# Standard Form Calculator vs Studdy

The clearest difference is rating: Studdy at 4.8 against Standard Form Calculator's 3.7. Studdy also leads on ads (none vs shown) and update cadence (every 10 days vs every 8 months). Standard Form Calculator's advantage is review sentiment (100% vs 89%). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Standard Form Calculator sells 1 one-off in-app purchase and Studdy sells 8 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Studdy holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: Studdy has 13K ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 100% of Standard Form Calculator's written reviews are positive against 89% of Studdy's, so the app with the better star average is not the one people write more warmly about.

Standard Form Calculator ships an update every 8 months, Studdy every 10 days. The most recent releases landed on November 3, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Standard Form Calculator | Studdy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/standard-form-calculator/id1595532933/reviews) | **[4.8 (13K ratings)](https://appshunter.io/ios/app/studdy-ai-tutor-and-math-solver/id6450114499/reviews)** |
| Number of ratings | 3 | **13K** |
| Positive reviews | **100.0% of reviews** | 89.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Every 10 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 39 MB | 64 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Asad Ahsan](https://appshunter.io/developer/1326954499) | [Studdy, LLC](https://appshunter.io/developer/1680988865) |

## What reviewers say

### Standard Form Calculator

[App page](https://appshunter.io/ios/app/standard-form-calculator/id1595532933)

Easily convert any number into its standard form, scientific notation, or engineering notation. This tool simplifies large and small numbers for better understanding and calculation. It offers accurate conversions and works both online and offline.

**Highlights:** Standard form conversion, Scientific notation, Engineering notation, Online and offline functionality, User-friendly interface, Accurate results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Form Calc Premium | $4.99 | one-time |


### Studdy

[App page](https://appshunter.io/ios/app/studdy-ai-tutor-and-math-solver/id6450114499)

This AI-powered tutor assists students with homework by providing step-by-step explanations for math and science problems. It offers personalized tutoring, video tutorials, and practice problems to help improve understanding and grades.

**Highlights:** AI-powered step-by-step problem solver, Photo scanning for homework problems, Personalized 1:1 AI tutoring, Video tutorials for complex topics, Practice problem generation, Graphing for visual understanding

**Features:** Family Sharing, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Studdy Unlimited | $1.99 | per 7 days |
| Studdy Unlimited | $1.99 | per 7 days |
| Studdy Unlimited | $6.99 | per 7 days |
| Studdy Unlimited | $6.99 | per 7 days |
| Studdy Unlimited | $9.99 | per month |
| Studdy Unlimited | $19.99 | per month |
| Studdy Unlimited | $99.99 | per year |
| Studdy Unlimited | $179.99 | per year |

**What reviewers like**

- 🚀 Helpful and accurate solutions
- 👍 Detailed step-by-step explanations
- 🤖 Powerful AI assistant
- 💡 Versatile for all subjects
- 🆓 Free to use with some limitations

**What reviewers complain about**

- 🔒 Limited free usage
- 💰 Paid version required for full access
- 🐛 Occasional inaccurate solutions
- 🔍 Camera issues with some users

**Reported bugs**

- Inconsistent performance across devices
- Freezing or crashing on certain devices

**Requested features**

- More free usage allowance
- Improved accuracy and reliability
- Enhanced user interface and navigation


## Frequently asked questions

### Is Standard Form Calculator free?

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

### Is Studdy free?

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

### Which has better reviews, Standard Form Calculator or Studdy?

Studdy is rated higher. Standard Form Calculator averages 3.7 out of 5 from 3 ratings, while Studdy averages 4.8 from 13K ratings.

### Do Standard Form Calculator or Studdy have ads?

Standard Form Calculator shows ads; Studdy does not.

### Which is updated more often, Standard Form Calculator or Studdy?

Standard Form Calculator ships an update every 8 months, and Studdy every 10 days. Most recently, Standard Form Calculator was updated on November 3, 2026 and Studdy on November 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*