# Calculator ∞ vs Calculate84

The clearest difference is price: Calculate84 at Free against Calculator ∞'s $5.99. Calculate84 also leads on update cadence (fortnightly vs every 2 months) and chart position (#159 vs unranked). Calculator ∞'s advantage is ads (none vs shown) and iOS requirement (12.1 vs 18.0). On rating, review sentiment, in-app purchases and monetization model there is nothing between them.

Calculate84 is free to download; Calculator ∞ costs $5.99 up front. Calculator ∞ sells 4 in-app purchases, starting at $3.49 per month and Calculate84 sells 6 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Calculator ∞ against 4.8 for Calculate84. That said, the two scores are not equally well evidenced: Calculate84 has 53K ratings behind it against 6.3K, so its average is the more settled of the two. Written reviews split almost evenly too, at 75% and 74% positive.

Calculator ∞ ships an update every 2 months, Calculate84 fortnightly. The most recent releases landed on September 24, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Calculator ∞ | Calculate84 |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [4.7 (6.3K ratings)](https://appshunter.io/ios/app/calculator/id458535809/reviews) | **[4.8 (53K ratings)](https://appshunter.io/ios/app/calculate84/id1459712793/reviews)** |
| Number of ratings | 6.3K | **53K** |
| Positive reviews | **74.7% of reviews** | 74.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | **#159** |
| Size | 46 MB | 71 MB |
| Requires iOS | **12.1** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 12+ |
| Developer | [Incpt.Mobis](https://appshunter.io/developer/445261166) | [Century Light LLC](https://appshunter.io/developer/1459712792) |

## 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 |


### Calculate84

[App page](https://appshunter.io/ios/app/calculate84/id1459712793)

**Currently charting:** #159 Top Free · Education (US App Store)

This app offers a modern graphing calculator experience on your iPhone. It features fast, interactive touch-screen graphing, scrollable windows, and intelligent error messages for a more intuitive user experience. Designed to be a usable alternative to physical graphing calculators.

**Highlights:** Fast, interactive touch-screen graphing, Scrollable windows, Intelligent error messages, Intuitive interface, Designed for TI-84 users

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro Subscription | $2.99 | per month |
| Annual Pro Subscription | $6.99 | per year |
| Lifetime Subscription | $6.99 | one-time |
| Lifetime Subscription | $9.99 | one-time |
| Lifetime Subscription | $12.99 | one-time |
| Lifetime Pro Subscription | $29.99 | one-time |

**What reviewers like**

- 👍 Identical to TI-84 calculator
- 🚀 Seamless and intuitive user experience
- 💰 Affordable alternative to physical calculator
- 📱 Convenient to have on phone
- 🔍 Comprehensive functionality matching physical calculator

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 🔍 Missing some advanced features like regression types
- 🔒 Previous purchases removed without warning
- 💰 Subscription model can be expensive
- 📺 Intrusive ads in free version

**Reported bugs**

- Crashes when using 2-sample T/Z interval functions
- Incorrect results for inverse trig functions
- Issues with graphing parabolas and tracing points
- Regression equation not displayed correctly

**Requested features**

- Add TVM solver functionality
- Implement more regression types
- Allow disabling of ads for free users
- Restore previous purchase benefits
- Optimize for mobile experience instead of emulating physical calculator


## Frequently asked questions

### Is Calculator ∞ free?

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

### Is Calculate84 free?

Calculate84 is free to download, with in-app purchases available.

### Which has better reviews, Calculator ∞ or Calculate84?

Calculate84 is rated higher. Calculator ∞ averages 4.7 out of 5 from 6.3K ratings, while Calculate84 averages 4.8 from 53K ratings.

### Do Calculator ∞ or Calculate84 have ads?

Calculate84 shows ads; Calculator ∞ does not.

### Which is updated more often, Calculator ∞ or Calculate84?

Calculator ∞ ships an update every 2 months, and Calculate84 fortnightly. Most recently, Calculator ∞ was updated on September 24, 2026 and Calculate84 on September 27, 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.*