# DitherProg — Dither processing application.

> Nostalgic image dithering application with multiple algorithms and tone depths. (iPhone/iPad app by Itoh Tomoaki.)

- Source: https://appshunter.io/ios/app/ditherprog/id6444397509 (this page in markdown: same URL + `.md`)
- Developer: [Itoh Tomoaki](https://appshunter.io/developer/871816883)
- Category: Photo & Video
- Price: Free
- Rating: 3.25/5 from 4 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.4 · 1 MB
- Languages: English, Japanese
- Released: 2022-11-16
- Data updated: 2026-06-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/ditherprog/id6444397509/reviews.md

## What is DitherProg?

This is an application for nostalgic dithering.


Tone Depth:
- [ 0, 255 ]
- [ 0, 128, 255 ]
- [ 0, 64, 128, 192, 255 ]

Dithering Type：
- 2x2, Bayer
- 4x4, Bayer
- 4x4, Halftone
- 4x4, Spiral (Type 1)
- 4x4, Spiral (Type 2)
- Floyd-Steinberg
- Jarvis, Judice & Ninke

Save format:
- PNG

## Key features

- Nostalgic dithering effects
- Multiple tone depths
- Various dithering algorithms (Bayer, Floyd-Steinberg, etc.)
- Save as PNG

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/ditherprog/id6444397509/reviews.md

### 5/5 — simple, fast, lightweight

*2025-11-09*

the app works perfectly fine and I haven't faced any problems that other talk about. very good for quick dithering edits in the pocket.

### 1/5 — Crashes alot and u cant have a transparent background

*2024-11-30*

soo when u use dither 6 and 7 the game crashes and u cant use a transparent background which is pretty bad and trash

### 3/5 — Excellent but crashes predictably

*2024-11-02*

Be warned that dithering type 6 & 7 always seem to cause crashes (using iOS 18.1), otherwise it’s a nice app with a pleasantly simple interface

### 5/5 — I want to gatekeep this

*2024-10-23*

jk its so good! extremely simple and effective interface. worth it.

### 5/5 — Waw!

*2024-08-03*

Works as shown, it has so many options we can play around with and the results look so nice ! plus no ads 🌟

### 1/5 — Crashes All The Time

*2024-02-11*

Choosing dithering types crashes the app too many times, unusable.

## Frequently asked questions about DitherProg

### What dithering algorithms does DitherProg support?

DitherProg supports several dithering algorithms including 2x2 and 4x4 Bayer, 4x4 Halftone, 4x4 Spiral (Type 1 and 2), Floyd-Steinberg, and Jarvis, Judice & Ninke.

### What tone depths are available in DitherProg?

You can choose from three tone depths: [0, 255], [0, 128, 255], and [0, 64, 128, 192, 255].

### Can I save my dithered images in DitherProg?

Yes, DitherProg allows you to save your processed images in PNG format.

### What devices is DitherProg compatible with?

DitherProg is compatible with iPhones and iPads.

### What is the age rating for DitherProg?

DitherProg has an age rating of 4+, making it suitable for a wide range of users.

### How often is DitherProg updated?

The latest version, 1.0.4, was released on September 1, 2025, indicating recent development activity.

### Does DitherProg have ads?

No, DitherProg does not contain advertisements.

### What is the user rating for DitherProg?

DitherProg has an average rating of 3.3 stars based on 4 user ratings.

## Version history (last 5 releases)

### 1.0.4 — 2025-09-01

Release note (Ver.1.0.4)
- Fixed a bug that caused app to crash when selecting Dithering Type.
  - Floyd-Steinberg
  - Jarvis, Judice & Ninke

### 1.0.3 — 2024-09-02

Release note (Ver.1.0.3)
- Added: Context menu to "Copy" by long tapping image
- Added: Context menu to "Save Image" by long tapping image
- Added: Context menu to "Share" by long tapping image

### 1.0.2 — 2022-11-23

Release note (Ver.1.0.2)
- Fixed position of message displayed after sharing or saving

### 1.0.1 — 2022-11-21

Release note (Ver.2.0.1)
- Fixed: UI layout on iPad (Portrait)
- Added: UI layout on iPad (Landscape)

### 1.0.0 — 2022-11-16

No release notes.

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## More apps by Itoh Tomoaki

- [TriShoot](https://appshunter.io/ios/app/trishoot/id871816879)
- [ToyTone](https://appshunter.io/ios/app/toytone/id1016447265)
- [Chaotic](https://appshunter.io/ios/app/chaotic/id1369087152)
- [Subtilizer](https://appshunter.io/ios/app/subtilizer/id1386177976)
- [LCW-2 mono](https://appshunter.io/ios/app/lcw-2-mono/id1408272622)
- [LCW-2](https://appshunter.io/ios/app/lcw-2/id1438341642)

All apps by Itoh Tomoaki: https://appshunter.io/developer/871816883

## Related topics

[ditherprog](https://appshunter.io/ios/topics/ditherprog) · [dither](https://appshunter.io/ios/topics/dither) · [itoh tomoaki](https://appshunter.io/ios/topics/itoh-tomoaki)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-04.*