# LetUsListen vs Diameter Finder

The clearest difference is price: Diameter Finder at Free against LetUsListen's $0.99. Diameter Finder also leads on in-app purchases (none vs 1) and ads (none vs shown). LetUsListen's advantage is update cadence (every 2 weeks vs every 5 months). On review sentiment, device support and iOS requirement there is nothing between them.

Diameter Finder is free to download; LetUsListen costs $0.99 up front. LetUsListen sells 1 in-app purchase, starting at $0.99 per month. Diameter Finder asks for nothing beyond the download.

LetUsListen ships an update every 2 weeks, Diameter Finder every 5 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | LetUsListen | Diameter Finder |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/diameter-finder-circle-calc/id6463205574/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 85 MB | 13 MB |
| Requires iOS | **12.0** | 12.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christian Mayr](https://appshunter.io/developer/1477487057) | [Krzysztof Gwiazda](https://appshunter.io/developer/1546740383) |

## What reviewers say

### LetUsListen

[App page](https://appshunter.io/ios/app/letuslisten/id1569907770)

This app converts text into natural-sounding speech using advanced AI. It supports multiple languages and voices, allowing you to save audio files and simulate conversations. Ideal for educational, personal, or professional use.

**Highlights:** High-quality AI-generated speech, Multiple languages and regional variations, Simulate conversations, Save audio as MP3 or M4A, Personalize voice, speed, and format, Supports text pasting from other apps

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| High-quality Text-To-Speech | $0.99 | per month |


### Diameter Finder

[App page](https://appshunter.io/ios/app/diameter-finder-circle-calc/id6463205574)

This utility app provides a straightforward way to calculate circle properties. Simply input one known value (radius, diameter, circumference, or area) to instantly get the results for the others. It's designed for quick and no-fuss calculations.

**Highlights:** Calculate radius, Calculate diameter, Calculate circumference, Calculate area, Input any single value, Quick results

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

**In-app purchases:** none


## Frequently asked questions

### Is LetUsListen free?

LetUsListen costs $0.99, and also offers in-app purchases.

### Is Diameter Finder free?

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

### Do LetUsListen or Diameter Finder have ads?

LetUsListen shows ads; Diameter Finder does not.

### Which is updated more often, LetUsListen or Diameter Finder?

LetUsListen ships an update every 2 weeks, and Diameter Finder every 5 months. Most recently, LetUsListen was updated on November 3, 2026 and Diameter Finder on November 3, 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.*