# Flex Calculators vs Calculator Plug

The clearest difference is update cadence: Calculator Plug at every 4 days against Flex Calculators's every 10 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Flex Calculators sells 1 one-off in-app purchase and Calculator Plug sells 4 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Flex Calculators ships an update every 10 days, Calculator Plug every 4 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Flex Calculators | Calculator Plug |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calculator-plug/id6775307587/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 37 MB | 34 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [An Le](https://appshunter.io/developer/1863975090) | [Mark Gabrielli](https://appshunter.io/developer/6775036752) |

## What reviewers say

### Flex Calculators

[App page](https://appshunter.io/ios/app/flex-calculators/id6761326502)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


### Calculator Plug

[App page](https://appshunter.io/ios/app/calculator-plug/id6775307587)

Access over 450 specialized calculators for construction, finance, health, trades, and more. This app offers a clean, offline-capable interface for quick, accurate calculations without intrusive ads.

**Highlights:** 450+ searchable calculators, Offline functionality, Clean dark interface, Construction calculators, Finance calculators, Health and fitness calculators, Trades calculators

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $5.99 | per month |
| Pro+ Monthly | $9.99 | per month |
| Pro Lifetime | $29.99 | one-time |
| Pro+ Lifetime | $44.99 | one-time |


## Frequently asked questions

### Is Flex Calculators free?

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

### Is Calculator Plug free?

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

### Do Flex Calculators or Calculator Plug have ads?

Neither Flex Calculators nor Calculator Plug shows ads.

### Which is updated more often, Flex Calculators or Calculator Plug?

Flex Calculators ships an update every 10 days, and Calculator Plug every 4 days. Most recently, Flex Calculators was updated on October 24, 2026 and Calculator Plug on October 31, 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.*