# Anna Powers vs Big Brain

The clearest difference is in-app purchases: Anna Powers at none against Big Brain's 6. Anna Powers also leads on ads (none vs shown). Big Brain's advantage is update cadence (weekly vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Big Brain sells 6 in-app purchases, starting at $1.99 per 7 days. Anna Powers asks for nothing beyond the download.

Anna Powers ships an update every 3 months, Big Brain weekly. The most recent releases landed on October 25, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Anna Powers | Big Brain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (1.5K ratings)](https://appshunter.io/ios/app/big-brain-ai-homework-helper/id6680155907/reviews)** |
| Number of ratings | — | **1.5K** |
| Positive reviews | — | 68.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | — | Subscription |
| Size | 10 MB | 38 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Emily Sudduth](https://appshunter.io/developer/1721274803) | [Tom Voitik](https://appshunter.io/developer/1766411564) |

## What reviewers say

### Anna Powers

[App page](https://appshunter.io/ios/app/anna-powers/id6479374685)

**In-app purchases:** none


### Big Brain

[App page](https://appshunter.io/ios/app/big-brain-ai-homework-helper/id6680155907)

Instantly solve homework problems by taking a photo. Get step-by-step explanations and personalized tutoring via chat. Access a history of all your solved problems across multiple math subjects.

**Highlights:** Photo homework scanning, Step-by-step explanations, AI-powered chat tutor, Problem history, Multi-subject math support

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro 1.99 | $1.99 | per 7 days |
| Pro Monthly 4.99 | $4.99 | per month |
| Weekly Pro 6.99 Trial | $6.99 | per 7 days |
| Pro Weekly 6.99 | $6.99 | per 7 days |
| Pro Monthly 9.99 | $9.99 | per month |
| Pro Yearly 29.99 | $29.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 💡 Helpful for classes
- 🚀 Quick responses

**What reviewers complain about**

- 🐛 Occasional bugs
- 💰 Paid subscription required

**Reported bugs**

- Incorrect test results
- Compatibility issues

**Requested features**

- More free features
- Improved accuracy


## Frequently asked questions

### Is Anna Powers free?

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

### Is Big Brain free?

Big Brain is free to download, with in-app purchases available.

### Do Anna Powers or Big Brain have ads?

Big Brain shows ads; Anna Powers does not.

### Which is updated more often, Anna Powers or Big Brain?

Anna Powers ships an update every 3 months, and Big Brain weekly. Most recently, Anna Powers was updated on October 25, 2026 and Big Brain on October 22, 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.*