# FlexiCalc  Editable Calculator vs SleepWarning

The clearest difference is update cadence: SleepWarning at every 4 days against FlexiCalc  Editable Calculator's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. FlexiCalc  Editable Calculator sells 3 in-app purchases, starting at $0.99 per month and SleepWarning sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

FlexiCalc  Editable Calculator ships an update every 2 weeks, SleepWarning every 4 days. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | FlexiCalc  Editable Calculator | SleepWarning |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (26 ratings)](https://appshunter.io/ios/app/flexicalc-editable-calculator/id6670525355/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | 86.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 79 MB | 7 MB |
| Requires iOS | **16.4** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [艳君 武](https://appshunter.io/developer/1766576234) | [Tilo Greiner](https://appshunter.io/developer/1740838965) |

## What reviewers say

### FlexiCalc  Editable Calculator

[App page](https://appshunter.io/ios/app/flexicalc-editable-calculator/id6670525355)

This app transforms calculations into a visual workspace, allowing you to link numbers and formulas for automatic updates. Easily compare scenarios, manage history, and utilize built-in templates for finance, travel, and more.

**Highlights:** Live linked calculations, Free-form canvas, Highlighted number labels, History management, Multi-scenario templates, Currency converter, Voice input

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Annual | $7.99 | per year |
| Lifetime | $14.99 | one-time |


### SleepWarning

[App page](https://appshunter.io/ios/app/sleepwarning/id6758070039)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SleepWarning | $1.99 | one-time |


## Frequently asked questions

### Is FlexiCalc  Editable Calculator free?

FlexiCalc  Editable Calculator is free to download, with in-app purchases available.

### Is SleepWarning free?

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

### Do FlexiCalc  Editable Calculator or SleepWarning have ads?

Neither FlexiCalc  Editable Calculator nor SleepWarning shows ads.

### Which is updated more often, FlexiCalc  Editable Calculator or SleepWarning?

FlexiCalc  Editable Calculator ships an update every 2 weeks, and SleepWarning every 4 days. Most recently, FlexiCalc  Editable Calculator was updated on November 8, 2026 and SleepWarning 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.*