# UnderstandStock vs Opti

The clearest difference is in-app purchases: Opti at none against UnderstandStock's 1. Opti also leads on iOS requirement (15.1 vs 17.6). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. UnderstandStock sells 1 in-app purchase, starting at $19.99 per month. Opti asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for UnderstandStock against 5.0 for Opti. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | UnderstandStock | Opti |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/understandstock/id6476131880/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/opti-view/id6758307202/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Freemium | — |
| Size | 36 MB | 49 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Melvin Ram](https://appshunter.io/developer/1725937176) | [TORR.O](https://appshunter.io/developer/1870573147) |

## What reviewers say

### UnderstandStock

[App page](https://appshunter.io/ios/app/understandstock/id6476131880)

Explore stock market data with clarity and simplicity. Access 30 years of financial history and visualize trends with interactive charts. Gain insights to make informed investment decisions.

**Highlights:** Simple stock research, 30 years of financial data, Interactive charts, Clear data visualization, Informed investment decisions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UnderstandStock Pro | $19.99 | per month |


### Opti

[App page](https://appshunter.io/ios/app/opti-view/id6758307202)

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

**In-app purchases:** none


## Frequently asked questions

### Is UnderstandStock free?

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

### Is Opti free?

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

### Which has better reviews, UnderstandStock or Opti?

UnderstandStock and Opti are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do UnderstandStock or Opti have ads?

Neither UnderstandStock nor Opti shows ads.

### Which is updated more often, UnderstandStock or Opti?

UnderstandStock ships an update weekly, and Opti weekly. Most recently, UnderstandStock was updated on October 10, 2026 and Opti on October 25, 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.*