# ProjectorCalc vs SpectraMania

The clearest difference is rating: ProjectorCalc at 5.0 against SpectraMania's 4.0. ProjectorCalc also leads on price ($2.99 vs $7.99) and iOS requirement (9.2 vs 16.0). SpectraMania's advantage is review sentiment (75% vs 38%) and update cadence (every 6 months vs every 49 months). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

ProjectorCalc costs $2.99 and SpectraMania $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ProjectorCalc holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews complicate that: 38% of ProjectorCalc's written reviews are positive against 75% of SpectraMania's, so the app with the better star average is not the one people write more warmly about.

ProjectorCalc ships an update every 49 months, SpectraMania every 6 months. The most recent releases landed on October 7, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | ProjectorCalc | SpectraMania |
| --- | --- | --- |
| Price | **$2.99** | $7.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/projectorcalc/id310342928/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/spectramania/id6745442371/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | 37.5% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 49 months | **Every 6 months** |
| Monetization | Paid | Paid |
| Size | 10 MB | 13 MB |
| Requires iOS | **9.2** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [D!HV Lighting](https://appshunter.io/developer/287079053) | [Sergey Andrzheevskiy](https://appshunter.io/developer/1812266595) |

## What reviewers say

### ProjectorCalc

[App page](https://appshunter.io/ios/app/projectorcalc/id310342928)

This utility app helps lighting technicians and projectionists calculate projected image dimensions. It determines image width, height, diagonal length, brightness, area, and pixel density based on projector and location details. It also estimates keystone distortion.

**Highlights:** Calculate image width, height, and diagonal length, Determine brightness in Nits, Calculate total projected area, Compute pixels per inch, Estimate keystone distortion

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

**In-app purchases:** none


### SpectraMania

[App page](https://appshunter.io/ios/app/spectramania/id6745442371)

This application offers high-resolution, real-time 3D spectrum analysis of audio signals. It allows for precise measurements, playback from specific points, and saving audio recordings. Users can customize analysis parameters and interact with various display views.

**Highlights:** High-resolution 3D spectrum analysis, Precise pause mode measurement, Audio playback from cursor, Save audio as WAV, Configurable analysis parameters, Portrait and Landscape support, Interactive touch gestures

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

**In-app purchases:** none


## Frequently asked questions

### Is ProjectorCalc free?

ProjectorCalc costs $2.99, with no in-app purchases.

### Is SpectraMania free?

SpectraMania costs $7.99, with no in-app purchases.

### Which has better reviews, ProjectorCalc or SpectraMania?

ProjectorCalc is rated higher. ProjectorCalc averages 5.0 out of 5 from 2 ratings, while SpectraMania averages 4.0 from 4 ratings.

### Do ProjectorCalc or SpectraMania have ads?

Neither ProjectorCalc nor SpectraMania shows ads.

### Which is updated more often, ProjectorCalc or SpectraMania?

ProjectorCalc ships an update every 49 months, and SpectraMania every 6 months. Most recently, ProjectorCalc was updated on October 7, 2026 and SpectraMania on October 17, 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.*