# HashWatcher vs SciCalc

The clearest difference is ads: HashWatcher at none against SciCalc's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. HashWatcher sells 3 in-app purchases, starting at $2.99 per month and SciCalc sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

HashWatcher ships an update every 5 days, SciCalc weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | HashWatcher | SciCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (491 ratings)](https://appshunter.io/ios/app/hashwatcher-mining-dashboard/id6753040236/reviews)** | — |
| Number of ratings | **491** | — |
| Positive reviews | 87.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Freemium | — |
| Size | 215 MB | 12 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Engineered Essentials Ventures, LLC](https://appshunter.io/developer/1666420484) | [Matthew Wong](https://appshunter.io/developer/6774040057) |

## What reviewers say

### HashWatcher

[App page](https://appshunter.io/ios/app/hashwatcher-mining-dashboard/id6753040236)

Monitor and control your Bitcoin mining hardware fleet from a single, intuitive interface. Optimize performance, track key metrics, and receive alerts for your mining operations. Integrates with solar power systems for smarter energy management.

**Highlights:** Fleet monitoring dashboard, Real-time hashrate, power, temp tracking, Miner controls (overclocking, modes), Solar power integration, Remote monitoring via Hub/Gateway, Alerts for temperature, anomalies, etc., iOS widgets and Apple Watch support

**Features:** iMessage stickers, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Yearly | $19.99 | per year |
| Lifetime Premium | $39.99 | one-time |


### SciCalc

[App page](https://appshunter.io/ios/app/scicalc-graphing-calculator/id6774040055)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SciCalc Pro Monthly | $1.99 | per month |
| SciCalc Pro Annual | $9.99 | per year |


## Frequently asked questions

### Is HashWatcher free?

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

### Is SciCalc free?

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

### Do HashWatcher or SciCalc have ads?

SciCalc shows ads; HashWatcher does not.

### Which is updated more often, HashWatcher or SciCalc?

HashWatcher ships an update every 5 days, and SciCalc weekly. Most recently, HashWatcher was updated on October 30, 2026 and SciCalc on October 31, 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.*