# Calculator₊ vs Hay App

The clearest difference is rating: Calculator₊ at 4.7 against Hay App's 3.7. Calculator₊ also leads on ratings volume (1.7M vs 3) and update cadence (every 3 weeks vs every 3 months). Hay App's advantage is in-app purchases (none vs 10) and ads (none vs shown). On price there is nothing between them.

Both are free to download. Calculator₊ sells 10 in-app purchases, starting at $0.99 per month. Hay App asks for nothing beyond the download.

Calculator₊ holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: Calculator₊ has 1.7M ratings behind it against 3, so its average is the more settled of the two.

Calculator₊ ships an update every 3 weeks, Hay App every 3 months. The most recent releases landed on November 7, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Calculator₊ | Hay App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.7M ratings)](https://appshunter.io/ios/app/calculator/id398129933/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/hay-app/id1063775910/reviews) |
| Number of ratings | **1.7M** | 3 |
| Positive reviews | 63.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#104** | — |
| Size | 247 MB | 69 MB |
| Requires iOS | 15.0 | **12.4** |
| Devices | **iPhone, iPad, iPod, Apple Watch, Vision Pro** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Impala Studios](https://appshunter.io/developer/1063279743) | [Harvest Tec, Inc](https://appshunter.io/developer/975695298) |

## What reviewers say

### Calculator₊

[App page](https://appshunter.io/ios/app/calculator/id398129933)

**Currently charting:** #104 Top Grossing · Utilities (US App Store)

This app offers a comprehensive suite of calculation tools, including basic, scientific, and unit conversions. It features an AI-powered math solver that can solve problems from photos and provides a dedicated space for math notes. Accessibility features ensure ease of use for all users.

**Highlights:** Basic and scientific calculations, Unit and currency converter, AI-powered math solver with photo recognition, Math notes with instant solutions, Calculation history log, Accessibility features (Dynamic Text Size, VoiceOver, High-Contrast Mode)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Member Special Offer | $0.99 | per month |
| Monthly Premium Member | $0.99 | per month |
| 1 Month Premium Access | $1.49 | per month |
| Half-Yearly Premium Member | $3.99 | per 6 months |
| Calculate Faster, AI, & No Ads | $4.99 | per 7 days |
| 1 Year Ad-Free | $5.99 | per year |
| Calculate Faster, AI, & No Ads | $5.99 | per 7 days |
| 1 Month Premium Trial | $5.99 | per 7 days |
| Math Solver/Full Access/No Ads | $5.99 | per 7 days |
| 6 Months Premium Access | $8.99 | per 6 months |

**What reviewers like**

- 💻 Useful calculator features
- 🎨 Customizable backgrounds and themes
- 📚 Helpful history tracking

**What reviewers complain about**

- 📺 Intrusive full-screen ads
- 💰 Expensive subscription model
- 🔍 Ads blocking calculator functionality

**Reported bugs**

- Incorrect calculation results for certain functions
- Inability to delete last entered digit without clearing entire calculation

**Requested features**

- Ability to delete individual calculation history entries
- More free advanced calculator features (fractions, currency, etc.)
- Improved ad placement that doesn't interfere with usage


### Hay App

[App page](https://appshunter.io/ios/app/hay-app/id1063775910)

Control your automatic hay preservative applicator directly from your iPad. Access operator manuals, repair parts, and preservative information. Monitor baling speed, moisture content, and preservative usage in real-time.

**Highlights:** iPad control for hay preservative applicators, Real-time moisture content display, Baling speed and tonnage monitoring, Preservative volume and application rate tracking, Access to operator manuals and repair parts, Bluetooth connectivity

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator₊ free?

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

### Is Hay App free?

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

### Which has better reviews, Calculator₊ or Hay App?

Calculator₊ is rated higher. Calculator₊ averages 4.7 out of 5 from 1.7M ratings, while Hay App averages 3.7 from 3 ratings.

### Do Calculator₊ or Hay App have ads?

Calculator₊ shows ads; Hay App does not.

### Which is updated more often, Calculator₊ or Hay App?

Calculator₊ ships an update every 3 weeks, and Hay App every 3 months. Most recently, Calculator₊ was updated on November 7, 2026 and Hay App on November 2, 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.*