# Calctan vs Historical snapshot

The clearest difference is price: Calctan at Free against Historical snapshot's $1.99. Calctan also leads on rating (4.5 vs 1.0) and review sentiment (29% vs 0%). Historical snapshot's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Calctan is free to download; Historical snapshot costs $1.99 up front. Calctan sells 1 one-off in-app purchase. Historical snapshot asks for nothing beyond the download.

Calctan holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Calctan has 61 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 29% of Calctan's written reviews are positive against 0% of Historical snapshot's.

Calctan ships an update every 3 months, Historical snapshot weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Calctan | Historical snapshot |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.5 (61 ratings)](https://appshunter.io/ios/app/calctan/id1445480535/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/historical-snapshot/id1495566749/reviews) |
| Number of ratings | **61** | 2 |
| Positive reviews | **28.6% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 11 MB | 58 MB |
| Requires iOS | 16.6 | **8.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jorge Lozada](https://appshunter.io/developer/421852863) | [子浩 张](https://appshunter.io/developer/634469749) |

## 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 |


### Historical snapshot

[App page](https://appshunter.io/ios/app/historical-snapshot/id1495566749)

Discover significant world events and historical moments. This app provides a glimpse into the past, making history accessible and engaging.

**Highlights:** View important world events, Historical snapshots, Accessible history content

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calctan free?

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

### Is Historical snapshot free?

Historical snapshot costs $1.99, with no in-app purchases.

### Which has better reviews, Calctan or Historical snapshot?

Calctan is rated higher. Calctan averages 4.5 out of 5 from 61 ratings, while Historical snapshot averages 1.0 from 2 ratings.

### Do Calctan or Historical snapshot have ads?

Calctan shows ads; Historical snapshot does not.

### Which is updated more often, Calctan or Historical snapshot?

Calctan ships an update every 3 months, and Historical snapshot weekly. Most recently, Calctan was updated on October 24, 2026 and Historical snapshot on October 24, 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.*