# Date Calculation Assistant vs Just Roll

The clearest difference is iOS requirement: Date Calculation Assistant at 15.0 against Just Roll's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Date Calculation Assistant sells 2 in-app purchases, starting at $0.99 per month and Just Roll sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Date Calculation Assistant ships an update every 5 days, Just Roll every 4 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Date Calculation Assistant | Just Roll |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/just-roll-teleprompter-camera/id6758956672/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 35 MB | 11 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [玉辉 黄](https://appshunter.io/developer/1852393919) | [On World Tech LLC](https://appshunter.io/developer/1867669833) |

## What reviewers say

### Date Calculation Assistant

[App page](https://appshunter.io/ios/app/date-calculation-assistant/id6758889725)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Yearly Subscription | $5.99 | per year |


### Just Roll

[App page](https://appshunter.io/ios/app/just-roll-teleprompter-camera/id6758956672)

This teleprompter app helps you read scripts naturally while maintaining eye contact with the camera. It offers flexible overlay and full-screen modes, customizable controls, and robust script management, all designed for a seamless recording experience.

**Highlights:** Floating script overlay, Full-screen focus mode, Magnetic snap zones, Adaptive layouts for iPad, Extensive control options, Script management with templates, Privacy-focused design

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Just Roll Pro (Monthly) | $0.99 | per month |
| Just Roll Pro (Annual) | $9.99 | per year |
| Just Roll Pro (Lifetime) | $19.99 | one-time |


## Frequently asked questions

### Is Date Calculation Assistant free?

Date Calculation Assistant is free to download, with in-app purchases available.

### Is Just Roll free?

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

### Do Date Calculation Assistant or Just Roll have ads?

Neither Date Calculation Assistant nor Just Roll shows ads.

### Which is updated more often, Date Calculation Assistant or Just Roll?

Date Calculation Assistant ships an update every 5 days, and Just Roll every 4 days. Most recently, Date Calculation Assistant was updated on October 24, 2026 and Just Roll on October 28, 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.*