# FocusKit vs Calc

The clearest difference is in-app purchases: Calc at none against FocusKit's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. FocusKit sells 4 in-app purchases, starting at $1.99 per 7 days. Calc asks for nothing beyond the download.

FocusKit ships an update fortnightly, Calc every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | FocusKit | Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calc-u-59/id6761413142/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | — | Free |
| Size | 180 MB | 9 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Abbosjon Mamadaliyev](https://appshunter.io/developer/1866571252) | [Martin Erzberger](https://appshunter.io/developer/1889469770) |

## What reviewers say

### FocusKit

[App page](https://appshunter.io/ios/app/focuskit-pomodoro-study-timer/id6761177242)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $1.99 | per 7 days |
| Annual Plan | $19.99 | per year |
| FocusKit - Lifetime | $12.99 | one-time |
| Lifetime Access | $39.99 | one-time |


### Calc

[App page](https://appshunter.io/ios/app/calc-u-59/id6761413142)

Explore the inner workings of classic TI-59, TI-58, and TI-58C calculators. This tool offers cycle-accurate emulation, a debugger to inspect code and registers, and a functional paper tape printer recreation. Load and save programs using magnetic card emulation and state files.

**Highlights:** Cycle-accurate TMC0501 processor emulation, Integrated debugger for program and register inspection, Functional PC-100C paper tape printer recreation, Magnetic card reader for loading/saving programs, State file loading for instant machine configuration, Solid State Module support

**In-app purchases:** none


## Frequently asked questions

### Is FocusKit free?

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

### Is Calc free?

Calc is free to download, with no in-app purchases.

### Do FocusKit or Calc have ads?

Neither FocusKit nor Calc shows ads.

### Which is updated more often, FocusKit or Calc?

FocusKit ships an update fortnightly, and Calc every 3 weeks. Most recently, FocusKit was updated on October 24, 2026 and Calc 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.*