# SunForecast vs Binary Clock

The clearest difference is update cadence: Binary Clock at daily against SunForecast's every 5 days. SunForecast's advantage is device support (4 vs 2) and iOS requirement (16.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. SunForecast sells 2 in-app purchases, starting at $1.99 per month and Binary Clock sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

SunForecast ships an update every 5 days, Binary Clock daily. The most recent releases landed on September 29, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | SunForecast | Binary Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/sunforecast/id6745263927/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 106 MB | 7 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | **iPhone, iPad, Apple Watch, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Maxime Pontoire](https://appshunter.io/developer/525396222) | [Super, Inc.](https://appshunter.io/developer/439129974) |

## What reviewers say

### SunForecast

[App page](https://appshunter.io/ios/app/sunforecast/id6745263927)

Predicts the quality of sunrises and sunsets based on weather and atmospheric data. Offers customizable notifications, photography tips, and multi-location support for capturing the best sky moments.

**Highlights:** Sunrise/sunset quality predictions, Customizable notifications, Multi-location support, Home screen widget, Photography tips, Adaptive interface

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $14.99 | per year |


### Binary Clock

[App page](https://appshunter.io/ios/app/binary-clock-standby/id6786876264)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Binary Clock Pro | $2.99 | one-time |


## Frequently asked questions

### Is SunForecast free?

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

### Is Binary Clock free?

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

### Do SunForecast or Binary Clock have ads?

Neither SunForecast nor Binary Clock shows ads.

### Which is updated more often, SunForecast or Binary Clock?

SunForecast ships an update every 5 days, and Binary Clock daily. Most recently, SunForecast was updated on September 29, 2026 and Binary Clock on September 20, 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.*