# SmartChaja vs Sala Zetu

SmartChaja and Sala Zetu are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

SmartChaja ships an update every 10 days, Sala Zetu fortnightly. The most recent releases landed on October 19, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SmartChaja | Sala Zetu |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Fortnightly |
| Size | 53 MB | 30 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TEWL (TJR ENGINEERING WORKS LIMITED)](https://appshunter.io/developer/1863200366) | [EvMak Tanzania](https://appshunter.io/developer/961301921) |

## What reviewers say

### SmartChaja

[App page](https://appshunter.io/ios/app/smartchaja/id6756839159)

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

**In-app purchases:** none


### Sala Zetu

[App page](https://appshunter.io/ios/app/sala-zetu/id6778331849)

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

**In-app purchases:** none


## Frequently asked questions

### Is SmartChaja free?

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

### Is Sala Zetu free?

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

### Do SmartChaja or Sala Zetu have ads?

Neither SmartChaja nor Sala Zetu shows ads.

### Which is updated more often, SmartChaja or Sala Zetu?

SmartChaja ships an update every 10 days, and Sala Zetu fortnightly. Most recently, SmartChaja was updated on October 19, 2026 and Sala Zetu on October 31, 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.*