# Z vs LoWisa

The clearest difference is price: LoWisa at Free against Z's $2.99. LoWisa also leads on ads (none vs shown) and update cadence (every 5 days vs every 6 weeks). Z's advantage is in-app purchases (none vs 6) and iOS requirement (12.0 vs 15.1). On device support there is nothing between them.

LoWisa is free to download; Z costs $2.99 up front. LoWisa sells 6 in-app purchases, starting at $7.99 per month. Z asks for nothing beyond the download.

Z ships an update every 6 weeks, LoWisa every 5 days. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Z | LoWisa |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/z-table-statistics/id6738610691/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | Ad-supported | — |
| Size | 32 MB | 62 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JanoGroup LLC](https://appshunter.io/developer/1781461557) | [Samuel Jesse](https://appshunter.io/developer/6804560650) |

## What reviewers say

### Z

[App page](https://appshunter.io/ios/app/z-table-statistics/id6738610691)

This app provides a quick and easy way for students and professionals to look up Z-scores and calculate corresponding probabilities. It features comprehensive Z-score tables and a user-friendly interface for efficient statistical analysis.

**Highlights:** Comprehensive Z-score tables, Fast probability calculation, User-friendly interface, Educational tool for statistics, Reference for data analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### LoWisa

[App page](https://appshunter.io/ios/app/lowisa-ai-assisted-learning/id6804560648)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LoWisa Starter | $7.99 | per month |
| LoWisa Plus | $12.99 | per month |
| LoWisa Plus | $17.99 | per month |
| LoWisa Plus Max | $24.99 | per month |
| 500 Tutor Credits | $5.00 | one-time |
| 1,000 tutor credits | $10.00 | one-time |


## Frequently asked questions

### Is Z free?

Z costs $2.99, with no in-app purchases.

### Is LoWisa free?

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

### Do Z or LoWisa have ads?

Z shows ads; LoWisa does not.

### Which is updated more often, Z or LoWisa?

Z ships an update every 6 weeks, and LoWisa every 5 days. Most recently, Z was updated on October 9, 2026 and LoWisa 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.*