# Duotone Image Effect vs PrismSplit

The clearest difference is in-app purchases: Duotone Image Effect at none against PrismSplit's 1. PrismSplit's advantage is update cadence (fortnightly vs every 2 months) and iOS requirement (12.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. PrismSplit sells 1 one-off in-app purchase. Duotone Image Effect asks for nothing beyond the download.

Duotone Image Effect ships an update every 2 months, PrismSplit fortnightly. Both last shipped on September 19, 2026.

## The numbers

| Metric | Duotone Image Effect | PrismSplit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 18 MB | 38 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ryouhei Azuma](https://appshunter.io/developer/1353297781) | [Hiro Suzuki](https://appshunter.io/developer/1519578258) |

## What reviewers say

### Duotone Image Effect

[App page](https://appshunter.io/ios/app/duotone-image-effect/id6754188984)

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

**In-app purchases:** none


### PrismSplit

[App page](https://appshunter.io/ios/app/prismsplit-color-split/id6758236838)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version (One-time purchase) | $2.99 | one-time |


## Frequently asked questions

### Is Duotone Image Effect free?

Duotone Image Effect is free to download, with no in-app purchases.

### Is PrismSplit free?

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

### Do Duotone Image Effect or PrismSplit have ads?

Both Duotone Image Effect and PrismSplit show ads.

### Which is updated more often, Duotone Image Effect or PrismSplit?

Duotone Image Effect ships an update every 2 months, and PrismSplit fortnightly. Most recently, Duotone Image Effect was updated on September 19, 2026 and PrismSplit on September 19, 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.*