# A.T.O.M. Streaming vs Contour

The clearest difference is price: Contour at Free against A.T.O.M. Streaming's $0.99. Contour also leads on update cadence (weekly vs every 3 months). A.T.O.M. Streaming's advantage is rating (5.0 vs 4.0) and in-app purchases (none vs 1). On ratings volume, ads, device support and iOS requirement there is nothing between them.

Contour is free to download; A.T.O.M. Streaming costs $0.99 up front. Contour sells 1 one-off in-app purchase. A.T.O.M. Streaming asks for nothing beyond the download.

A.T.O.M. Streaming holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

A.T.O.M. Streaming ships an update every 3 months, Contour weekly. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | A.T.O.M. Streaming | Contour |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/atom-streaming/id6740820356/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/contour-ambient-morph-synth/id6798038727/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Paid | **Freemium** |
| Size | 36 MB | 108 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Connor Trzcinski](https://appshunter.io/developer/1773639159) | [Chih Han Lin](https://appshunter.io/developer/1800248325) |

## What reviewers say

### A.T.O.M. Streaming

[App page](https://appshunter.io/ios/app/atom-streaming/id6740820356)

This platform allows users to stream music, upload original content, and connect with a community of artists and enthusiasts. It offers features for both listeners and creators, including profile customization and content moderation.

**Highlights:** Become an artist or listener, Unlimited original content uploads, Direct content upload from app, Profile link for brand sharing, Connect with music enthusiasts and artists, Copyright audio check, Artwork image check and flagging system

**In-app purchases:** none


### Contour

[App page](https://appshunter.io/ios/app/contour-ambient-morph-synth/id6798038727)

This app is a unique musical instrument played by touch. It uses a visual interface where your finger's position determines the sound, offering a novel way to create drones, textures, and pads. It also functions as an AUv3 plugin for use in other music production apps.

**Highlights:** Touch-based sound generation, Perceptual distance mapping, Eleven distinct sound sheets, MIDI input and ribbon controller, AUv3 plugin support, Recording functionality (Pro), Customizable sound sheets (Pro)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Contour Pro | $3.99 | one-time |


## Frequently asked questions

### Is A.T.O.M. Streaming free?

A.T.O.M. Streaming costs $0.99, with no in-app purchases.

### Is Contour free?

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

### Which has better reviews, A.T.O.M. Streaming or Contour?

A.T.O.M. Streaming is rated higher. A.T.O.M. Streaming averages 5.0 out of 5 from 1 ratings, while Contour averages 4.0 from 2 ratings.

### Do A.T.O.M. Streaming or Contour have ads?

Neither A.T.O.M. Streaming nor Contour shows ads.

### Which is updated more often, A.T.O.M. Streaming or Contour?

A.T.O.M. Streaming ships an update every 3 months, and Contour weekly. Most recently, A.T.O.M. Streaming was updated on October 24, 2026 and Contour on October 29, 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.*