# Nanotechnology vs Ket Steps

The clearest difference is in-app purchases: Ket Steps at none against Nanotechnology's 6. Ket Steps also leads on update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Nanotechnology sells 6 in-app purchases, starting at $9.99 per month. Ket Steps asks for nothing beyond the download.

Nanotechnology ships an update every 2 months, Ket Steps every 2 weeks. The most recent releases landed on September 19, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Nanotechnology | Ket Steps |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 24 MB | 7 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) | [YARON AMIR BENJAMIN DR. GOLDSTEIN](https://appshunter.io/developer/1850455880) |

## What reviewers say

### Nanotechnology

[App page](https://appshunter.io/ios/app/nanotechnology/id6740209781)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $9.99 | per month |
| 6 Months | $19.99 | per 6 months |
| 1 Year | $29.99 | per year |
| 1500 | $0.99 | one-time |
| 3500 | $1.99 | one-time |
| 9000 | $3.99 | one-time |


### Ket Steps

[App page](https://appshunter.io/ios/app/ket-steps/id6762529698)

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

**In-app purchases:** none


## Frequently asked questions

### Is Nanotechnology free?

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

### Is Ket Steps free?

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

### Do Nanotechnology or Ket Steps have ads?

Neither Nanotechnology nor Ket Steps shows ads.

### Which is updated more often, Nanotechnology or Ket Steps?

Nanotechnology ships an update every 2 months, and Ket Steps every 2 weeks. Most recently, Nanotechnology was updated on September 19, 2026 and Ket Steps on September 10, 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.*