# Advanced Calculator. HIgh vs Focus Timer

The clearest difference is in-app purchases: Advanced Calculator. HIgh at none against Focus Timer's 3. Focus Timer's advantage is update cadence (fortnightly vs every 6 weeks) and iOS requirement (13.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Focus Timer sells 3 in-app purchases, starting at $4.99 per 7 days. Advanced Calculator. HIgh asks for nothing beyond the download.

Advanced Calculator. HIgh ships an update every 6 weeks, Focus Timer fortnightly. The most recent releases landed on June 8, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Advanced Calculator. HIgh | Focus Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/advanced-calculator-high-tech/id6754898336/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 3 MB | 38 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Martha G Korra](https://appshunter.io/developer/1850850935) | [EMRE KOTUN](https://appshunter.io/developer/1796678115) |

## What reviewers say

### Advanced Calculator. HIgh

[App page](https://appshunter.io/ios/app/advanced-calculator-high-tech/id6754898336)

This app combines a basic, scientific, and graphing calculator with a unit converter. It offers advanced mathematical functions, equation plotting, and seamless unit conversions for various needs. Access your calculation history across all modes.

**Highlights:** Basic, Scientific, and Graphing Calculators, Advanced Mathematical Functions, Real-time Function Plotting, Smart Unit Converter (Length, Weight, Temp, Area, Volume), Calculation History, Customizable Expressions

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

**In-app purchases:** none


### Focus Timer

[App page](https://appshunter.io/ios/app/focus-timer-time-tracker/id6756212274)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $4.99 | per 7 days |
| Premium Access | $29.99 | per year |
| Premium Lifetime Access | $9.99 | one-time |


## Frequently asked questions

### Is Advanced Calculator. HIgh free?

Advanced Calculator. HIgh is free to download, with no in-app purchases.

### Is Focus Timer free?

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

### Do Advanced Calculator. HIgh or Focus Timer have ads?

Neither Advanced Calculator. HIgh nor Focus Timer shows ads.

### Which is updated more often, Advanced Calculator. HIgh or Focus Timer?

Advanced Calculator. HIgh ships an update every 6 weeks, and Focus Timer fortnightly. Most recently, Advanced Calculator. HIgh was updated on June 8, 2026 and Focus Timer on September 8, 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.*