# Slab Estimate vs Zona (99ed8d)

The clearest difference is iOS requirement: Slab Estimate at 13.0 against Zona (99ed8d)'s 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Slab Estimate ships an update monthly, Zona (99ed8d) every 2 months. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Slab Estimate | Zona (99ed8d) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/zona-99ed8d/id6784091735/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | — | Free |
| Size | 60 MB | 30 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aasma Technology Solutions](https://appshunter.io/developer/1711647513) | [Ricardo Perez Castillo](https://appshunter.io/developer/6784091737) |

## What reviewers say

### Slab Estimate

[App page](https://appshunter.io/ios/app/slab-estimate/id6476886840)

**Features:** macOS Compatibility

**In-app purchases:** none


### Zona (99ed8d)

[App page](https://appshunter.io/ios/app/zona-99ed8d/id6784091735)

This app acts as a personal map to save and remember places you visit and events you attend. It allows you to drop pins, add details like titles, addresses, and notes, and categorize events. All your saved information is accessible from the map or a dedicated library.

**Highlights:** Save places with pins, Add titles, addresses, and notes, Categorize and attach events, Access saved data from map or library, Private by default, Supports dark/light appearance

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

**In-app purchases:** none


## Frequently asked questions

### Is Slab Estimate free?

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

### Is Zona (99ed8d) free?

Zona (99ed8d) is free to download, with no in-app purchases.

### Do Slab Estimate or Zona (99ed8d) have ads?

Neither Slab Estimate nor Zona (99ed8d) shows ads.

### Which is updated more often, Slab Estimate or Zona (99ed8d)?

Slab Estimate ships an update monthly, and Zona (99ed8d) every 2 months. Most recently, Slab Estimate was updated on October 6, 2026 and Zona (99ed8d) on October 14, 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.*