# CoreSpec 3D vs Production Calendars

The clearest difference is in-app purchases: CoreSpec 3D at none against Production Calendars's 6. Production Calendars's advantage is ads (none vs shown) and update cadence (every 6 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Production Calendars sells 6 in-app purchases, starting at $7.99 per month. CoreSpec 3D asks for nothing beyond the download.

CoreSpec 3D ships an update every 2 months, Production Calendars every 6 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | CoreSpec 3D | Production Calendars |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/production-calendars/id6760246577/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | — | Freemium |
| Size | 897 MB | 88 MB |
| Requires iOS | 18.0 | 18 |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Boom Interactive Inc](https://appshunter.io/developer/1586996756) | [Davin Nguyen](https://appshunter.io/developer/1680398335) |

## What reviewers say

### CoreSpec 3D

[App page](https://appshunter.io/ios/app/corespec-3d/id6448073665)

**In-app purchases:** none


### Production Calendars

[App page](https://appshunter.io/ios/app/production-calendars/id6760246577)

This app helps manage production schedules by tracking events, deadlines, and tasks for different departments. It facilitates real-time collaboration and integrates with other production tools to keep everything synchronized.

**Highlights:** Event and deadline scheduling, Task tracking with statuses and priorities, Real-time collaboration, Integration with Cast & Crew Lists, Departmental task views

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $7.99 | per month |
| Pro Monthly | $24.99 | per month |
| Masterbook Plus | $79.99 | per year |
| Masterbook Pro | $249.99 | per year |
| Plus Month Pass | $7.99 | one-time |
| Pro Month Pass | $24.99 | one-time |


## Frequently asked questions

### Is CoreSpec 3D free?

CoreSpec 3D is free to download, with no in-app purchases.

### Is Production Calendars free?

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

### Do CoreSpec 3D or Production Calendars have ads?

CoreSpec 3D shows ads; Production Calendars does not.

### Which is updated more often, CoreSpec 3D or Production Calendars?

CoreSpec 3D ships an update every 2 months, and Production Calendars every 6 days. Most recently, CoreSpec 3D was updated on October 25, 2026 and Production Calendars on October 31, 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.*