# Calculator AM vs IOL Refocus

The clearest difference is in-app purchases: IOL Refocus at none against Calculator AM's 3. Calculator AM's advantage is update cadence (fortnightly vs every 4 months) and device support (4 vs 1). On price and ads there is nothing between them.

Both are free to download. Calculator AM sells 3 in-app purchases, starting at $0.49 per month. IOL Refocus asks for nothing beyond the download.

Calculator AM ships an update fortnightly, IOL Refocus every 4 months. The most recent releases landed on October 21, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Calculator AM | IOL Refocus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/calculator-am/id1511163593/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 0 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Andreas Maier](https://appshunter.io/developer/454364359) | [Patrik Rajs](https://appshunter.io/developer/1709791630) |

## What reviewers say

### Calculator AM

[App page](https://appshunter.io/ios/app/calculator-am/id1511163593)

This calculator app provides an immediate display of results and calculation methods as you type. Its simple user experience helps you avoid errors and quickly see your work. It offers a free version with optional subscriptions for enhanced features.

**Highlights:** Immediate result display, Calculation method history, Simple user experience, Typo recognition, Monthly subscription option, Yearly subscription option

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.49 | per month |
| Yearly | $2.49 | per year |
| One time purchase | $4.99 | one-time |


### IOL Refocus

[App page](https://appshunter.io/ios/app/iol-refocus/id6476325514)

**In-app purchases:** none


## Frequently asked questions

### Is Calculator AM free?

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

### Is IOL Refocus free?

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

### Do Calculator AM or IOL Refocus have ads?

Neither Calculator AM nor IOL Refocus shows ads.

### Which is updated more often, Calculator AM or IOL Refocus?

Calculator AM ships an update fortnightly, and IOL Refocus every 4 months. Most recently, Calculator AM was updated on October 21, 2026 and IOL Refocus on October 13, 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.*