ads?

Celesta Sim shows ads; FLX.fm does not.

### Which is updated more often, Celesta Sim or FLX.fm?

Celesta Sim ships an update every 4 months, and FLX.fm every 6 days. Most recently, Celesta Sim was updated on October 8, 2026 and FLX.fm on October 9, 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.*