# Calculator Max vs Discount Calculator SDG

The clearest difference is rating: Discount Calculator SDG at 5.0 against Calculator Max's 4.3. Discount Calculator SDG also leads on in-app purchases (none vs 2) and iOS requirement (12.0 vs 15.0). Calculator Max's advantage is ads (none vs shown) and update cadence (every 2 months vs every 13 months). On price and device support there is nothing between them.

Both are free to download. Calculator Max sells 2 in-app purchases, starting at $4.99 per year. Discount Calculator SDG asks for nothing beyond the download.

Discount Calculator SDG holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Calculator Max has 1.9K ratings behind it against 7, so its average is the more settled of the two.

Calculator Max ships an update every 2 months, Discount Calculator SDG every 13 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Calculator Max | Discount Calculator SDG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (1.9K ratings)](https://appshunter.io/ios/app/calculator-max/id364905554/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/discount-calculator-sdg/id1343251533/reviews)** |
| Number of ratings | **1.9K** | 7 |
| Positive reviews | 55.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 13 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 126 MB | 13 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pavel Kozarek](https://appshunter.io/developer/303215376) | [SDG CODE DOO NIS](https://appshunter.io/developer/1343251532) |

## What reviewers say

### Calculator Max

[App page](https://appshunter.io/ios/app/calculator-max/id364905554)

This app offers a comprehensive suite of calculation tools, from basic arithmetic to advanced scientific functions. It features a history tape for easy access and reuse of entries, and a unique scribble pad for handwritten notes and equation solving on iPads. Enjoy a clean interface, multitasking support, and customizable themes.

**Highlights:** Basic and scientific calculators, History tape with export options, Handwritten notes and equation solving, Multitasking support on iPad, Customizable themes and app icons, Home Screen and Lock Screen widgets

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator Max Pro | $4.99 | per year |
| Calculator Max Pro | $3.99 | one-time |

**What reviewers like**

- 🚀 Easy to use
- 📝 Useful note-taking feature
- 💾 Tape/history feature
- 👍 Clean and intuitive interface
- 🎨 Customizable appearance

**What reviewers complain about**

- 🐛 Compatibility issues with newer iOS versions
- 📤 Lack of export/sharing options for tape/history
- 🔍 Difficulty finding settings
- 🔀 Sensitive orientation switching

**Reported bugs**

- Crashes after iOS 26 update
- Tape not visible/functional on iPhone
- Calculator buttons/layout issues in split-screen mode

**Requested features**

- Left-handed mode
- Backspace/edit functionality
- Scientific calculator mode with tape
- Tape annotation/labeling
- Cloud/Dropbox sync for tape


### Discount Calculator SDG

[App page](https://appshunter.io/ios/app/discount-calculator-sdg/id1343251533)

This utility app quickly calculates the final price of an item after a discount and shows how much money you've saved. Its real-time results and flexible design make it easy and fast to use on any device.

**Highlights:** Real-time discount calculation, Shows amount saved, Flexible design, Easy and quick to use, Works on all devices

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator Max free?

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

### Is Discount Calculator SDG free?

Discount Calculator SDG is free to download, with no in-app purchases.

### Which has better reviews, Calculator Max or Discount Calculator SDG?

Discount Calculator SDG is rated higher. Calculator Max averages 4.3 out of 5 from 1.9K ratings, while Discount Calculator SDG averages 5.0 from 7 ratings.

### Do Calculator Max or Discount Calculator SDG have ads?

Discount Calculator SDG shows ads; Calculator Max does not.

### Which is updated more often, Calculator Max or Discount Calculator SDG?

Calculator Max ships an update every 2 months, and Discount Calculator SDG every 13 months. Most recently, Calculator Max was updated on November 6, 2026 and Discount Calculator SDG 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.*