# Abacus & Calculator vs Sci

The clearest difference is review sentiment: Sci at 100% against Abacus & Calculator's 50%. Sci also leads on rating (5.0 vs 3.7) and update cadence (every 6 months vs every 28 months). Abacus & Calculator's advantage is price ($0.99 vs $3.99) and ratings volume (15 vs 3). On ads, in-app purchases, monetization model and device support there is nothing between them.

Abacus & Calculator costs $0.99 and Sci $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sci holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Abacus & Calculator has 15 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 50% of Abacus & Calculator's written reviews are positive against 100% of Sci's.

Abacus & Calculator ships an update every 28 months, Sci every 6 months. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Abacus & Calculator | Sci |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Rating | [3.7 (15 ratings)](https://appshunter.io/ios/app/abacus-and-calculator/id480503511/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sci-fi-calculator-widget/id6470088682/reviews)** |
| Number of ratings | **15** | 3 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 6 months** |
| Monetization | Paid | Paid |
| Size | 9 MB | 21 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [方明 陈](https://appshunter.io/developer/320136914) | [NSTE, LLC](https://appshunter.io/developer/1671708345) |

## What reviewers say

### Abacus & Calculator

[App page](https://appshunter.io/ios/app/abacus-and-calculator/id480503511)

This app combines a modern calculator with a traditional abacus for a unique calculation experience. It offers expression calculation and a history log, all optimized for iPad and other Apple devices.

**Highlights:** Classical keyboard, Expression calculating, Calculating history, Traditional abacus (Chinese/Japanese), iPad/iPhone/iPod Touch support

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

**In-app purchases:** none


### Sci

[App page](https://appshunter.io/ios/app/sci-fi-calculator-widget/id6470088682)

Customize your home screen with a calculator widget featuring 16 unique sci-fi themes. Enjoy futuristic aesthetics and sounds, transforming your device into a futuristic interface with a simple tap.

**Highlights:** 16 sci-fi themes, Home screen widget, Tap to switch themes, Futuristic sounds, iPhone and iPad support

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

**In-app purchases:** none


## Frequently asked questions

### Is Abacus & Calculator free?

Abacus & Calculator costs $0.99, with no in-app purchases.

### Is Sci free?

Sci costs $3.99, with no in-app purchases.

### Which has better reviews, Abacus & Calculator or Sci?

Sci is rated higher. Abacus & Calculator averages 3.7 out of 5 from 15 ratings, while Sci averages 5.0 from 3 ratings.

### Do Abacus & Calculator or Sci have ads?

Neither Abacus & Calculator nor Sci shows ads.

### Which is updated more often, Abacus & Calculator or Sci?

Abacus & Calculator ships an update every 28 months, and Sci every 6 months. Most recently, Abacus & Calculator was updated on October 15, 2026 and Sci on October 12, 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.*