# Compound Interest Calc + vs Compound Interest App

The clearest difference is price: Compound Interest App at Free against Compound Interest Calc +'s $2.99. Compound Interest Calc +'s advantage is in-app purchases (none vs 3) and update cadence (fortnightly vs every 8 months). On ads and device support there is nothing between them.

Compound Interest App is free to download; Compound Interest Calc + costs $2.99 up front. Compound Interest App sells 3 in-app purchases, starting at $1.99 per month. Compound Interest Calc + asks for nothing beyond the download.

Compound Interest Calc + ships an update fortnightly, Compound Interest App every 8 months. The most recent releases landed on September 14, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Compound Interest Calc + | Compound Interest App |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.8 (34 ratings)](https://appshunter.io/ios/app/compound-interest-calc-plus/id1360950679/reviews)** | — |
| Number of ratings | **34** | — |
| Positive reviews | 36.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 8 months |
| Monetization | Paid | — |
| Size | 1 MB | 15 MB |
| Requires iOS | **13.0** | 17.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Adam Fahlman](https://appshunter.io/developer/974051920) | [Polydez](https://appshunter.io/developer/1683312256) |

## What reviewers say

### Compound Interest Calc +

[App page](https://appshunter.io/ios/app/compound-interest-calc-plus/id1360950679)

Calculate compound interest and future investment values with various parameters like principal, interest rate, and additional deposits. Export results to PDF or CSV and compare saved calculations.

**Highlights:** Compound interest calculation, Future value projection, Support for principal, interest, duration, inflation, and deposits, Flexible compounding and deposit frequencies, Detailed results including inflation-adjusted balance, PDF and CSV export, Save and compare calculations

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

**In-app purchases:** none


### Compound Interest App

[App page](https://appshunter.io/ios/app/compound-interest-app/id6480404592)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Compoundify Pro - Monthly Plan | $1.99 | per month |
| Compoundify Pro - Yearly Plan | $4.99 | per year |
| Compoundify Pro | $9.99 | one-time |


## Frequently asked questions

### Is Compound Interest Calc + free?

Compound Interest Calc + costs $2.99, with no in-app purchases.

### Is Compound Interest App free?

Compound Interest App is free to download, with in-app purchases available.

### Do Compound Interest Calc + or Compound Interest App have ads?

Neither Compound Interest Calc + nor Compound Interest App shows ads.

### Which is updated more often, Compound Interest Calc + or Compound Interest App?

Compound Interest Calc + ships an update fortnightly, and Compound Interest App every 8 months. Most recently, Compound Interest Calc + was updated on September 14, 2026 and Compound Interest App on September 19, 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.*