# Calculator # vs ChemWhiz

The clearest difference is review sentiment: ChemWhiz at 100% against Calculator #'s 60%. ChemWhiz also leads on in-app purchases (none vs 6) and ads (none vs shown). Calculator #'s advantage is ratings volume (36K vs 7). On price, update cadence and device support there is nothing between them.

Both are free to download. Calculator # sells 6 in-app purchases, starting at $1.49 per month. ChemWhiz asks for nothing beyond the download.

ChemWhiz holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Calculator # has 36K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 60% of Calculator #'s written reviews are positive against 100% of ChemWhiz's.

Calculator # ships an update every 2 months, ChemWhiz every 6 weeks. The most recent releases landed on November 5, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Calculator # | ChemWhiz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (36K ratings)](https://appshunter.io/ios/app/calculator/id458535080/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/chemwhiz/id839352831/reviews)** |
| Number of ratings | **36K** | 7 |
| Positive reviews | 59.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 57 MB | 16 MB |
| Requires iOS | 12.1 | **9.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Incpt.Mobis](https://appshunter.io/developer/445261166) | [Anant Jain](https://appshunter.io/developer/617902493) |

## What reviewers say

### Calculator #

[App page](https://appshunter.io/ios/app/calculator/id458535080)

This multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.

**Highlights:** Math Photos Solver, Handwriting Recognition, AI Math Problem Solver, Mathematical Display, Equation Solvers, 2D Graphing, Algebraic Functions

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Upgrade 1 Month | $1.49 | per month |
| PRO Upgrade 3 Months | $2.99 | per 3 months |
| PRO + Recognition 1 Month | $4.99 | per month |
| PRO + Recognition 3 Months | $11.99 | per 3 months |
| 250 AI Recognition & Queries | $0.99 | one-time |
| 600 AI Recognition & Queries | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Powerful functionality
- 💡 Helpful for math classes
- ⭐ Great for students
- 👌 Works like a real calculator

**What reviewers complain about**

- 🔍 Confusing interface after update
- 📢 Too many intrusive ads
- 💰 Paywall for advanced features
- 🐛 Incorrect calculations
- 🔇 Loud audio ads

**Reported bugs**

- Crashes when trying to use certain functions
- Handwriting recognition not working reliably
- Inability to input negative numbers

**Requested features**

- Add option to turn off animation
- Improve ad placement to avoid obstructing usage
- Provide more transparency on paid features


### ChemWhiz

[App page](https://appshunter.io/ios/app/chemwhiz/id839352831)

This app simplifies chemistry calculations by quickly finding molar mass from chemical formulas and converting between common units. It also provides detailed information for every element in the periodic table.

**Highlights:** Calculate molar mass from chemical formulas, Convert between common chemical units, Access comprehensive periodic table data, Share calculations and element information, Today widget for clipboard calculations, Share extension for selected text calculations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator # free?

Calculator # is free to download, with in-app purchases available.

### Is ChemWhiz free?

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

### Which has better reviews, Calculator # or ChemWhiz?

ChemWhiz is rated higher. Calculator # averages 4.6 out of 5 from 36K ratings, while ChemWhiz averages 5.0 from 7 ratings.

### Do Calculator # or ChemWhiz have ads?

Calculator # shows ads; ChemWhiz does not.

### Which is updated more often, Calculator # or ChemWhiz?

Calculator # ships an update every 2 months, and ChemWhiz every 6 weeks. Most recently, Calculator # was updated on November 5, 2026 and ChemWhiz on November 1, 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.*