# StutterAI vs ShelfRadar by ParallelDots

The clearest difference is update cadence: StutterAI at weekly against ShelfRadar by ParallelDots's every 6 weeks. StutterAI also leads on iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

StutterAI ships an update weekly, ShelfRadar by ParallelDots every 6 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | StutterAI | ShelfRadar by ParallelDots |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/stutterai/id6670594327/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 6 weeks |
| Monetization | Free | — |
| Size | 41 MB | 21 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Max Wolens](https://appshunter.io/developer/1766875871) | [ParallelDots, Inc.](https://appshunter.io/developer/1418510183) |

## What reviewers say

### StutterAI

[App page](https://appshunter.io/ios/app/stutterai/id6670594327)

This app utilizes the choral effect to help individuals who stutter speak more fluently. By speaking along to AI-generated voices and playback, users can experience reduced stuttering in various speaking situations.

**Highlights:** Choral effect technology, AI-generated voices, Adjustable playback speed, Use with headphones, Teleprompter functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### ShelfRadar by ParallelDots

[App page](https://appshunter.io/ios/app/shelfradar-by-paralleldots/id6748274309)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is StutterAI free?

StutterAI is free to download, with no in-app purchases.

### Is ShelfRadar by ParallelDots free?

ShelfRadar by ParallelDots is free to download, with no in-app purchases.

### Do StutterAI or ShelfRadar by ParallelDots have ads?

Neither StutterAI nor ShelfRadar by ParallelDots shows ads.

### Which is updated more often, StutterAI or ShelfRadar by ParallelDots?

StutterAI ships an update weekly, and ShelfRadar by ParallelDots every 6 weeks. Most recently, StutterAI was updated on October 24, 2026 and ShelfRadar by ParallelDots on October 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.*