# Shift-Reduce Parser

> Shift-Reduce Parser (iPhone/iPad app by Logan Reid.)

- Source: https://appshunter.io/ios/app/shift-reduce-parser/id6447081475 (this page in markdown: same URL + `.md`)
- Developer: [Logan Reid](https://appshunter.io/developer/1680265768)
- Category: Developer Tools
- Price: Free
- Age rating: 4+
- Requires: iOS 11.0 · 27 MB
- Languages: English
- Released: 2023-04-03
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/shift-reduce-parser/id6447081475/reviews.md

## What is Shift?

This app is a dynamic shift-reduce parser that visualizes all the components that are required to generate a parse table as well as the parsing process. This shift-reduce parser currently only works with LR(0) grammar.

The "help" section of the app provides more details and info on shift-reduce parsing. Furthermore, the "help" section also provides example grammar to get you started.

This app was built and adapted from my open-source shift-reduce parser application, which can be found at https://github.com/ShadowLogan31/Shift-Reduce-Parser


## Version history (last 2 releases)

### 1.0.1 — 2023-05-23

Fixed a bug where using a grammar example did not immediately update the Grammar list.

### 1.0 — 2023-04-03

No release notes.

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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 2026-05-19.*