# Greatek HD PRO vs Estimate Maker Flex

The clearest difference is review sentiment: Estimate Maker Flex at 97% against Greatek HD PRO's 0%. Estimate Maker Flex also leads on rating (4.8 vs 3.8) and update cadence (every 8 days vs every 7 months). Greatek HD PRO's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Estimate Maker Flex sells 2 in-app purchases, starting at $5.99 per month. Greatek HD PRO asks for nothing beyond the download.

Estimate Maker Flex holds the better App Store score, 4.8 against 3.8. That said, the two scores are not equally well evidenced: Estimate Maker Flex has 101 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 0% of Greatek HD PRO's written reviews are positive against 97% of Estimate Maker Flex's.

Greatek HD PRO ships an update every 7 months, Estimate Maker Flex every 8 days. The most recent releases landed on October 21, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Greatek HD PRO | Estimate Maker Flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (4 ratings)](https://appshunter.io/ios/app/greatek-hd-pro/id1116587099/reviews) | **[4.8 (101 ratings)](https://appshunter.io/ios/app/estimate-maker-flex/id1594306406/reviews)** |
| Number of ratings | 4 | **101** |
| Positive reviews | 0.0% of reviews | **97.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 8 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 47 MB | 99 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [greatek](https://appshunter.io/developer/876317788) | [B TO J PTY LTD](https://appshunter.io/developer/569308231) |

## What reviewers say

### Greatek HD PRO

[App page](https://appshunter.io/ios/app/greatek-hd-pro/id1116587099)

This application allows remote viewing and recording of surveillance systems, including DVRs, HVRs, and IP cameras. It offers real-time image access, audio functions, and digital zoom, all within a user-friendly Portuguese interface.

**Highlights:** View up to 16 cameras simultaneously, Real-time SD and HD image viewing, Record photos and videos directly to mobile, Audio capture and playback, Digital zoom and PTZ camera control, Playback recorded footage

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers complain about**

- 👎 App is unstable and crashes
- 👎 Constant update requests without updates
- 👎 Cameras freeze or become unresponsive
- 👎 Difficult manual updates required
- 👎 Poor remote access functionality

**Reported bugs**

- App requests updates that are not available
- Cameras freeze when trying to expand
- App closes immediately after opening
- App closes when left in background
- Playback has no forward/backward functionality

**Requested features**

- Improve app stability and prevent crashes
- Fix constant update prompts for non-existent updates
- Enable smooth camera playback with forward/backward controls
- Simplify the update process to be in-app
- Ensure devices remain connected after backgrounding


### Estimate Maker Flex

[App page](https://appshunter.io/ios/app/estimate-maker-flex/id1594306406)

Create and send professional estimates quickly and easily. Convert estimates to invoices with a single tap. Customize titles, currencies, and date formats for a personalized touch. Works offline and supports multiple templates.

**Highlights:** Create and send estimates, Convert estimates to invoices, Customizable titles and subtitles, Multi-currency support, Multiple date formats, Offline functionality, Professional templates

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Subscription | $5.99 | per month |
| 1 Year Subscription | $49.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Efficient for creating estimates
- 👍 Practical and functional
- 👍 Professional-looking estimates
- 👍 Helpful for business growth

**What reviewers complain about**

- ❓ Translation not complete
- ❓ A little difficult to understand initially
- 🐛 App not opening

**Reported bugs**

- App not opening

**Requested features**

- Add option to get client signature
- Add signature of the person who made the estimate


## Frequently asked questions

### Is Greatek HD PRO free?

Greatek HD PRO is free to download, with no in-app purchases.

### Is Estimate Maker Flex free?

Estimate Maker Flex is free to download, with in-app purchases available.

### Which has better reviews, Greatek HD PRO or Estimate Maker Flex?

Estimate Maker Flex is rated higher. Greatek HD PRO averages 3.8 out of 5 from 4 ratings, while Estimate Maker Flex averages 4.8 from 101 ratings.

### Do Greatek HD PRO or Estimate Maker Flex have ads?

Neither Greatek HD PRO nor Estimate Maker Flex shows ads.

### Which is updated more often, Greatek HD PRO or Estimate Maker Flex?

Greatek HD PRO ships an update every 7 months, and Estimate Maker Flex every 8 days. Most recently, Greatek HD PRO was updated on October 21, 2026 and Estimate Maker Flex 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.*