# Дельта vs PhysicsLab

The clearest difference is review sentiment: PhysicsLab at 100% against Дельта's 0%. PhysicsLab also leads on price (Free vs $3.99). Дельта's advantage is ads (none vs shown). On update cadence, in-app purchases, device support and iOS requirement there is nothing between them.

PhysicsLab is free to download; Дельта costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Дельта ships an update every 4 months, PhysicsLab every 3 months. The most recent releases landed on October 2, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Дельта | PhysicsLab |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/2026/id1551858713/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 78 MB | 33 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrey Andreyev](https://appshunter.io/developer/1418253369) | [Anas Abubakar](https://appshunter.io/developer/1581534101) |

## What reviewers say

### Дельта

[App page](https://appshunter.io/ios/app/2026/id1551858713)

Prepare for maritime certification exams with this test simulator. It includes official questions and answers for qualified and watchkeeping sailors, covering safety, navigation, cargo operations, and environmental protection. Work offline and use the built-in search.

**Highlights:** Official exam questions and answers, Covers safety, navigation, and cargo, Offline functionality, Built-in search, Preparation for Convention Plus 3.0

**Features:** macOS Compatibility

**In-app purchases:** none


### PhysicsLab

[App page](https://appshunter.io/ios/app/physicslab-calculator-lite/id1587705682)

This app helps students, teachers, and science enthusiasts calculate, understand, and visualize physics concepts. It offers calculators, simulations, worked problems, and clear explanations for various physics topics, making learning more accessible.

**Highlights:** Physics calculators for common problems, Interactive physics simulations, Worked problems with clear steps, Organized physics formulas by topic, Simple explanations for concepts, Unit conversion tools

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

**In-app purchases:** none


## Frequently asked questions

### Is Дельта free?

Дельта costs $3.99, with no in-app purchases.

### Is PhysicsLab free?

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

### Do Дельта or PhysicsLab have ads?

PhysicsLab shows ads; Дельта does not.

### Which is updated more often, Дельта or PhysicsLab?

Дельта ships an update every 4 months, and PhysicsLab every 3 months. Most recently, Дельта was updated on October 2, 2026 and PhysicsLab on September 27, 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.*