# Physics AI Problem Solver vs Eva & Bob

The clearest difference is in-app purchases: Eva & Bob at none against Physics AI Problem Solver's 4. Eva & Bob also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Physics AI Problem Solver sells 3 in-app purchases, starting at $9.99 per 7 days. Eva & Bob asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Physics AI Problem Solver | Eva & Bob |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (6 ratings)](https://appshunter.io/ios/app/physics-ai-problem-solver/id6755072097/reviews)** | — |
| Number of ratings | **6** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 56 MB | 68 MB |
| Requires iOS | **15.3** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MOLIBE APLICACIONES SL](https://appshunter.io/developer/1635043428) | [Etoiles Academy](https://appshunter.io/developer/1855582178) |

## What reviewers say

### Physics AI Problem Solver

[App page](https://appshunter.io/ios/app/physics-ai-problem-solver/id6755072097)

Instantly solve physics problems with AI-powered step-by-step explanations. Scan equations or input them manually to understand concepts faster, ideal for high school and college students.

**Highlights:** Scan physics problems with camera, Instant step-by-step solutions, Covers major physics topics, Manual input option, Automatic history tracking, AI-powered explanations

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited | $9.99 | per 7 days |
| Unlimited | $19.99 | per month |
| Unlimited | $29.99 | per year |


### Eva & Bob

[App page](https://appshunter.io/ios/app/eva-and-bob/id6755689666)

**In-app purchases:** none


## Frequently asked questions

### Is Physics AI Problem Solver free?

Physics AI Problem Solver is free to download, with in-app purchases available.

### Is Eva & Bob free?

Eva & Bob is free to download, with no in-app purchases.

### Do Physics AI Problem Solver or Eva & Bob have ads?

Physics AI Problem Solver shows ads; Eva & Bob does not.

### Which is updated more often, Physics AI Problem Solver or Eva & Bob?

Physics AI Problem Solver ships an update every 2 months, and Eva & Bob every 2 months. Most recently, Physics AI Problem Solver was updated on October 24, 2026 and Eva & Bob on October 28, 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.*