# SkillUp City vs Complex Calc

The clearest difference is in-app purchases: Complex Calc at none against SkillUp City's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SkillUp City sells 10 one-off in-app purchases. Complex Calc asks for nothing beyond the download.

SkillUp City ships an update every 7 months, Complex Calc every 6 months. The most recent releases landed on September 29, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | SkillUp City | Complex Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/complex-calc/id1547989979/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 months** |
| Monetization | — | Free |
| Size | 84 MB | 12 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VTM VIETNAM J.S.C](https://appshunter.io/developer/586885851) | [Yevhen Pyvovarov](https://appshunter.io/developer/1547989981) |

## What reviewers say

### SkillUp City

[App page](https://appshunter.io/ios/app/skillup-city/id1439556290)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TopUp02 | $1.99 | one-time |
| TopUp03 | $2.99 | one-time |
| TopUp04 | $3.99 | one-time |
| TopUp05 | $4.99 | one-time |
| TopUp06 | $5.99 | one-time |
| TopUp07 | $6.99 | one-time |
| TopUp08 | $7.99 | one-time |
| TopUp09 | $8.99 | one-time |
| TopUp10 | $9.99 | one-time |
| TopUp11 | $10.99 | one-time |


### Complex Calc

[App page](https://appshunter.io/ios/app/complex-calc/id1547989979)

Perform advanced calculations with complex numbers, including conversions between rectangular and exponential forms. Features quick copy-paste functionality and automatic dark mode for a seamless user experience.

**Highlights:** Rectangular to exponential form conversion, Exponential to rectangular form conversion, Four basic operations with complex numbers, Quick copy-paste results, Auto dark mode

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SkillUp City free?

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

### Is Complex Calc free?

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

### Do SkillUp City or Complex Calc have ads?

Neither SkillUp City nor Complex Calc shows ads.

### Which is updated more often, SkillUp City or Complex Calc?

SkillUp City ships an update every 7 months, and Complex Calc every 6 months. Most recently, SkillUp City was updated on September 29, 2026 and Complex Calc on October 2, 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.*