Calculator HD+ Pro vs WattTimeIsIt?
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator HD+ Pro
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.
- High precision engine
- Result displayed while typing
- Multiple undo
- Switch between workspaces
- Persistent history
- Specialized keypad
- AirPrint support
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- It is simple, easy to use and well designed - High precision engine - Result is displayed while typing the formula - Multiple undo - Switch between workspaces ! - Persistent history - Specialized keypad for iPhone and iPad - Supports bluetooth keyboard - Right or left-handed mode - Print easily with AirPrint - Share history by e-mail The PRO version has the following advantages: - more workspaces - no advertising
WattTimeIsIt?
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.
- 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
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Have a powerful (or weaker) microwave than the "norm?" Annoyed that frozen dinner packages say, "Cook for 5 minutes on high (based on a 1100W microwave)," but your microwave is 1300W or 700W? This app is for you! WattTimeIsIt? is a simple tool that will ensure that you don't under/overcook your food, given a difference in wattage. Perfectly cooked food designed for your microwave wattage, not a test kitchen's microwave. Just ask WattTimeIsIt? and you're all set! **Remember to be safe and always check the temperature of your food before eating it.**
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Calculator HD+ Pro | WattTimeIsIt? |
|---|---|---|
| Price | $3.99 | $0.99 — better |
| Rating | 4.8 (99 ratings) — better | 4.7 (3 ratings) |
| Positive reviews | 89.9% of reviews — better | 50.0% of reviews |
| Number of ratings | 99 — better | 3 |
| Update frequency | Every 3 weeks — better | Every 40 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Freemium — better | Paid |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 31 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | smalltech sarl | Visoft, Inc. |
Customer experience
Calculator HD+ Pro
WattTimeIsIt?
Bugs and requests
Calculator HD+ Pro
Reported bugs
3 issues- Calculation history not always accurate
- Music playback issues when app is opened
- Location permission request not necessary
Requested features
4 requests- Customizable decimal places
- Memory function
- Conversion tools
- Ability to sync across devices
WattTimeIsIt?
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator HD+ Pro
No in-app purchases
WattTimeIsIt?
No in-app purchases
Questions
Is Calculator HD+ Pro free?
Is WattTimeIsIt? free?
Which has better reviews, Calculator HD+ Pro or WattTimeIsIt??
Do Calculator HD+ Pro or WattTimeIsIt? have ads?
Which is updated more often, Calculator HD+ Pro or WattTimeIsIt??
Other comparisons
