Comparison

Calculator AM vs IOL Refocus

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Immediate result display
  • Calculation method history
  • Simple user experience
  • Typo recognition
  • Monthly subscription option
  • Yearly subscription option
Features
Read full description

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/

About

IOL Refocus

Read full description

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

Calculator AM4 screens
IOL Refocus1 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Calculator AM versus IOL Refocus: the parameters behind the verdict, then further details
ParameterCalculator AMIOL Refocus
PriceFreeFree
Rating4.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyFortnightly — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Mac — betteriPhone
Requires iOS9.0 — better16.0
Further details — not scored
Size33 MB0 MB
Age rating4+17+
DeveloperAndreas MaierPatrik Rajs

In-app purchases

3 purchases

Calculator AM

Subscriptions2
  • Monthly7 Days trial$0.491 Month
  • Yearly$2.491 Year
One-time1
  • One time purchase$4.99
None

IOL Refocus

No in-app purchases

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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