# BillSubmit vs Sol Clock

The clearest difference is in-app purchases: BillSubmit at none against Sol Clock's 2. BillSubmit also leads on iOS requirement (15.1 vs 26.0). Sol Clock's advantage is update cadence (every 11 days vs every 22 months). On price, ads and device support there is nothing between them.

Both are free to download. Sol Clock sells 2 in-app purchases, starting at $0.99 per month. BillSubmit asks for nothing beyond the download.

BillSubmit ships an update every 22 months, Sol Clock every 11 days. The most recent releases landed on October 30, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | BillSubmit | Sol Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 11 days** |
| Size | 23 MB | 8 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aman Jakhar](https://appshunter.io/developer/1713311988) | [Mark Zigadlo](https://appshunter.io/developer/1879779038) |

## What reviewers say

### BillSubmit

[App page](https://appshunter.io/ios/app/billsubmit/id6470272897)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sol Clock

[App page](https://appshunter.io/ios/app/sol-clock-sun-and-moon-tracker/id6770347619)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Annual | $7.99 | per year |


## Frequently asked questions

### Is BillSubmit free?

BillSubmit is free to download, with no in-app purchases.

### Is Sol Clock free?

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

### Do BillSubmit or Sol Clock have ads?

Neither BillSubmit nor Sol Clock shows ads.

### Which is updated more often, BillSubmit or Sol Clock?

BillSubmit ships an update every 22 months, and Sol Clock every 11 days. Most recently, BillSubmit was updated on October 30, 2026 and Sol Clock on November 9, 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.*