Calculator AM vs IOL Refocus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator AM
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.
- Immediate result display
- Calculation method history
- Simple user experience
- Typo recognition
- Monthly subscription option
- Yearly subscription option
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Calculator AM is a swift calculator for the rest of us. With immediate display of the result and calculation method, and simple user experience. Calculation method. The calculation method display allows you to see everything you have typed. So that you don't forget anything and can recognize typos. Immediate result. Calculator AM allows you to see the result immediately while you are typing. There is no faster way. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
IOL Refocus
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In cataract surgery, when opting to place the intraocular lens in the ciliary sulcus rather than the capsular bag, a reduction in lens power is often necessary. This adjustment is required because, as the optic is shifted more anteriorly toward the cornea, its effective power increases. The degree of this adjustment depends on the base power of the intraocular lens, with a proportional increase in the difference as the lens power rises. This application offers a scale for calculating values within a standard range of base powers. The calculation assumes that the central corneal power falls within the normal range. \n\nThe resulting numbers are applicable for use with most modern posterior chamber intraocular lenses. The estimated effective lens position for the ciliary sulcus is 4.70 mm, while the assumed effective lens position for the capsular bag is 5.20 mm. IOL Refocus does not provide medical or treatment advice and should not be regarded as such by the user. This tool is designed to assist physicians in choosing the appropriate IOL for a specific patient. It is intended to be utilized alongside a comprehensive ophthalmic examination, as well as the requisite diagnostic tests and measurements necessary for surgery. The calculator's results are not intended to function as medical or surgical instructions, nor are they definitive. The developer cannot guarantee the accuracy of results in every case. Physicians using the tool must independently determine the appropriate treatment for their patients and bear sole responsibility for the refractive outcome. By using it, you waive any claims against IOL Refocus and authors. The calculator's information is provided without warranty, and neither developer nor individuals associated with the app are liable for damages or errors. Users are encouraged to assess the information's reliability themselves.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Calculator AM | IOL Refocus |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Fortnightly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone |
| Requires iOS | 9.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 33 MB | 0 MB |
| Age rating | 4+ | 17+ |
| Developer | Andreas Maier | Patrik Rajs |
In-app purchases
Calculator AM
- Monthly7 Days trial$0.491 Month
- Yearly$2.491 Year
- One time purchase$4.99
IOL Refocus
No in-app purchases









