# Defi Meter C vs GNSS Circuit Logger

The clearest difference is review sentiment: GNSS Circuit Logger at 78% against Defi Meter C's 20%. GNSS Circuit Logger also leads on update cadence (every 11 days vs every 5 weeks). Defi Meter C's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, 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.

Defi Meter C ships an update every 5 weeks, GNSS Circuit Logger every 11 days. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Defi Meter C | GNSS Circuit Logger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/defi-meter-c/id887419339/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 20.0% of reviews | **77.8% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 11 days** |
| Monetization | **Free** | Ad-supported |
| Size | 6 MB | 14 MB |
| Requires iOS | **8.0** | 10.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Defi](https://appshunter.io/developer/887419342) | [Yuji Kanda](https://appshunter.io/developer/1244419770) |

## What reviewers say

### Defi Meter C

[App page](https://appshunter.io/ios/app/defi-meter-c/id887419339)

Connects to the Defi Smart Adapter W via Bluetooth to display vehicle data from ADVANCE Control Unit or OBD on your iOS device. View various sensor readings like speed, RPM, and temperature in analog or digital formats.

**Highlights:** Bluetooth connectivity, Displays vehicle sensor data, Analog and digital meter views, Customizable meter styles, Supports various sensor readings

**Features:** macOS Compatibility

**In-app purchases:** none


### GNSS Circuit Logger

[App page](https://appshunter.io/ios/app/gnss-circuit-logger/id1435155551)

This application functions as a lap timer for circuit driving, utilizing GNSS technology. It supports various BLE devices for data logging and offers CSV, NMEA, and GPX output formats for lap times.

**Highlights:** GNSS lap timer for circuit driving, BLE device compatibility (LNS and QSTARZ protocols), CSV, NMEA, GPX lap time output, Data logging for circuit racing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Defi Meter C free?

Defi Meter C is free to download, with no in-app purchases.

### Is GNSS Circuit Logger free?

GNSS Circuit Logger is free to download, with no in-app purchases.

### Do Defi Meter C or GNSS Circuit Logger have ads?

GNSS Circuit Logger shows ads; Defi Meter C does not.

### Which is updated more often, Defi Meter C or GNSS Circuit Logger?

Defi Meter C ships an update every 5 weeks, and GNSS Circuit Logger every 11 days. Most recently, Defi Meter C was updated on November 1, 2026 and GNSS Circuit Logger on November 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.*