# SFX Scientific Calculator vs Tally

The clearest difference is in-app purchases: SFX Scientific Calculator at none against Tally's 2. SFX Scientific Calculator also leads on device support (4 vs 1) and iOS requirement (14.0 vs 16.4). Tally's advantage is ads (none vs shown). On price and update cadence there is nothing between them.

Both are free to download. Tally sells 2 in-app purchases, starting at $2.99 per month. SFX Scientific Calculator asks for nothing beyond the download.

SFX Scientific Calculator ships an update every 3 weeks, Tally every 10 days. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SFX Scientific Calculator | Tally |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (145 ratings)](https://appshunter.io/ios/app/sfx-scientific-calculator/id1548427958/reviews)** | — |
| Number of ratings | **145** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Ad-supported | — |
| Size | 20 MB | 67 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Wai Kwong Lee](https://appshunter.io/developer/1548427960) | [Ali Aljumah](https://appshunter.io/developer/6791083792) |

## What reviewers say

### SFX Scientific Calculator

[App page](https://appshunter.io/ios/app/sfx-scientific-calculator/id1548427958)

This free calculator app is designed for academic, scientific, and engineering needs. It offers basic arithmetic, memory storage, fraction and percentage calculations, and advanced functions like linear regression and hexadecimal conversions. Its user interface mimics a Casio scientific calculator.

**Highlights:** Basic arithmetic, Constant and memory storage, Fraction and percentage calculation, Linear regression and statistics, Number base conversions (Binary, Octal, Decimal, Hexadecimal), Advanced mathematical functions, Formula calculations

**Features:** Vision Pro support

**In-app purchases:** none


### Tally

[App page](https://appshunter.io/ios/app/tally-subscriptions-tracker/id6791083790)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | per month |
| Premium Yearly | $24.99 | per year |


## Frequently asked questions

### Is SFX Scientific Calculator free?

SFX Scientific Calculator is free to download, with no in-app purchases.

### Is Tally free?

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

### Do SFX Scientific Calculator or Tally have ads?

SFX Scientific Calculator shows ads; Tally does not.

### Which is updated more often, SFX Scientific Calculator or Tally?

SFX Scientific Calculator ships an update every 3 weeks, and Tally every 10 days. Most recently, SFX Scientific Calculator was updated on October 25, 2026 and Tally on October 10, 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.*