# One Smart vs Sartor Arm

One Smart and Sartor Arm 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.

One Smart ships an update every 4 months, Sartor Arm every 5 months. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | One Smart | Sartor Arm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Size | 81 MB | 89 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [ONE TELECOM TELECOMUNICAÇÕES LTDA](https://appshunter.io/developer/1601306519) | [Sartor Cam](https://appshunter.io/developer/1710810202) |

## What reviewers say

### One Smart

[App page](https://appshunter.io/ios/app/one-smart/id6470018304)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sartor Arm

[App page](https://appshunter.io/ios/app/sartor-arm/id6499138023)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is One Smart free?

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

### Is Sartor Arm free?

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

### Do One Smart or Sartor Arm have ads?

Neither One Smart nor Sartor Arm shows ads.

### Which is updated more often, One Smart or Sartor Arm?

One Smart ships an update every 4 months, and Sartor Arm every 5 months. Most recently, One Smart was updated on October 14, 2026 and Sartor Arm on October 7, 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.*