# Calctan vs PK10000

The clearest difference is ads: PK10000 at none against Calctan's shown. PK10000 also leads on review sentiment (55% vs 29%) and update cadence (every 3 weeks vs every 3 months). Calctan's advantage is rating (4.5 vs 4.3) and ratings volume (61 vs 6). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Calctan sells 1 one-off in-app purchase and PK10000 sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Calctan holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Calctan has 61 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 29% of Calctan's written reviews are positive against 55% of PK10000's, so the app with the better star average is not the one people write more warmly about.

Calctan ships an update every 3 months, PK10000 every 3 weeks. The most recent releases landed on September 25, 2026 and August 18, 2026 respectively.

## The numbers

| Metric | Calctan | PK10000 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (61 ratings)](https://appshunter.io/ios/app/calctan/id1445480535/reviews)** | [4.3 (6 ratings)](https://appshunter.io/ios/app/pk10000-focus-timer/id6469668991/reviews) |
| Number of ratings | **61** | 6 |
| Positive reviews | 28.6% of reviews | **54.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 11 MB | 56 MB |
| Requires iOS | 16.6 | **15.2** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jorge Lozada](https://appshunter.io/developer/421852863) | [正峰 蒋](https://appshunter.io/developer/1102407664) |

## What reviewers say

### 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 |


### PK10000

[App page](https://appshunter.io/ios/app/pk10000-focus-timer/id6469668991)

This app helps you achieve mastery through deliberate practice by tracking your progress towards long-term goals. It offers goal management, detailed statistics, and a Pomodoro timer to enhance focus and efficiency.

**Highlights:** Goal Management (100-10,000 hours), Tag Classification (12 categories), Data Statistics (daily, monthly, yearly), Pomodoro Timer (study/break sessions), Minimalist Interface, Subscription Plans

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Annually | $3.99 | per year |
| Early Bird MemberShip | $2.99 | one-time |
| Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Calctan free?

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

### Is PK10000 free?

PK10000 is free to download, with in-app purchases available.

### Which has better reviews, Calctan or PK10000?

Calctan is rated higher. Calctan averages 4.5 out of 5 from 61 ratings, while PK10000 averages 4.3 from 6 ratings.

### Do Calctan or PK10000 have ads?

Calctan shows ads; PK10000 does not.

### Which is updated more often, Calctan or PK10000?

Calctan ships an update every 3 months, and PK10000 every 3 weeks. Most recently, Calctan was updated on September 25, 2026 and PK10000 on August 18, 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.*