# ZL+ vs Summe Calculator

The clearest difference is in-app purchases: ZL+ at none against Summe Calculator's 1. ZL+ also leads on iOS requirement (12.4 vs 16.0). Summe Calculator's advantage is update cadence (fortnightly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Summe Calculator sells 1 one-off in-app purchase. ZL+ asks for nothing beyond the download.

ZL+ ships an update every 2 months, Summe Calculator fortnightly. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ZL+ | Summe Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/summe-calculator/id6798785168/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 27 MB | 10 MB |
| Requires iOS | **12.4** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [MAV X Tecnologia](https://appshunter.io/developer/1513392890) | [ESLIP OU](https://appshunter.io/developer/6798785350) |

## What reviewers say

### ZL+

[App page](https://appshunter.io/ios/app/zl-plus/id6443710491)

**Features:** macOS Compatibility

**In-app purchases:** none


### Summe Calculator

[App page](https://appshunter.io/ios/app/summe-calculator/id6798785168)

This application offers advanced mathematical capabilities, including plotting 2D and 3D graphs, solving complex equations, and performing statistical analysis. It supports natural input and provides a comprehensive function library for finance, science, and engineering.

**Highlights:** Natural math input with readable formatting, 2D and 3D graphing of curves and surfaces, Extensive function library for finance and science, Symbolic and numerical equation solving, Matrix and linear algebra operations, Statistical analysis and data modeling, Complex number calculations

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Summe+ | $5.99 | one-time |


## Frequently asked questions

### Is ZL+ free?

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

### Is Summe Calculator free?

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

### Do ZL+ or Summe Calculator have ads?

Neither ZL+ nor Summe Calculator shows ads.

### Which is updated more often, ZL+ or Summe Calculator?

ZL+ ships an update every 2 months, and Summe Calculator fortnightly. Most recently, ZL+ was updated on October 27, 2026 and Summe Calculator on October 25, 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.*