# Asthma Control T vs OptoReflex

The clearest difference is price: Asthma Control T at Free against OptoReflex's $0.99. Asthma Control T also leads on iOS requirement (15.0 vs 17.0). OptoReflex's advantage is ads (none vs shown) and update cadence (weekly vs every 3 months). On in-app purchases and device support there is nothing between them.

Asthma Control T is free to download; OptoReflex costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Asthma Control T ships an update every 3 months, OptoReflex weekly. The most recent releases landed on October 3, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Asthma Control T | OptoReflex |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Weekly** |
| Size | 144 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Gerson Rodriguez](https://appshunter.io/developer/1587778389) | [Isaias Fiuza Cabral](https://appshunter.io/developer/1896699635) |

## What reviewers say

### Asthma Control T

[App page](https://appshunter.io/ios/app/asthma-control-t/id6752399699)

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

**In-app purchases:** none


### OptoReflex

[App page](https://appshunter.io/ios/app/optoreflex-eye-tests/id6778753671)

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

**In-app purchases:** none


## Frequently asked questions

### Is Asthma Control T free?

Asthma Control T is free to download, with no in-app purchases.

### Is OptoReflex free?

OptoReflex costs $0.99, with no in-app purchases.

### Do Asthma Control T or OptoReflex have ads?

Asthma Control T shows ads; OptoReflex does not.

### Which is updated more often, Asthma Control T or OptoReflex?

Asthma Control T ships an update every 3 months, and OptoReflex weekly. Most recently, Asthma Control T was updated on October 3, 2026 and OptoReflex on October 18, 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.*