# ▸ Calculator + vs WattTimeIsIt?

The clearest difference is in-app purchases: WattTimeIsIt? at none against ▸ Calculator +'s 4. WattTimeIsIt? also leads on price ($0.99 vs $1.99). ▸ Calculator +'s advantage is update cadence (every 6 weeks vs every 40 months) and review sentiment (75% vs 50%). On rating, ads and device support there is nothing between them.

▸ Calculator + costs $1.99 and WattTimeIsIt? $0.99 up front. ▸ Calculator + sells 4 one-off in-app purchases. WattTimeIsIt? asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for ▸ Calculator + against 4.7 for WattTimeIsIt?. That said, the two scores are not equally well evidenced: ▸ Calculator + has 904 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 75% of ▸ Calculator +'s written reviews are positive against 50% of WattTimeIsIt?'s.

▸ Calculator + ships an update every 6 weeks, WattTimeIsIt? every 40 months. The most recent releases landed on October 15, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | ▸ Calculator + | WattTimeIsIt? |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | [4.7 (904 ratings)](https://appshunter.io/ios/app/calculator-plus/id473884845/reviews) | [4.7 (3 ratings)](https://appshunter.io/ios/app/watttimeisit/id652579407/reviews) |
| Number of ratings | **904** | 3 |
| Positive reviews | **75.1% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 40 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 44 MB | 2 MB |
| Requires iOS | **8.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [PPCLINK Software](https://appshunter.io/developer/833424538) | [Visoft, Inc.](https://appshunter.io/developer/652579430) |

## What reviewers say

### ▸ Calculator +

[App page](https://appshunter.io/ios/app/calculator-plus/id473884845)

This app offers a comprehensive suite of 12 calculators, including scientific, currency, unit, and finance functions. It features advanced modes, extensive formula support, and a user-friendly interface for all calculation needs.

**Highlights:** 12 specialized calculators, Over 800 formulas, Scientific, RPN, and String modes, Unit and currency conversion, Finance and date/time calculations, Equation solver and graphing, History and expression export

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Formula Toolkit | $0.99 | one-time |
| Periodic Table | $0.99 | one-time |
| UI Upgrade | $0.99 | one-time |
| Biorhythm | $0.99 | one-time |

**What reviewers like**

- 👍 Handy to use application
- 🔢 Great calculator
- 📊 Excellent for engineering & other use
- 🔢 Very useful
- 🔢 Excellent interface

**What reviewers complain about**

- 🐛 Date function does not fit iPhone screen
- 🐛 Alternate calculators no longer work
- 🐛 Good calculator but not all function work
- 🐛 Overall Good, but bugs have crept it
- 🐛 Needs an update for new phones

**Reported bugs**

- Date/Time screen cutoff at bottom and missing keyboard icon
- Currency exchange not working
- Periodic Taple option of HiCalcac pro is not compatible eith iOs 10
- Crashes in iOS 10
- Gig to meg conversion is incorrect

**Requested features**

- Dark mode option
- Advanced analytics dashboard
- Landscape mode support
- Equation solver for non-polynomials
- Auto-display of graph coordinates


### 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 + free?

▸ Calculator + costs $1.99, and also offers in-app purchases.

### Is WattTimeIsIt? free?

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

### Which has better reviews, ▸ Calculator + or WattTimeIsIt??

▸ Calculator + and WattTimeIsIt? are both rated 4.7 out of 5 on the App Store, from 904 and 3 ratings respectively.

### Do ▸ Calculator + or WattTimeIsIt? have ads?

Neither ▸ Calculator + nor WattTimeIsIt? shows ads.

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

▸ Calculator + ships an update every 6 weeks, and WattTimeIsIt? every 40 months. Most recently, ▸ Calculator + was updated on October 15, 2026 and WattTimeIsIt? on October 3, 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.*