# BrainFire AI vs Physics AI Solver

The clearest difference is update cadence: BrainFire AI at every 2 weeks against Physics AI Solver's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. BrainFire AI sells 3 in-app purchases, starting at $5.99 per 7 days and Physics AI Solver sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

BrainFire AI ships an update every 2 weeks, Physics AI Solver every 3 months. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | BrainFire AI | Physics AI Solver |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Size | 34 MB | 19 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sami Gundogan](https://appshunter.io/developer/1849654025) | [Yuri Milosh](https://appshunter.io/developer/1690168529) |

## What reviewers say

### BrainFire AI

[App page](https://appshunter.io/ios/app/brainfire-ai/id6757637163)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SynapseAI Premium | $5.99 | per 7 days |
| SynapseAI Premium | $29.99 | per month |
| SynapseAI Premium | $99.99 | per year |


### Physics AI Solver

[App page](https://appshunter.io/ios/app/physics-ai-solver-solvr/id6762401241)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SOLVR Premium Weekly | $3.99 | per 7 days |
| SOLVR Premium Monthly | $9.99 | per month |
| SOLVR Premium Yearly | $24.99 | per year |
| SOLVR Premium Yearly | $49.99 | per year |


## Frequently asked questions

### Is BrainFire AI free?

BrainFire AI is free to download, with in-app purchases available.

### Is Physics AI Solver free?

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

### Do BrainFire AI or Physics AI Solver have ads?

Neither BrainFire AI nor Physics AI Solver shows ads.

### Which is updated more often, BrainFire AI or Physics AI Solver?

BrainFire AI ships an update every 2 weeks, and Physics AI Solver every 3 months. Most recently, BrainFire AI was updated on October 9, 2026 and Physics AI Solver on October 2, 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.*