# BT TPMS vs eFlow

The clearest difference is iOS requirement: BT TPMS at 8.0 against eFlow's 11. On price, update cadence, ads and in-app purchases there is nothing between them.

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

BT TPMS ships an update every 2 weeks, eFlow every 3 weeks. The most recent releases landed on September 18, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | BT TPMS | eFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/eflow/id1434703366/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | — | Free |
| Size | 7 MB | 3 MB |
| Requires iOS | **8.0** | 11 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [如龙 谭](https://appshunter.io/developer/995236511) | [Savant Electronics Inc.](https://appshunter.io/developer/1288418213) |

## What reviewers say

### BT TPMS

[App page](https://appshunter.io/ios/app/bt-tpms/id1281418348)

**Features:** macOS Compatibility

**In-app purchases:** none


### eFlow

[App page](https://appshunter.io/ios/app/eflow/id1434703366)

Monitor the capacity of your water filters using a Bluetooth flow meter. Track multiple filters simultaneously to ensure optimal performance and timely replacements.

**Highlights:** Read water filter capacity via Bluetooth, Connect to Bluetooth flow meter, Monitor multiple water filters, Track filter performance

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BT TPMS free?

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

### Is eFlow free?

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

### Do BT TPMS or eFlow have ads?

Neither BT TPMS nor eFlow shows ads.

### Which is updated more often, BT TPMS or eFlow?

BT TPMS ships an update every 2 weeks, and eFlow every 3 weeks. Most recently, BT TPMS was updated on September 18, 2026 and eFlow on October 2, 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.*