# Slab Estimate vs Know

The clearest difference is update cadence: Slab Estimate at monthly against Know's every 3 months. Slab Estimate also leads on iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support 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, Know every 3 months. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Slab Estimate | Know |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Size | 60 MB | 15 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aasma Technology Solutions](https://appshunter.io/developer/1711647513) | [DEFT AND TACT SOLUTIONS PRIVATE LIMITED](https://appshunter.io/developer/1335892911) |

## What reviewers say

### Slab Estimate

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Know

[App page](https://appshunter.io/ios/app/know-now/id6745221160)

**In-app purchases:** none


## Frequently asked questions

### Is Slab Estimate free?

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

### Is Know free?

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

### Do Slab Estimate or Know have ads?

Neither Slab Estimate nor Know shows ads.

### Which is updated more often, Slab Estimate or Know?

Slab Estimate ships an update monthly, and Know every 3 months. Most recently, Slab Estimate was updated on October 6, 2026 and Know on October 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*