# CalcApp vs FlowClock

The clearest difference is review sentiment: FlowClock at 100% against CalcApp's 75%. CalcApp's advantage is monetization model (free vs freemium). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. CalcApp sells 2 one-off in-app purchases and FlowClock sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

CalcApp ships an update every 3 weeks, FlowClock every 2 weeks. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | CalcApp | FlowClock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (19 ratings)](https://appshunter.io/ios/app/calcapp-simple-calculator/id1211638570/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | **Free** | Freemium |
| Size | 4 MB | 42 MB |
| Requires iOS | **16.4** | 17 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [尉 张](https://appshunter.io/developer/1211638569) | [宇 刘](https://appshunter.io/developer/1551581698) |

## What reviewers say

### CalcApp

[App page](https://appshunter.io/ios/app/calcapp-simple-calculator/id1211638570)

This app combines basic arithmetic, scientific functions, programmer conversions, and unit conversions into a single, easy-to-use tool. It automatically saves all your calculations to a history log, ensuring you never lose important data.

**Highlights:** Basic Arithmetic, Scientific Calculator, Programmer Mode, Unit Converter, History Tracking

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $0.99 | one-time |
| Annual Subscription | $1.99 | one-time |


### FlowClock

[App page](https://appshunter.io/ios/app/flowclock-standby-clock/id6755359506)

Transform your device's idle screen into a dynamic art piece. Customize clock styles, colors, fonts, and animations to create a unique visual experience. Enjoy elegant and personalized displays for your desktop or bedside.

**Highlights:** Dynamic backgrounds, Customizable clock styles, Adjustable colors and fonts, Animated displays, Personalized visual experience, Screensaver functionality

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $0.99 | per month |
| Annual Plan | $1.99 | per year |
| Lifetime Access | $2.99 | one-time |


## Frequently asked questions

### Is CalcApp free?

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

### Is FlowClock free?

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

### Do CalcApp or FlowClock have ads?

Neither CalcApp nor FlowClock shows ads.

### Which is updated more often, CalcApp or FlowClock?

CalcApp ships an update every 3 weeks, and FlowClock every 2 weeks. Most recently, CalcApp was updated on October 2, 2026 and FlowClock on October 10, 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.*