# TEM Guide vs Cataract Lens

The clearest difference is update cadence: Cataract Lens at every 2 months against TEM Guide's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.

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

TEM Guide ships an update every 7 months, Cataract Lens every 2 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | TEM Guide | Cataract Lens |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 17 MB | 46 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Josh Case](https://appshunter.io/developer/1142529891) | [Chun-Huei Liu](https://appshunter.io/developer/1657411874) |

## What reviewers say

### TEM Guide

[App page](https://appshunter.io/ios/app/tem-guide/id1396817192)

This app provides a step-by-step guide for optimizing blood product selection and administration in TEM-directed transfusions. It aims to simplify and standardize the transfusion process for improved patient outcomes.

**Highlights:** Optimized blood product selection, Step-wise administration guide, Standardized transfusion process, Improved patient outcomes, Accessible transfusion guidelines

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

**In-app purchases:** none


### Cataract Lens

[App page](https://appshunter.io/ios/app/cataract-lens/id6447101876)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TEM Guide free?

TEM Guide is free to download, with no in-app purchases.

### Is Cataract Lens free?

Cataract Lens is free to download, with no in-app purchases.

### Do TEM Guide or Cataract Lens have ads?

Neither TEM Guide nor Cataract Lens shows ads.

### Which is updated more often, TEM Guide or Cataract Lens?

TEM Guide ships an update every 7 months, and Cataract Lens every 2 months. Most recently, TEM Guide was updated on November 2, 2026 and Cataract Lens on November 7, 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.*