# Circuits Calendar vs GridOne

The clearest difference is monetization model: Circuits Calendar at free against GridOne's freemium. GridOne's advantage is iOS requirement (15.0 vs 18.2). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Circuits Calendar sells 1 in-app purchase, starting at $4.99 per year and GridOne sells 3 in-app purchases, starting at $1.59 per month. Whichever you choose, the download price is not the number that matters.

Circuits Calendar ships an update every 2 weeks, GridOne weekly. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Circuits Calendar | GridOne |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/circuits-calendar/id6757445682/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 313 MB | 190 MB |
| Requires iOS | 18.2 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jiayi Sun](https://appshunter.io/developer/1866998205) | [Chengdu Xiyu Technology Co., Ltd](https://appshunter.io/developer/1478077078) |

## What reviewers say

### Circuits Calendar

[App page](https://appshunter.io/ios/app/circuits-calendar/id6757445682)

This app offers a minimalist Formula 1 experience, providing race calendars, simplified circuit layouts, and instant results. Stay updated with driver and team standings, and customize session notifications for practice, qualifying, or the main race.

**Highlights:** Interactive 3D circuit layouts, Customizable session notifications, Distraction-free race results, Driver and team standings, Quick session data access

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Circuits+ | $4.99 | per year |


### GridOne

[App page](https://appshunter.io/ios/app/gridone-formula-widgets/id6762984725)

Stay updated with all things Formula 1. Get race schedules, countdowns, driver and team stats, and real-time weather updates. Personalize your experience with custom notifications and widgets.

**Highlights:** Race schedules, Race countdowns, Driver and team stats, Real-time weather, Customizable widgets, Personalized notifications, Lock screen widgets

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Go+ Monthly | $1.59 | per month |
| Go+ Yearly | $9.99 | per year |
| Go+ LIfetime | $19.99 | one-time |


## Frequently asked questions

### Is Circuits Calendar free?

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

### Is GridOne free?

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

### Do Circuits Calendar or GridOne have ads?

Neither Circuits Calendar nor GridOne shows ads.

### Which is updated more often, Circuits Calendar or GridOne?

Circuits Calendar ships an update every 2 weeks, and GridOne weekly. Most recently, Circuits Calendar was updated on October 14, 2026 and GridOne on October 7, 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.*