# FOA LossCalc

> Estimates optical loss for fiber optic links based on user-defined parameters. (iPhone/iPad app by Miriam Hayes.)

- Source: https://appshunter.io/ios/app/foa-losscalc/id476262894 (this page in markdown: same URL + `.md`)
- Developer: [Miriam Hayes](https://appshunter.io/developer/415229245)
- Category: Reference, Utilities
- Price: Free
- Rating: 4.30/5 from 3 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 6.0 · 1 MB
- Languages: American English
- Released: 2011-11-02
- Data updated: 2026-06-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/foa-losscalc/id476262894/reviews.md

## What is FOA LossCalc?

FOA LossCalc estimates the optical loss of a fiber optic link. This will save time for the installer of a fiber optic link needing to know whether test results are reasonable and/or make a "pass/fail" determination. It can also help the designer of a link to determine if communications equipment will operate over this link. 
By choosing the type of link (singlemode or multimode) and specifying the length of the fiber and numbers of connections and splices, it will calculate the end to end loss of the link. The app has default specifications for singlemode and multimode links or the user may create custom setups with specifications appropriate for any application.

## Key features

- Estimates optical loss for fiber optic links
- Supports singlemode and multimode links
- User-defined custom setups
- Calculates end-to-end loss
- Helps determine pass/fail for test results

## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/foa-losscalc/id476262894/reviews.md

### 5/5 — Excellent app

*2014-01-22*

Great quick calculator for loss budgets when designing optical networks. Used daily!

### 4/5 — Kft/miles/etc

*2013-02-24*

Great app, but I usually shoot fibers in kilofeet & then use the app to check my loss. Would love to see kft & miles added to the options. Still worth the price, though. ;)

### 5/5 — Works great

*2012-12-14*

Does what I need it to do. Thx. Hope your day is full of 0.0's

### 3/5 — Not bad needs more options for wavelength and attenuation

*2012-08-08, version 1.0.2*

This application isn't bad but it would be good to be able to test or setup other wavelengths for example 1625 which is a wavelength we use at work it would also be nice to be able to adjust formula if testing more complex networks eg PON

### 4/5 — Great App!

*2011-12-20*

This app is great overall for calculating budgets on the fly. It would be nice to be able to change from Km to feet in the set-up menu though....

### 5/5 — Custom edit function is great!

*2011-12-05*

This is great for those who don't do math.

I like this app because of the "Typ" (Typical) and Custom edit functionality. Also, go advanced, by understanding your connector type limits.

-Kevin J

### 4/5 — Worth having

*2011-11-26, version 1.0*

This a nice basic app with the appropriate formulas to calculate whether a fibre path is within spec. Now and then I'll splice a path with a fibre mismatch where I can't get a good splice loss. I use this app to check if the path as a whole is in spec despite a single splice having a high loss. Just nice to have to easily calculate when needed

## Frequently asked questions about FOA LossCalc

### What is FOA LossCalc used for?

FOA LossCalc estimates the optical loss of a fiber optic link. This helps installers determine if test results are reasonable and assists designers in verifying if communication equipment will operate over the link.

### How does FOA LossCalc calculate optical loss?

Users select the link type (singlemode or multimode), specify the fiber length, and input the number of connections and splices. The app then calculates the end-to-end loss of the link based on these parameters.

### Can FOA LossCalc be used for custom fiber optic link setups?

Yes, the app provides default specifications for singlemode and multimode links, but users can also create custom setups with their own specifications to match any application.

### What devices does FOA LossCalc support?

FOA LossCalc is supported on iPhone and iPod devices.

### What is the age rating for FOA LossCalc?

FOA LossCalc has an age rating of 4+, making it suitable for a wide range of users.

### When was FOA LossCalc last updated?

The latest version of FOA LossCalc was released on December 8, 2015.

### Does FOA LossCalc have ads?

No, FOA LossCalc does not contain advertisements.

### What is the user rating for FOA LossCalc?

FOA LossCalc has an average rating of 4.3 stars based on 3 user ratings.

## Version history (last 4 releases)

### 1.1 — 2015-12-08

This app has been updated by Apple to display the Apple Watch app icon.

- Updated for iOS 9 compatibility.

### 1.0.2 — 2012-01-08

- Fixed 'Multi'

### 1.0.1 — 2011-12-18

- Fixed bug in saving reports.

### 1.0 — 2011-11-02

No release notes.

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## Related topics

[foa losscalc](https://appshunter.io/ios/topics/foa-losscalc) · [miriam hayes](https://appshunter.io/ios/topics/miriam-hayes) · [foa](https://appshunter.io/ios/topics/foa) · [wavelengthenergycalc](https://appshunter.io/ios/topics/wavelengthenergycalc)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*