Report updated Apr 7, 2026
Compound Interest - Compounder
v1.3.1Individuals interested in personal finance, retirement planning, and long-term wealth building who want a simple, visual tool to model compound interest scenarios.
What Is Compound Interest - Compounder?
Launched Mar 28, 2019
Updated Sep 2025
What users think iIndependent intel reports to help builders create better apps or enhance existing ones. Still in beta, accuracy and relevancy get better every day. For informational purposes only.
What does it look like?
What are the key features?
Ability to link one calculation tab's balance to another for complex, multi-stage financial modeling
Solve for required contribution, return rate, or time frame to reach a specific financial target
Graphs that break down investment gains and growth year by year
Create multiple tabs to test and compare different saving strategies side-by-side
What do users think? iIndependent intel reports to help builders create better apps or enhance existing ones. Still in beta, accuracy and relevancy get better every day. For informational purposes only.
“Recent user voice shows a excited sentiment. Users appreciate ease of use and design and core functionality, but report excessive advertising and feature requests.”
What Users Love
Beautiful UI, clean, and just overall nice to use
Designed in a way that makes it too hard for you to get lost
Works good for quick calculations
Looks the best out of many ive tried
Pain Points
Too much ads! For every touch on screen.
Huge full screen video ad before I even open the app
Would be good to have weekly interest calculation too.
Wish I could enter length in months in addition to years.
High confidence · 6.2K reviews available
How is it ranked?
| Chart | Rank | Change |
|---|---|---|
| Paid | #72 | ▼29 |
What are the pros and cons?
Pros
- Clean, intuitive UI/UX that simplifies complex math
- Advanced multi-stage modeling via tab linking
- Strong 4.7-star user rating and trust
- Reverse-calculation logic for goal setting
Cons
- Aggressive full-screen ads on Android causing churn
- Lack of weekly/monthly calculation granularity
- Declining chart position in the US Paid category
- No external brand presence (website/social)
What is the market outlook?
Growth Opportunities
- Introduce ad-free premium tier on Android
- Add custom tab naming and cloud saving
- Expand to include debt payoff and mortgage modules
- In-app educational content to drive engagement
Market Threats
- Newer competitors with high-polish, modern UIs
- Established all-in-one financial suites (EZ Financial)
- Continued rank decay in the App Store
Who competes with Compound Interest - Compounder?
The Nemesis
Deposit - compound interest calculator with periodic additions and withdrawals
Iaroslav Mironov
Directly mirrors the core functionality of visualizing year-by-year investment growth with interactive charts and scenario planning.
Directly mirrors the core functionality of visualizing year-by-year investment growth with interactive charts and scenario planning.
Contenders
EZ Financial Calculators
★4.4 (47)Bishinew Incorporated
A dominant utility suite that includes the same 'solve for' reverse calculation logic for financial targets.
A dominant utility suite that includes the same 'solve for' reverse calculation logic for financial targets.
EZ Financial Calculators Pro
★4.6 (275)Bishinew Incorporated
Offers a comprehensive set of financial tools with a strong emphasis on investment and compound interest modules.
Offers a comprehensive set of financial tools with a strong emphasis on investment and compound interest modules.
Financial Calculator Pro
Jaydip Jethva
A professional-grade calculator that overlaps with the advanced financial modeling and multi-stage calculation features.
A professional-grade calculator that overlaps with the advanced financial modeling and multi-stage calculation features.
Karl's Mortgage Calculator
★4.4 (116)Karl Jeacle
While mortgage-focused, its investment and compound interest tools are the gold standard for financial math accuracy on mobile.
While mortgage-focused, its investment and compound interest tools are the gold standard for financial math accuracy on mobile.
New Kids on the Block
Compound Interest Calc
Mobile and Database Solutions
A newer entry with a modern, sleek UI designed to make compound interest calculations more accessible to younger users.
A newer entry with a modern, sleek UI designed to make compound interest calculations more accessible to younger users.
What are the key takeaways?
Compound Interest - Compounder is a exciting finance app that is free with in-app purchases. With a 4.7/5 rating from 6.2K reviews, it excites its users from users. Users particularly appreciate ease of use and design, though excessive advertising remains a common concern.
Best for: Individuals interested in personal finance, retirement planning, and long-term wealth building who want a simple, visual tool to model compound interest scenarios.
How much does it cost?
Model: freemium
The developer uses a platform-specific strategy: a low-cost premium model on iOS to capture high-intent users and a free, ad-supported model on Android for maximum reach.
iOS Version
1.3.1
Android Version
1.2.4
Release Date
Mar 28, 2019
iOS Price
$0.99
Android Price
Free