# iSaveWeb Pro HD vs MasterTherm

The clearest difference is price: MasterTherm at Free against iSaveWeb Pro HD's $4.99. MasterTherm also leads on rating (5.0 vs 2.5) and review sentiment (50% vs 24%). iSaveWeb Pro HD's advantage is update cadence (every 3 months vs every 9 months) and iOS requirement (12.0 vs 15.0). On ratings volume, ads and in-app purchases there is nothing between them.

MasterTherm is free to download; iSaveWeb Pro HD costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MasterTherm holds the better App Store score, 5.0 against 2.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 24% of iSaveWeb Pro HD's written reviews are positive against 50% of MasterTherm's.

iSaveWeb Pro HD ships an update every 3 months, MasterTherm every 9 months. The most recent releases landed on October 23, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | iSaveWeb Pro HD | MasterTherm |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [2.5 (2 ratings)](https://appshunter.io/ios/app/isaveweb-pro-hd/id397893037/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mastertherm/id622404273/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 24.4% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 9 months |
| Monetization | Paid | **Free** |
| Size | 14 MB | 15 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [MaximumSoft Corp.](https://appshunter.io/developer/305594533) | [Neoware s.r.o.](https://appshunter.io/developer/622404276) |

## What reviewers say

### iSaveWeb Pro HD

[App page](https://appshunter.io/ios/app/isaveweb-pro-hd/id397893037)

Save favorite websites to your device for offline browsing. Store entire pages with images, JavaScript, and CSS. Access saved content without an internet connection, even for sites requiring login.

**Highlights:** Save websites for offline browsing, Store pages with images, JS, and CSS, Access sites requiring login, Save from built-in browser or Safari, Transfer saved pages to other devices/cloud, Upload files from desktop/cloud

**Features:** macOS Compatibility

**In-app purchases:** none


### MasterTherm

[App page](https://appshunter.io/ios/app/mastertherm/id622404273)

Remotely monitor and control your MasterTherm heat pump from your iPhone or iPad. Adjust operating modes, set temperatures, manage heating circuits, and even view weather forecasts for your location.

**Highlights:** Remote heat pump status monitoring, Control operation mode and temperature, Setup weather compensation, On/Off switching, Monitor heating circuits, View weather forecast

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iSaveWeb Pro HD free?

iSaveWeb Pro HD costs $4.99, with no in-app purchases.

### Is MasterTherm free?

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

### Which has better reviews, iSaveWeb Pro HD or MasterTherm?

MasterTherm is rated higher. iSaveWeb Pro HD averages 2.5 out of 5 from 2 ratings, while MasterTherm averages 5.0 from 1 ratings.

### Do iSaveWeb Pro HD or MasterTherm have ads?

Neither iSaveWeb Pro HD nor MasterTherm shows ads.

### Which is updated more often, iSaveWeb Pro HD or MasterTherm?

iSaveWeb Pro HD ships an update every 3 months, and MasterTherm every 9 months. Most recently, iSaveWeb Pro HD was updated on October 23, 2026 and MasterTherm on October 15, 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.*