# SDS Mobile vs FOA LossCalc

SDS Mobile and FOA LossCalc both sit at 3.6 stars, but that hides the real split: 86% of FOA LossCalc's written reviews are positive against 53% of SDS Mobile's. FOA LossCalc also leads on monetization model (free vs ad-supported) and iOS requirement (6.0 vs 15.5). SDS Mobile's advantage is update cadence (every 3 weeks vs every 2 months) and ratings volume (18 vs 4). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 3.6 for SDS Mobile against 3.5 for FOA LossCalc. Both are backed by a comparable volume of ratings — 18 and 4 respectively. Written reviews are what separate them: 53% of SDS Mobile's written reviews are positive against 86% of FOA LossCalc's.

SDS Mobile ships an update every 3 weeks, FOA LossCalc every 2 months. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | SDS Mobile | FOA LossCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (18 ratings)](https://appshunter.io/ios/app/sds-mobile/id467738315/reviews)** | [3.5 (4 ratings)](https://appshunter.io/ios/app/foa-losscalc/id476262894/reviews) |
| Number of ratings | **18** | 4 |
| Positive reviews | 53.1% of reviews | **85.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Ad-supported | **Free** |
| Size | 101 MB | 1 MB |
| Requires iOS | 15.5 | **6.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KHA, Online-MSDS](https://appshunter.io/developer/467738319) | [Miriam Hayes](https://appshunter.io/developer/415229245) |

## What reviewers say

### SDS Mobile

[App page](https://appshunter.io/ios/app/sds-mobile/id467738315)

Access an extensive database of safety data sheets (SDS) and material safety data sheets (MSDS) on your mobile device. Quickly search for products using barcode scanning, view detailed chemical information, and respond effectively during emergencies. Share SDS documents via various communication channels.

**Highlights:** Access to industry-leading SDS/MSDS database, Barcode scanning for product search, Unlimited SDS viewing and searching, "My Favorites" binder for frequently used SDS, Share SDS via fax, email, text, and social media, GHS-compliant SDS

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

**In-app purchases:** none


### FOA LossCalc

[App page](https://appshunter.io/ios/app/foa-losscalc/id476262894)

This app calculates the estimated optical loss of a fiber optic link. It helps installers verify test results and designers determine if communication equipment will function. Users can select link types, specify fiber length, and count connections/splices for accurate loss calculations.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SDS Mobile free?

SDS Mobile is free to download, with no in-app purchases.

### Is FOA LossCalc free?

FOA LossCalc is free to download, with no in-app purchases.

### Which has better reviews, SDS Mobile or FOA LossCalc?

SDS Mobile is rated higher. SDS Mobile averages 3.6 out of 5 from 18 ratings, while FOA LossCalc averages 3.5 from 4 ratings.

### Do SDS Mobile or FOA LossCalc have ads?

Neither SDS Mobile nor FOA LossCalc shows ads.

### Which is updated more often, SDS Mobile or FOA LossCalc?

SDS Mobile ships an update every 3 weeks, and FOA LossCalc every 2 months. Most recently, SDS Mobile was updated on November 6, 2026 and FOA LossCalc on November 1, 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.*