# Dyno Chart vs Streamlines Firmware Updater

The clearest difference is in-app purchases: Streamlines Firmware Updater at none against Dyno Chart's 1. Dyno Chart's advantage is update cadence (every 3 months vs every 18 months) and iOS requirement (7.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Dyno Chart sells 1 one-off in-app purchase. Streamlines Firmware Updater asks for nothing beyond the download.

Dyno Chart ships an update every 3 months, Streamlines Firmware Updater every 18 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Dyno Chart | Streamlines Firmware Updater |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.2 (6 ratings)](https://appshunter.io/ios/app/dyno-chart-obd-ii-engine-performance-tool/id602676538/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 18 months |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 2 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [K SOLUTION LLC](https://appshunter.io/developer/289670447) | [Streamlines Aero Ltd](https://appshunter.io/developer/1653411775) |

## What reviewers say

### Dyno Chart

[App page](https://appshunter.io/ios/app/dyno-chart-obd-ii-engine-performance-tool/id602676538)

This tool analyzes your vehicle's engine performance, displaying max power and torque against RPM. It connects via an OBD II adapter to gather sensor data and generate detailed charts. Ensure compatibility before unlocking full features.

**Highlights:** Max power and torque vs RPM charts, OBD II sensor data collection, Vehicle compatibility check, ELM Wi-Fi/Bluetooth LE adapter support, In-app chart function unlock

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dyno Chart Unlock | $4.99 | one-time |


### Streamlines Firmware Updater

[App page](https://appshunter.io/ios/app/streamlines-firmware-updater/id6444262354)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dyno Chart free?

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

### Is Streamlines Firmware Updater free?

Streamlines Firmware Updater is free to download, with no in-app purchases.

### Do Dyno Chart or Streamlines Firmware Updater have ads?

Neither Dyno Chart nor Streamlines Firmware Updater shows ads.

### Which is updated more often, Dyno Chart or Streamlines Firmware Updater?

Dyno Chart ships an update every 3 months, and Streamlines Firmware Updater every 18 months. Most recently, Dyno Chart was updated on October 24, 2026 and Streamlines Firmware Updater on October 27, 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.*