# PIDTune vs TTTC Scan

The clearest difference is price: TTTC Scan at Free against PIDTune's $4.99. TTTC Scan also leads on iOS requirement (13.0 vs 15.0). PIDTune's advantage is rating (5.0 vs 4.0) and update cadence (every 4 months vs every 12 months). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

TTTC Scan is free to download; PIDTune costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PIDTune holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

PIDTune ships an update every 4 months, TTTC Scan every 12 months. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | PIDTune | TTTC Scan |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pidtune/id1045174726/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/tttc-scan/id1071179234/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 12 months |
| Monetization | Paid | **Free** |
| Size | 1 MB | 5 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Richard H Street](https://appshunter.io/developer/954888336) | [Ticket Market LLC](https://appshunter.io/developer/1071179233) |

## 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


### TTTC Scan

[App page](https://appshunter.io/ios/app/tttc-scan/id1071179234)

This utility allows event staff to scan customer e-tickets at the door using an iPhone or iPod Touch. It provides a secure login and enables ticket barcode scanning via the device's camera, freeing staff from computer terminals.

**Highlights:** Scan e-tickets at the door, Use iPhone or iPod Touch camera, Secure login for staff, Select performance dates, Barcode scanning functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PIDTune free?

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

### Is TTTC Scan free?

TTTC Scan is free to download, with no in-app purchases.

### Which has better reviews, PIDTune or TTTC Scan?

PIDTune is rated higher. PIDTune averages 5.0 out of 5 from 2 ratings, while TTTC Scan averages 4.0 from 1 ratings.

### Do PIDTune or TTTC Scan have ads?

Neither PIDTune nor TTTC Scan shows ads.

### Which is updated more often, PIDTune or TTTC Scan?

PIDTune ships an update every 4 months, and TTTC Scan every 12 months. Most recently, PIDTune was updated on October 8, 2026 and TTTC Scan on October 13, 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.*