# SmartMeters vs Authenticator

The clearest difference is in-app purchases: SmartMeters at none against Authenticator's 2. SmartMeters also leads on iOS requirement (16.4 vs 18.5). Authenticator's advantage is update cadence (weekly vs every 20 months). On price, ads and device support there is nothing between them.

Both are free to download. Authenticator sells 2 in-app purchases, starting at $9.99 per 7 days. SmartMeters asks for nothing beyond the download.

SmartMeters ships an update every 20 months, Authenticator weekly. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | SmartMeters | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/smartmeters/id1487595512/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Weekly** |
| Monetization | Free | — |
| Size | 56 MB | 112 MB |
| Requires iOS | **16.4** | 18.5 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Siargo,Inc](https://appshunter.io/developer/1318593278) | [BU Guard GmbH](https://appshunter.io/developer/1858539616) |

## What reviewers say

### SmartMeters

[App page](https://appshunter.io/ios/app/smartmeters/id1487595512)

This application monitors real-time flow data from smart flow meters. It allows users to view instantaneous flow rates, total usage, battery levels, and remaining cylinder capacity. The app provides a comprehensive solution for managing gas and microfluidic flow measurements.

**Highlights:** Real-time flow data monitoring, View dynamic flow curves, Calculate total flow and battery level, Monitor cylinder remaining capacity, Bluetooth wireless data transmission, Set high/low flow rate alarms

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

**In-app purchases:** none


### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-2fa-app/id6760155508)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $9.99 | per 7 days |
| Premium Access Year | $44.99 | per year |


## Frequently asked questions

### Is SmartMeters free?

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

### Is Authenticator free?

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

### Do SmartMeters or Authenticator have ads?

Neither SmartMeters nor Authenticator shows ads.

### Which is updated more often, SmartMeters or Authenticator?

SmartMeters ships an update every 20 months, and Authenticator weekly. Most recently, SmartMeters was updated on October 14, 2026 and Authenticator on October 3, 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.*