# Amount Ruler

> Amount Ruler (iPhone/iPad app by Maurizio Todeschi.)

- Source: https://appshunter.io/ios/app/amount-ruler/id1570022565 (this page in markdown: same URL + `.md`)
- Developer: [Maurizio Todeschi](https://appshunter.io/developer/1438390757)
- Category: Finance, Education
- Price: $1.99 (on sale, was $2.99)
- Age rating: 4+
- Requires: iOS 18.5 · 1 MB
- Languages: English, Italian
- Released: 2021-08-29
- Data updated: 2026-07-01
- User reviews in markdown: https://appshunter.io/ios/app/amount-ruler/id1570022565/reviews.md

## What is Amount Ruler?

- Calculate all the variables in the compound interest formula, each as a function of the others. You can calculate the final value, initial principal, interest rate, term, and any periodic deposits.
- The capitalization frequency can be: monthly, bimonthly, quarterly, four-monthly, half-yearly and annually.
- The investment is a one-time payment and entitles you to all future updates.
- Cross-platform app, once purchased for one device it is free for all the others, for example, once downloaded for iPhone you can also download it for free for Mac and iPad.
- Variable values ​​can be conveniently set by dragging sliders or typing them using a numeric keypad. The new value of the variable being calculated is updated in real time.
- In list or section detail mode, you can view the value of the variables at each time point. For example, the value of the amount or accumulated interest after one year, three years and three months, twenty years and six months, etc.
- The trend of variables over time can also be displayed graphically.
- Standalone, independent of networks.

Available in Italian and English.


## Version history (last 5 releases)

### 1.2.0 — 2026-06-28

Completely  rewritten in SwiftUI. Amount Ruler now has evolved into "Compound Interest Pro"!

### 1.0.16 — 2025-01-23

maintenance release.

### 1.0.9 — 2021-11-07

small UI fixes and added more messages for user in case of corner cases.

### 1.0.8 — 2021-11-01

improve performance and interface

### 1.0.7 — 2021-10-24

fixed UI and many small enhancements.

## More apps by Maurizio Todeschi

- [Loans Ruler](https://appshunter.io/ios/app/loans-ruler/id1610920151)

All apps by Maurizio Todeschi: https://appshunter.io/developer/1438390757

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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 2026-07-01.*