# Interfere vs DuoLens

The clearest difference is update cadence: Interfere at every 9 days against DuoLens's every 2 months. Interfere also leads on device support (3 vs 1) and iOS requirement (15.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Interfere sells 4 in-app purchases, starting at $1.99 per month and DuoLens sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Interfere ships an update every 9 days, DuoLens every 2 months. The most recent releases landed on October 15, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Interfere | DuoLens |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (14 ratings)](https://appshunter.io/ios/app/interfere-moire-patterns/id1255287199/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 months |
| Monetization | Subscription | — |
| Size | 19 MB | 25 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Fabio Morreale](https://appshunter.io/developer/416447540) | [Dung Vu](https://appshunter.io/developer/1797970314) |

## What reviewers say

### Interfere

[App page](https://appshunter.io/ios/app/interfere-moire-patterns/id1255287199)

Create mesmerizing Moiré patterns and algorithmic artworks with an interactive generative drawing tool. Shape evolving geometries by moving control points on the canvas, generating layered variations and emergent structures. Export high-resolution images for further editing in other creative software.

**Highlights:** Generative Moiré and interference patterns, Control line density, curvature, and spacing, Interactive control point manipulation, Real-time pattern evolution, High-resolution JPG and vector export, Educational tool for interference phenomena

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $1.99 | per month |
| Drawing bundle - monthly | $3.99 | per month |
| Lifetime subscription | $9.99 | one-time |
| Drawing bundle - lifetime | $24.99 | one-time |


### DuoLens

[App page](https://appshunter.io/ios/app/duolens-dual-video-recorder/id6761377862)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $0.99 | one-time |


## Frequently asked questions

### Is Interfere free?

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

### Is DuoLens free?

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

### Do Interfere or DuoLens have ads?

Neither Interfere nor DuoLens shows ads.

### Which is updated more often, Interfere or DuoLens?

Interfere ships an update every 9 days, and DuoLens every 2 months. Most recently, Interfere was updated on October 15, 2026 and DuoLens on September 25, 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.*