# Decision Lab vs CompoundFX

The clearest difference is in-app purchases: Decision Lab at none against CompoundFX's 1. Decision Lab also leads on update cadence (every 3 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CompoundFX sells 1 one-off in-app purchase. Decision Lab asks for nothing beyond the download.

Decision Lab ships an update every 3 days, CompoundFX every 2 months. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Decision Lab | CompoundFX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 months |
| Size | 6 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Cheng-Hsien Han](https://appshunter.io/developer/1887916585) | [Origin Software, Inc.](https://appshunter.io/developer/1895882631) |

## What reviewers say

### Decision Lab

[App page](https://appshunter.io/ios/app/decision-lab-life-calculator/id6761129170)

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

**In-app purchases:** none


### CompoundFX

[App page](https://appshunter.io/ios/app/compoundfx-compound-interest/id6764695879)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CompoundFX Pro | $4.99 | one-time |


## Frequently asked questions

### Is Decision Lab free?

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

### Is CompoundFX free?

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

### Do Decision Lab or CompoundFX have ads?

Neither Decision Lab nor CompoundFX shows ads.

### Which is updated more often, Decision Lab or CompoundFX?

Decision Lab ships an update every 3 days, and CompoundFX every 2 months. Most recently, Decision Lab was updated on October 25, 2026 and CompoundFX on October 31, 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.*