# Dyno Chart vs Revvo

The clearest difference is update cadence: Revvo at every 6 days against Dyno Chart's every 3 months. Dyno Chart's advantage is iOS requirement (7.0 vs 26.0). 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 Revvo 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, Revvo every 6 days. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Dyno Chart | Revvo |
| --- | --- | --- |
| 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 | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 5 MB |
| Requires iOS | **7.0** | 26.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [K SOLUTION LLC](https://appshunter.io/developer/289670447) | [Fabio Silva](https://appshunter.io/developer/6775321070) |

## 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 |


### Revvo

[App page](https://appshunter.io/ios/app/revvo-0-100-accelerometer/id6775321068)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Revvo Pro | $12.99 | one-time |


## Frequently asked questions

### Is Dyno Chart free?

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

### Is Revvo free?

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

### Do Dyno Chart or Revvo have ads?

Neither Dyno Chart nor Revvo shows ads.

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

Dyno Chart ships an update every 3 months, and Revvo every 6 days. Most recently, Dyno Chart was updated on October 10, 2026 and Revvo on September 30, 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.*