# ChronoCalc Pro vs Voice Studio Pro

The clearest difference is price: ChronoCalc Pro at Free against Voice Studio Pro's $24.99. ChronoCalc Pro also leads on iOS requirement (16.6 vs 18.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

ChronoCalc Pro is free to download; Voice Studio Pro costs $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ChronoCalc Pro ships an update every 8 days, Voice Studio Pro every 10 days. The most recent releases landed on October 2, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | ChronoCalc Pro | Voice Studio Pro |
| --- | --- | --- |
| Price | **Free** | $24.99 |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/voice-studio-pro/id6783463649/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 10 days |
| Monetization | — | Free |
| Size | 4 MB | 6 MB |
| Requires iOS | **16.6** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [ERLEND JOHNSRUD VAAGE](https://appshunter.io/developer/1760100550) | [Birkan Aksoy](https://appshunter.io/developer/1626910993) |

## What reviewers say

### ChronoCalc Pro

[App page](https://appshunter.io/ios/app/chronocalc-pro/id6757017750)

**Features:** macOS Compatibility

**In-app purchases:** none


### Voice Studio Pro

[App page](https://appshunter.io/ios/app/voice-studio-pro/id6783463649)

Record high-quality audio on your Apple devices with professional-grade features. This free app offers lossless recording, editing tools, and background playback, all while prioritizing user privacy with on-device storage.

**Highlights:** Studio-quality lossless audio recording, Trim and save audio segments, Create custom ringtones, Background and scheduled recording, Voice activation and bookmarks, Apple Watch integration

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ChronoCalc Pro free?

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

### Is Voice Studio Pro free?

Voice Studio Pro costs $24.99, with no in-app purchases.

### Do ChronoCalc Pro or Voice Studio Pro have ads?

Neither ChronoCalc Pro nor Voice Studio Pro shows ads.

### Which is updated more often, ChronoCalc Pro or Voice Studio Pro?

ChronoCalc Pro ships an update every 8 days, and Voice Studio Pro every 10 days. Most recently, ChronoCalc Pro was updated on October 2, 2026 and Voice Studio Pro on October 18, 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.*