# Cubic vs Riff Calendar

The clearest difference is rating: Cubic at 5.0 against Riff Calendar's 4.0. Cubic also leads on iOS requirement (18.5 vs 26.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Cubic sells 2 in-app purchases, starting at $3.99 per month and Riff Calendar sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Cubic holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Cubic ships an update weekly, Riff Calendar every 5 days. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Cubic | Riff Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/cubic-second-brain-and-reader/id6758525542/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/riff-calendar/id6789502725/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 64 MB | 13 MB |
| Requires iOS | **18.5** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [ARPIT MATHUR](https://appshunter.io/developer/1873364032) | [KJELL MAGNUS REX](https://appshunter.io/developer/6789502727) |

## What reviewers say

### Cubic

[App page](https://appshunter.io/ios/app/cubic-second-brain-and-reader/id6758525542)

Transform passive reading into active learning by saving articles, organizing content, and creating reviewable flashcards from your highlights. Discover new material through RSS feeds or curated collections and track your learning progress over time.

**Highlights:** Discover content via RSS feeds and curated collections, Save articles and organize into a personal library, Add notes and highlights to saved content, Convert highlights into reviewable flashcards, Track reading habits and learning trends, Organize content for recall

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cubic Pro Monthly | $3.99 | per month |
| Cubic Pro Yearly | $14.99 | per year |


### Riff Calendar

[App page](https://appshunter.io/ios/app/riff-calendar/id6789502725)

This calendar app allows you to zoom in and out of your schedule, viewing a half-year at a glance or a single day hour-by-hour. Events can be edited directly on the calendar, and it integrates with your existing device calendars without requiring an account.

**Highlights:** Zoomable calendar views, Direct event editing, Integrated weather forecasts, Daylight shading, Works with existing calendars, Home and Lock Screen widgets

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $24.99 | per year |
| Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Cubic free?

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

### Is Riff Calendar free?

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

### Which has better reviews, Cubic or Riff Calendar?

Cubic is rated higher. Cubic averages 5.0 out of 5 from 2 ratings, while Riff Calendar averages 4.0 from 1 ratings.

### Do Cubic or Riff Calendar have ads?

Neither Cubic nor Riff Calendar shows ads.

### Which is updated more often, Cubic or Riff Calendar?

Cubic ships an update weekly, and Riff Calendar every 5 days. Most recently, Cubic was updated on October 24, 2026 and Riff Calendar on October 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*