# Theia OLED Viewer vs HashGrid

The clearest difference is in-app purchases: Theia OLED Viewer at none against HashGrid's 2. Theia OLED Viewer also leads on update cadence (every 3 days vs every 5 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. HashGrid sells 2 in-app purchases, starting at $2.99 per month. Theia OLED Viewer asks for nothing beyond the download.

Theia OLED Viewer ships an update every 3 days, HashGrid every 5 weeks. The most recent releases landed on October 14, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Theia OLED Viewer | HashGrid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.1 (14 ratings)](https://appshunter.io/ios/app/hashgrid/id6756027522/reviews)** |
| Number of ratings | — | **14** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 5 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 10 MB | 10 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Patrick Foley](https://appshunter.io/developer/1853473025) | [Nick Warner](https://appshunter.io/developer/1845959294) |

## What reviewers say

### Theia OLED Viewer

[App page](https://appshunter.io/ios/app/theia-oled-viewer/id6755984567)

**Features:** macOS Compatibility

**In-app purchases:** none


### HashGrid

[App page](https://appshunter.io/ios/app/hashgrid/id6756027522)

Monitor and control your cryptocurrency mining hardware in real-time. Track hashrate, power, temperature, and efficiency across your entire operation. Manage pools, update firmware, and receive smart alerts for optimal performance.

**Highlights:** Real-time hashrate, temperature, and power monitoring, Zero-configuration network discovery of miners, Smart mining and pool detection, Solo mining profitability calculator, Pool management and frequency/voltage tuning, Firmware updates and smart alerts, Customizable home screen widgets

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HashGrid Pro Monthly | $2.99 | per month |
| Premium Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Theia OLED Viewer free?

Theia OLED Viewer is free to download, with no in-app purchases.

### Is HashGrid free?

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

### Do Theia OLED Viewer or HashGrid have ads?

Neither Theia OLED Viewer nor HashGrid shows ads.

### Which is updated more often, Theia OLED Viewer or HashGrid?

Theia OLED Viewer ships an update every 3 days, and HashGrid every 5 weeks. Most recently, Theia OLED Viewer was updated on October 14, 2026 and HashGrid on October 22, 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.*