# Compounder - The Interest Tool — Compound interest calculations

> Compound interest calculations (iPhone/iPad app by NICHOLAS IAIN MULLEY.)

- Source: https://appshunter.io/ios/app/compounder-the-interest-tool/id6762137175 (this page in markdown: same URL + `.md`)
- Developer: [NICHOLAS IAIN MULLEY](https://appshunter.io/developer/1876974614)
- Category: Finance, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 14 MB
- Released: 2026-04-15
- Data updated: 2026-06-14
- User reviews in markdown: https://appshunter.io/ios/app/compounder-the-interest-tool/id6762137175/reviews.md

## What is Compounder?

Compounder — The Compound Interest Calculator

Compound interest is the most powerful force in personal finance. Compounder shows you exactly what it means for your money.

GROWTH CALCULATOR
Enter your starting balance, annual return rate, and how long you're investing. Add a periodic contribution and compound frequency to fine-tune the projection. Watch a number you recognise turn into one that doesn't feel real.

WITHDRAWAL CALCULATOR
Got a pot? Find out how long it lasts. Set a withdrawal amount, inflation rate, and frequency — and see the year your savings run out (or don't).

CHARTS & YEARLY VALUES
Visualise your growth curve or see every single year mapped out. Useful for planning. Mildly addictive for everyone else.

TERMINOLOGY GUIDE
Every field explained, clearly. No jargon, no assumptions.

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Compounder is free to use. Remove ads and help the developer with a one-time purchase to unlock the full experience.

Part of the FiHub app family — alongside Rewirement (in-depth retirement planning) and Stocker (simplified stock analysis).

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Compounder UK | $1.99 | one-time |



## Version history (last 5 releases)

### 1.5 — 2026-04-29

AdMob fixes

### 1.4 — 2026-04-26

Admob bug fixes

### 1.3 — 2026-04-18

• Updated preview images
• Improved ad experience for users in the UK, EU and Switzerland - you'll now be asked for your consent before personalised ads are shown
• Bug fixes and performance improvements

### 1.2 — 2026-04-17

UI UPDATES
Scroll behaviours tweaked throughout.

USEABILITY
Now available on devices from iOS 17 and above.

### 1.1 — 2026-04-16

UI UPDATE
Chart updates to show contribution vs projection amounts
Projection variation on charts

BUG FIX
Fixed broken ad integration

## More apps by NICHOLAS IAIN MULLEY

- [Rewirement](https://appshunter.io/ios/app/rewirement/id6759249806)
- [Stocker](https://appshunter.io/ios/app/stocker/id6760771862)

All apps by NICHOLAS IAIN MULLEY: https://appshunter.io/developer/1876974614

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-14.*