# Lambda Tuner vs Milling Speed and Feed Calc

The clearest difference is rating: Milling Speed and Feed Calc at 3.8 against Lambda Tuner's 3.3. Milling Speed and Feed Calc also leads on ratings volume (24 vs 3) and price ($2.99 vs $3.99). Lambda Tuner's advantage is update cadence (every 19 months vs every 42 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

Lambda Tuner costs $3.99 and Milling Speed and Feed Calc $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Milling Speed and Feed Calc holds the better App Store score, 3.8 against 3.3. That said, the two scores are not equally well evidenced: Milling Speed and Feed Calc has 24 ratings behind it against 3, so its average is the more settled of the two.

Lambda Tuner ships an update every 19 months, Milling Speed and Feed Calc every 42 months. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Lambda Tuner | Milling Speed and Feed Calc |
| --- | --- | --- |
| Price | $3.99 | **$2.99** |
| Rating | [3.3 (3 ratings)](https://appshunter.io/ios/app/lambda-tuner/id632731065/reviews) | **[3.8 (24 ratings)](https://appshunter.io/ios/app/milling-speed-and-feed-calc/id1447936543/reviews)** |
| Number of ratings | 3 | **24** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 19 months** | Every 42 months |
| Monetization | Paid | Paid |
| Size | 1 MB | 8 MB |
| Requires iOS | 16.6 | **12** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Johan Bjors](https://appshunter.io/developer/632731068) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### Lambda Tuner

[App page](https://appshunter.io/ios/app/lambda-tuner/id632731065)

This tool helps tune PID controllers using the Lambda method to calculate P, I, and D parameters. It's designed for intuitive use in various process industries and works on self-regulating and integrating loops. You can also use it to learn the impact of different PID parameters.

**Highlights:** Lambda method for PID parameter calculation, Supports self-regulating and integrating loops, Intuitive and easy to use interface, Adjustable Lambda value for reaction speed, Manual PID parameter testing, Educational tool for PID parameter impact

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

**In-app purchases:** none


### Milling Speed and Feed Calc

[App page](https://appshunter.io/ios/app/milling-speed-and-feed-calc/id1447936543)

Quickly calculate spindle speed and feed rate for milling operations. This tool provides instant results, supports various units, and includes formulas for reference. Ideal for machinists and CNC operators.

**Highlights:** Instant calculation, Copy results to other apps, Includes formulas for reference, Supports 16 decimal places, Supports various input units

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

**In-app purchases:** none


## Frequently asked questions

### Is Lambda Tuner free?

Lambda Tuner costs $3.99, with no in-app purchases.

### Is Milling Speed and Feed Calc free?

Milling Speed and Feed Calc costs $2.99, with no in-app purchases.

### Which has better reviews, Lambda Tuner or Milling Speed and Feed Calc?

Milling Speed and Feed Calc is rated higher. Lambda Tuner averages 3.3 out of 5 from 3 ratings, while Milling Speed and Feed Calc averages 3.8 from 24 ratings.

### Do Lambda Tuner or Milling Speed and Feed Calc have ads?

Neither Lambda Tuner nor Milling Speed and Feed Calc shows ads.

### Which is updated more often, Lambda Tuner or Milling Speed and Feed Calc?

Lambda Tuner ships an update every 19 months, and Milling Speed and Feed Calc every 42 months. Most recently, Lambda Tuner was updated on October 8, 2026 and Milling Speed and Feed Calc on October 15, 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.*