# Calculator ∞ vs CALC Prime

The clearest difference is in-app purchases: CALC Prime at none against Calculator ∞'s 4. Calculator ∞'s advantage is rating (4.7 vs 4.3) and ratings volume (6.3K vs 4). On review sentiment, update cadence, ads and device support there is nothing between them.

Calculator ∞ costs $5.99 and CALC Prime $8.99 up front. Calculator ∞ sells 4 in-app purchases, starting at $3.49 per month. CALC Prime asks for nothing beyond the download.

Calculator ∞ holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Calculator ∞ has 6.3K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 75% of Calculator ∞'s written reviews are positive against 74% of CALC Prime's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 14, 2026 and August 28, 2026 respectively.

## The numbers

| Metric | Calculator ∞ | CALC Prime |
| --- | --- | --- |
| Price | **$5.99** | $8.99 |
| Rating | **[4.7 (6.3K ratings)](https://appshunter.io/ios/app/calculator/id458535809/reviews)** | [4.3 (4 ratings)](https://appshunter.io/ios/app/calc-prime/id842563364/reviews) |
| Number of ratings | **6.3K** | 4 |
| Positive reviews | **74.7% of reviews** | 73.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 46 MB | 9 MB |
| Requires iOS | **12.1** | 15.5 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Incpt.Mobis](https://appshunter.io/developer/445261166) | [QApps LLC](https://appshunter.io/developer/395652397) |

## What reviewers say

### Calculator ∞

[App page](https://appshunter.io/ios/app/calculator/id458535809)

This advanced calculator app offers a powerful math core and algebra engine for basic to complex calculations. It includes features like step-by-step solutions, handwriting recognition, and 2D graphing, making it suitable for students, engineers, and programmers.

**Highlights:** Step-by-step solution hints, Math Photos Solver, Handwriting Recognition, AI Math Problem Solver, 2D Graphing, Unit Converter, Matrix/Vector Mode

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited OCR/Writing 1 Month | $3.49 | per month |
| Unlimited OCR/Writing 3 Months | $8.99 | per 3 months |
| 400 AI Recognition & Queries | $0.99 | one-time |
| 900 AI Recognition & Queries | $1.99 | one-time |


### CALC Prime

[App page](https://appshunter.io/ios/app/calc-prime/id842563364)

This advanced scientific calculator is designed for professionals and students, offering a wide range of functions, live conversions, and graphing capabilities. It features a history log, customizable themes, and easy expression editing, making complex calculations intuitive and visually appealing.

**Highlights:** Advanced scientific calculation, Smart Basic Graphing, Live currency and custom conversions, History log with aggregate functions, Customizable themes and layout, Native watchOS app and custom keyboard

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Calculator ∞ free?

Calculator ∞ costs $5.99, and also offers in-app purchases.

### Is CALC Prime free?

CALC Prime costs $8.99, with no in-app purchases.

### Which has better reviews, Calculator ∞ or CALC Prime?

Calculator ∞ is rated higher. Calculator ∞ averages 4.7 out of 5 from 6.3K ratings, while CALC Prime averages 4.3 from 4 ratings.

### Do Calculator ∞ or CALC Prime have ads?

Neither Calculator ∞ nor CALC Prime shows ads.

### Which is updated more often, Calculator ∞ or CALC Prime?

Calculator ∞ ships an update every 2 months, and CALC Prime every 2 months. Most recently, Calculator ∞ was updated on October 14, 2026 and CALC Prime on August 28, 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.*