# ScopeWizard vs Holler

The clearest difference is in-app purchases: ScopeWizard at none against Holler's 1. Holler's advantage is update cadence (fortnightly vs every 25 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Holler sells 1 one-off in-app purchase. ScopeWizard asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for ScopeWizard against 5.0 for Holler. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

ScopeWizard ships an update every 25 months, Holler fortnightly. The most recent releases landed on October 30, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | ScopeWizard | Holler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/scopewizard/id1614476586/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/holler-microphone-for-sonos/id6810526797/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 25 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Richard Wright](https://appshunter.io/developer/297344959) | [Task One LLC](https://appshunter.io/developer/6809324060) |

## What reviewers say

### ScopeWizard

[App page](https://appshunter.io/ios/app/scopewizard/id1614476586)

This app simplifies telescope, eyepiece, and camera calculations with a unified database of equipment. Easily mix and match your gear or input custom values for precise specifications.

**Highlights:** Unified formula database, Equipment database, Mix and match gear, Custom value input, Telescope specifications calculation

**Features:** Vision Pro support

**In-app purchases:** none


### Holler

[App page](https://appshunter.io/ios/app/holler-microphone-for-sonos/id6810526797)

Transform your Sonos speakers into a whole-home intercom system. Broadcast live messages, record and send announcements, or play pre-made sounds across one room or many. It's designed for privacy, working locally on your Wi-Fi without accounts or tracking.

**Highlights:** Whole-home intercom for Sonos, Live microphone broadcasts, Record and send announcements, Play pre-made sounds, Selectable room grouping, Restores previous Sonos settings, Local and private operation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Holler Pro | $2.99 | one-time |


## Frequently asked questions

### Is ScopeWizard free?

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

### Is Holler free?

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

### Which has better reviews, ScopeWizard or Holler?

ScopeWizard and Holler are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do ScopeWizard or Holler have ads?

Neither ScopeWizard nor Holler shows ads.

### Which is updated more often, ScopeWizard or Holler?

ScopeWizard ships an update every 25 months, and Holler fortnightly. Most recently, ScopeWizard was updated on October 30, 2026 and Holler on October 9, 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.*