# EPA 608 Test vs Optoelectronics

The clearest difference is update cadence: EPA 608 Test at every 3 weeks against Optoelectronics's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. EPA 608 Test sells 2 in-app purchases, starting at $7.99 per month and Optoelectronics sells 6 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

EPA 608 Test ships an update every 3 weeks, Optoelectronics every 3 months. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | EPA 608 Test | Optoelectronics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/epa-608-test/id6664060604/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 24 MB |
| Requires iOS | 17.2 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) |

## What reviewers say

### EPA 608 Test

[App page](https://appshunter.io/ios/app/epa-608-test/id6664060604)

Prepare for your HVAC certification exam with a comprehensive study tool. It features a large question bank, expert explanations, and personalized practice tests to help you master the material and track your progress effectively.

**Highlights:** Massive question bank, Expert explanations, Smart progress tracking, Custom practice tests, Detailed answer breakdowns

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $7.99 | per month |
| Lifetime version | $14.99 | one-time |


### Optoelectronics

[App page](https://appshunter.io/ios/app/optoelectronics/id6739937611)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $9.99 | per month |
| 6 Months | $19.99 | per 6 months |
| 1 Year | $29.99 | per year |
| 1500 | $0.99 | one-time |
| 3500 | $1.99 | one-time |
| 9000 | $3.99 | one-time |


## Frequently asked questions

### Is EPA 608 Test free?

EPA 608 Test is free to download, with in-app purchases available.

### Is Optoelectronics free?

Optoelectronics is free to download, with in-app purchases available.

### Do EPA 608 Test or Optoelectronics have ads?

Neither EPA 608 Test nor Optoelectronics shows ads.

### Which is updated more often, EPA 608 Test or Optoelectronics?

EPA 608 Test ships an update every 3 weeks, and Optoelectronics every 3 months. Most recently, EPA 608 Test was updated on November 2, 2026 and Optoelectronics on November 8, 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.*