# Meterbox Probes vs SFL Inspector

Meterbox Probes and SFL Inspector 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.

Meterbox Probes ships an update every 3 months, SFL Inspector every 2 months. The most recent releases landed on October 12, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Meterbox Probes | SFL Inspector |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 5 MB | 28 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen Everbest Machinery Industry Co.,Ltd](https://appshunter.io/developer/564470332) | [Leighton Asia](https://appshunter.io/developer/1443997846) |

## What reviewers say

### Meterbox Probes

[App page](https://appshunter.io/ios/app/meterbox-probes/id1319208214)

**Features:** macOS Compatibility

**In-app purchases:** none


### SFL Inspector

[App page](https://appshunter.io/ios/app/sfl-inspector/id1479536531)

**In-app purchases:** none


## Frequently asked questions

### Is Meterbox Probes free?

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

### Is SFL Inspector free?

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

### Do Meterbox Probes or SFL Inspector have ads?

Neither Meterbox Probes nor SFL Inspector shows ads.

### Which is updated more often, Meterbox Probes or SFL Inspector?

Meterbox Probes ships an update every 3 months, and SFL Inspector every 2 months. Most recently, Meterbox Probes was updated on October 12, 2026 and SFL Inspector on October 19, 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.*