# Calculator HD+ Pro vs WattTimeIsIt?

Calculator HD+ Pro and WattTimeIsIt? both sit at 4.8 stars, but that hides the real split: 90% of Calculator HD+ Pro's written reviews are positive against 50% of WattTimeIsIt?'s. Calculator HD+ Pro also leads on update cadence (every 3 weeks vs every 40 months) and ratings volume (99 vs 3). WattTimeIsIt?'s advantage is price ($0.99 vs $3.99). On rating, ads, in-app purchases and device support there is nothing between them.

Calculator HD+ Pro costs $3.99 and WattTimeIsIt? $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.8 for Calculator HD+ Pro against 4.7 for WattTimeIsIt?. That said, the two scores are not equally well evidenced: Calculator HD+ Pro has 99 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 90% of Calculator HD+ Pro's written reviews are positive against 50% of WattTimeIsIt?'s.

Calculator HD+ Pro ships an update every 3 weeks, WattTimeIsIt? every 40 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Calculator HD+ Pro | WattTimeIsIt? |
| --- | --- | --- |
| Price | $3.99 | **$0.99** |
| Rating | **[4.8 (99 ratings)](https://appshunter.io/ios/app/calculator-hd-plus-pro/id465810912/reviews)** | [4.7 (3 ratings)](https://appshunter.io/ios/app/watttimeisit/id652579407/reviews) |
| Number of ratings | **99** | 3 |
| Positive reviews | **89.9% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 40 months |
| Monetization | **Freemium** | Paid |
| Size | 31 MB | 2 MB |
| Requires iOS | **10.0** | 14.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [smalltech sarl](https://appshunter.io/developer/289934568) | [Visoft, Inc.](https://appshunter.io/developer/652579430) |

## What reviewers say

### Calculator HD+ Pro

[App page](https://appshunter.io/ios/app/calculator-hd-plus-pro/id465810912)

This app offers a high-precision calculation engine with a user-friendly interface. It allows for real-time formula display, multiple undo options, and workspace switching. Advanced features include persistent history, specialized keypads, and AirPrint compatibility.

**Highlights:** High precision engine, Result displayed while typing, Multiple undo, Switch between workspaces, Persistent history, Specialized keypad, AirPrint support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Intuitive and easy to use
- 🚀 Efficient and fast calculations
- 💡 Helpful calculation history and workspaces
- 🎨 Sleek and modern design
- 🔒 Reliable and stable performance

**What reviewers complain about**

- 🐛 Occasional bugs and glitches
- 🔊 Annoying key press sound
- 📱 Needs better optimization for larger screens
- 💰 Paid version not significantly different from free

**Reported bugs**

- Calculation history not always accurate
- Music playback issues when app is opened
- Location permission request not necessary

**Requested features**

- Customizable decimal places
- Memory function
- Conversion tools
- Ability to sync across devices


### WattTimeIsIt?

[App page](https://appshunter.io/ios/app/watttimeisit/id652579407)

Easily adjust cooking times for frozen meals based on your microwave's wattage. Avoid under or overcooking your food by converting standard instructions to match your specific appliance.

**Highlights:** Adjust cooking times for wattage differences, Prevent under/overcooking food, Works with various microwave wattages, Ensures perfectly cooked meals, Simple and easy to use tool

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculator HD+ Pro free?

Calculator HD+ Pro costs $3.99, with no in-app purchases.

### Is WattTimeIsIt? free?

WattTimeIsIt? costs $0.99, with no in-app purchases.

### Which has better reviews, Calculator HD+ Pro or WattTimeIsIt??

Calculator HD+ Pro is rated higher. Calculator HD+ Pro averages 4.8 out of 5 from 99 ratings, while WattTimeIsIt? averages 4.7 from 3 ratings.

### Do Calculator HD+ Pro or WattTimeIsIt? have ads?

Neither Calculator HD+ Pro nor WattTimeIsIt? shows ads.

### Which is updated more often, Calculator HD+ Pro or WattTimeIsIt??

Calculator HD+ Pro ships an update every 3 weeks, and WattTimeIsIt? every 40 months. Most recently, Calculator HD+ Pro was updated on October 26, 2026 and WattTimeIsIt? on October 24, 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.*