# Opti vs Compound Interest

The clearest difference is update cadence: Opti at weekly against Compound Interest's every 4 months. Opti also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Opti ships an update weekly, Compound Interest every 4 months. The most recent releases landed on September 9, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Opti | Compound Interest |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 4 months |
| Size | 49 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [TORR.O](https://appshunter.io/developer/1870573147) | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) |

## What reviewers say

### Opti

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

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

**In-app purchases:** none


### Compound Interest

[App page](https://appshunter.io/ios/app/compound-interest-calculator/id6772256280)

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

**In-app purchases:** none


## Frequently asked questions

### Is Opti free?

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

### Is Compound Interest free?

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

### Do Opti or Compound Interest have ads?

Neither Opti nor Compound Interest shows ads.

### Which is updated more often, Opti or Compound Interest?

Opti ships an update weekly, and Compound Interest every 4 months. Most recently, Opti was updated on September 9, 2026 and Compound Interest 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.*