# PIDTune vs EASY FI

The clearest difference is review sentiment: PIDTune at 100% against EASY FI's 50%. PIDTune also leads on in-app purchases (none vs 8). EASY FI's advantage is price (Free vs $4.99) and iOS requirement (9.0 vs 15.0). On update cadence, ads and device support there is nothing between them.

EASY FI is free to download; PIDTune costs $4.99 up front. EASY FI sells 8 one-off in-app purchases. PIDTune asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on September 21, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | PIDTune | EASY FI |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pidtune/id1045174726/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 5 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Richard H Street](https://appshunter.io/developer/954888336) | [DILTS JAPAN, LIMITED LIABILITY CO.](https://appshunter.io/developer/780416956) |

## What reviewers say

### PIDTune

[App page](https://appshunter.io/ios/app/pidtune/id1045174726)

This utility calculates PID tuning parameters using the IMC method for various process and controller types. It allows for direct input of process gain or variable changes, with adjustable tuning aggression via a slider.

**Highlights:** IMC method for PID tuning, Calculates Kc, Ti, Td, Supports FO, SO, and I process types, Handles Parallel and Series controller types, Adjustable tuning aggression slider, Input process gain or variable changes

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

**In-app purchases:** none


### EASY FI

[App page](https://appshunter.io/ios/app/easy-fi-con-type-x/id1384861887)

This application allows for the adjustment of ignition timing and fuel injection settings for specific motorcycle models. It offers preset data, real-time monitoring, and advanced tuning capabilities for enhanced engine performance. Requires a compatible device to unlock full functionality.

**Highlights:** Ignition timing adjustment, Fuel injection mapping, Real-time engine monitoring, Preset data loading, 3D map visualization, Dual map switching, Digital acceleration pump

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MONKEY125 JB02 | $3.99 | one-time |
| Z125 Pro | $3.99 | one-time |
| HUNTER CUB CT125 JA65 | $3.99 | one-time |
| GROM JC61/JC76 | $3.99 | one-time |
| GROM 8BJ-JC92 | $3.99 | one-time |
| MONKEY125 JB03/JB05 | $3.99 | one-time |
| DAX125 JB04/JB06 | $3.99 | one-time |
| CROSS CUB CC110 JA60 | $3.99 | one-time |


## Frequently asked questions

### Is PIDTune free?

PIDTune costs $4.99, with no in-app purchases.

### Is EASY FI free?

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

### Do PIDTune or EASY FI have ads?

Neither PIDTune nor EASY FI shows ads.

### Which is updated more often, PIDTune or EASY FI?

PIDTune ships an update every 4 months, and EASY FI every 4 months. Most recently, PIDTune was updated on September 21, 2026 and EASY FI on October 16, 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.*