# EngineCalc vs Tech2

The clearest difference is price: Tech2 at Free against EngineCalc's $0.99. EngineCalc's advantage is review sentiment (60% vs 50%) and iOS requirement (6.0 vs 14.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Tech2 is free to download; EngineCalc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EngineCalc ships an update every 2 months, Tech2 every 3 months. The most recent releases landed on September 21, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | EngineCalc | Tech2 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/enginecalc/id378824382/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | **60.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | **Free** |
| Size | 8 MB | 52 MB |
| Requires iOS | **6.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [iTrinity, Inc.](https://appshunter.io/developer/547108075) | [ECU=SHOP](https://appshunter.io/developer/1389703440) |

## What reviewers say

### EngineCalc

[App page](https://appshunter.io/ios/app/enginecalc/id378824382)

This utility app provides a collection of essential formulas and calculators for powersports and engine tuning. It allows users to perform complex calculations directly on their iPhone, eliminating the need for a laptop or desktop computer.

**Highlights:** Powersports formulas, Engine tuning calculators, Actual Volume Flow, Air Density, Compression Ratio, Cylinder Displacement, Volumetric Efficiency

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

**In-app purchases:** none


### Tech2

[App page](https://appshunter.io/ios/app/tech2/id6479217144)

This utility app offers real-time tuning and configuration for various operational modes. It provides advanced customization options for ignition timing, fuel, and compensation, along with anti-theft protection and analysis features.

**Highlights:** Real-time tuning, Anti-theft protection, Multiple operation modes, Injector tuning, Ignition timing tuning, BARO compensation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EngineCalc free?

EngineCalc costs $0.99, with no in-app purchases.

### Is Tech2 free?

Tech2 is free to download, with no in-app purchases.

### Do EngineCalc or Tech2 have ads?

Neither EngineCalc nor Tech2 shows ads.

### Which is updated more often, EngineCalc or Tech2?

EngineCalc ships an update every 2 months, and Tech2 every 3 months. Most recently, EngineCalc was updated on September 21, 2026 and Tech2 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.*