# DayCalc Pro vs Calctan

DayCalc Pro and Calctan both sit at 4.6 stars, but that hides the real split: 86% of DayCalc Pro's written reviews are positive against 29% of Calctan's. DayCalc Pro also leads on ads (none vs shown) and update cadence (every 6 weeks vs every 3 months). Calctan's advantage is price (Free vs $0.99). On rating, ratings volume, in-app purchases and monetization model there is nothing between them.

Calctan is free to download; DayCalc Pro costs $0.99 up front. DayCalc Pro sells 9 one-off in-app purchases and Calctan sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for DayCalc Pro against 4.5 for Calctan. Both are backed by a comparable volume of ratings — 176 and 61 respectively. Written reviews are what separate them: 86% of DayCalc Pro's written reviews are positive against 29% of Calctan's.

DayCalc Pro ships an update every 6 weeks, Calctan every 3 months. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | DayCalc Pro | Calctan |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.6 (176 ratings)](https://appshunter.io/ios/app/daycalc-pro-note-calculator/id654444242/reviews)** | [4.5 (61 ratings)](https://appshunter.io/ios/app/calctan/id1445480535/reviews) |
| Number of ratings | **176** | 61 |
| Positive reviews | **85.6% of reviews** | 28.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 99 MB | 11 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [良峰 侯](https://appshunter.io/developer/654444245) | [Jorge Lozada](https://appshunter.io/developer/421852863) |

## What reviewers say

### DayCalc Pro

[App page](https://appshunter.io/ios/app/daycalc-pro-note-calculator/id654444242)

This app combines a powerful calculator with a comprehensive unit converter. It offers standard and scientific calculations, allows notes to be added to history, and supports a wide range of units and custom conversions. Enjoy a user-friendly interface with customizable themes and watchOS integration.

**Highlights:** Standard and scientific calculator, Add notes to calculations, Over 600 units in 20 categories, Custom unit creation, Automatic currency exchange rate updates, Dark Mode support, Apple Watch integration

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Constants Pack | $0.99 | one-time |
| Festivals Theme Pack 1 | $0.99 | one-time |
| Season Theme Pack 1 | $0.99 | one-time |
| Bird Theme Pack 1 | $0.99 | one-time |
| Insects Theme Pack 1 | $0.99 | one-time |
| Season Theme Pack 2 | $0.99 | one-time |
| Festivals Theme Pack 2 | $0.99 | one-time |
| Custom Unit Pack | $1.99 | one-time |
| Complete Pack | $4.99 | one-time |

**What reviewers like**

- 👍 Easy to use and intuitive interface
- 🎨 Customizable themes and colors
- 📊 Comprehensive feature set (scientific, fractions, conversions)
- 💰 Great value for price (free or $1)
- 📝 Useful history/tape feature for tracking calculations

**What reviewers complain about**

- 🐛 Update installation issues and stuck downloads
- 🐛 Display cutoff in landscape mode on smaller phones
- 🐛 Fraction display cuts off large numbers
- 🐛 Currency converter fails after favoriting
- 🐛 Copy function only copies first number

**Reported bugs**

- Latest update stuck on download/installation loop
- Display rendering issues in landscape mode on iPhone 12/13 mini
- Fraction results display truncated with large numbers
- Fraction operator placement incorrect during multi-step calculations
- Currency conversion broken after favoriting currencies

**Requested features**

- Cursor movement for easier digit and symbol editing
- Back button to delete individual numbers instead of clearing all
- History display directly above input without clicking
- Back button in converter functions for easier navigation
- Improved animated transitions for better aesthetics


### Calctan

[App page](https://appshunter.io/ios/app/calctan/id1445480535)

This sophisticated calculator app offers a minimalist design with advanced mathematical functions and extensive personalization options. It seamlessly syncs across devices and includes multitasking features for enhanced productivity.

**Highlights:** Intuitive minimalist design, 100+ customizable themes, 47 advanced mathematical functions, Automatic calculation history, iCloud sync across devices, Split Screen and Swipe Mode multitasking, Share calculations easily

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $9.99 | one-time |


## Frequently asked questions

### Is DayCalc Pro free?

DayCalc Pro costs $0.99, and also offers in-app purchases.

### Is Calctan free?

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

### Which has better reviews, DayCalc Pro or Calctan?

DayCalc Pro is rated higher. DayCalc Pro averages 4.6 out of 5 from 176 ratings, while Calctan averages 4.5 from 61 ratings.

### Do DayCalc Pro or Calctan have ads?

Calctan shows ads; DayCalc Pro does not.

### Which is updated more often, DayCalc Pro or Calctan?

DayCalc Pro ships an update every 6 weeks, and Calctan every 3 months. Most recently, DayCalc Pro was updated on September 24, 2026 and Calctan on September 25, 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.*