# Revogi SmartMeter vs BioTag+

The clearest difference is update cadence: BioTag+ at every 10 days against Revogi SmartMeter's every 4 months. Revogi SmartMeter's advantage is iOS requirement (9.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

Revogi SmartMeter ships an update every 4 months, BioTag+ every 10 days. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Revogi SmartMeter | BioTag+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.9 (31 ratings)](https://appshunter.io/ios/app/revogi-smartmeter/id937072333/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 29.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 10 days** |
| Monetization | Free | — |
| Size | 9 MB | 57 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Revogi Innovation Co., Ltd.](https://appshunter.io/developer/660013953) | [BioCV](https://appshunter.io/developer/1826461616) |

## What reviewers say

### Revogi SmartMeter

[App page](https://appshunter.io/ios/app/revogi-smartmeter/id937072333)

Monitor the power consumption of your electric appliances in real-time. Track historical usage and set custom rules to automatically turn devices on or off, helping you save energy.

**Highlights:** Real-time power detection, Power consumption history tracking, Customizable on/off rules, Bluetooth 4.0 connectivity, Energy saving capabilities

**Features:** macOS Compatibility

**In-app purchases:** none


### BioTag+

[App page](https://appshunter.io/ios/app/biotag-plus/id6763246863)

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

**In-app purchases:** none


## Frequently asked questions

### Is Revogi SmartMeter free?

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

### Is BioTag+ free?

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

### Do Revogi SmartMeter or BioTag+ have ads?

Neither Revogi SmartMeter nor BioTag+ shows ads.

### Which is updated more often, Revogi SmartMeter or BioTag+?

Revogi SmartMeter ships an update every 4 months, and BioTag+ every 10 days. Most recently, Revogi SmartMeter was updated on October 16, 2026 and BioTag+ on October 9, 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.*