# Dyno Chart vs DynoLog

The clearest difference is update cadence: DynoLog at daily against Dyno Chart's every 3 months. Dyno Chart's advantage is iOS requirement (7.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Dyno Chart sells 1 one-off in-app purchase and DynoLog sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Dyno Chart ships an update every 3 months, DynoLog daily. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Dyno Chart | DynoLog |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 44 MB |
| Requires iOS | **7.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [K SOLUTION LLC](https://appshunter.io/developer/289670447) | [DtimesTwo Technologies LLC](https://appshunter.io/developer/1894087614) |

## 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 |


### DynoLog

[App page](https://appshunter.io/ios/app/dynolog/id6773087004)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DynoLog Unlimited | $6.99 | one-time |


## Frequently asked questions

### Is Dyno Chart free?

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

### Is DynoLog free?

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

### Do Dyno Chart or DynoLog have ads?

Neither Dyno Chart nor DynoLog shows ads.

### Which is updated more often, Dyno Chart or DynoLog?

Dyno Chart ships an update every 3 months, and DynoLog daily. Most recently, Dyno Chart was updated on November 1, 2026 and DynoLog on October 31, 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.*