Compound Interest Calc + vs Invest with Knowledge!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Compound Interest Calc +
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.
- 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
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Compound Interest Calc + is the best app for quickly calculating compound interest and the future value of investments. Compound Interest Calc + features: · support for starting principal, interest, duration, inflation and additional deposits · support for additions to be made at the beginning or end of the period · daily, weekly, bi-weekly, monthly, bi-monthly, quarterly, semi-annual and annual compound frequency and additions frequency options · results that include final balance, inflation adjusted, total interest and total additions · PDF and CSV (Excel or Numbers) export options · saving of calculations for viewing later · comparing the results of saved calculations · a complete amortization schedule · a beautifully designed interface · available in English, French, and Spanish! I love feedback! I want this app to work for you. Let me know if you’d like to see any additional features or if something is not quite working correctly. You can submit feedback right from within the app.
Invest with Knowledge!
This app helps users find undervalued stocks based on business fundamentals, inspired by Benjamin Graham's teachings. It provides weekly stock picks, an archive of past recommendations with performance data, and a practice portfolio feature.
- Find undervalued stocks
- Weekly stock picks
- Archive of past recommendations
- Practice portfolio
- Performance data tracking
- Stock search by name/ticker
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Most people buy a stock because of a hunch or a tip. Invest With Knowledge! is a tool for people who care about the business behind the stock. Built on the teachings of Benjamin Graham, Invest with Knowledge! helps you find real value. Each week, check out the new "Fave," a high quality business trading at a bargain price. Browse the full archive of past picks with up-to-date performance data, search stocks by name or ticker, create your own practice portfolio, and get notified when important things change. Whether you're new to investing or a seasoned value hunter, Invest With Knowledge helps you make high quality, data driven decisions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: Invest with Knowledge! at 100% against Compound Interest Calc +'s 36%. Invest with Knowledge! also leads on price (Free vs $2.99) and rating (5.0 vs 4.8). Compound Interest Calc +'s advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Invest with Knowledge! is free to download; Compound Interest Calc + costs $2.99 up front. Invest with Knowledge! sells 1 in-app purchase, starting at $0.99 per month. Compound Interest Calc + asks for nothing beyond the download.
Invest with Knowledge! holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Compound Interest Calc + has 35 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 36% of Compound Interest Calc +'s written reviews are positive against 100% of Invest with Knowledge!'s.
Compound Interest Calc + ships an update fortnightly, Invest with Knowledge! monthly. The most recent releases landed on October 26, 2026 and October 6, 2026 respectively.
| Parameter | Compound Interest Calc + | Invest with Knowledge! |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.8 (35 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 36.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 35 — better | 3 |
| Update frequency | Fortnightly — better | Monthly |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 1 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Adam Fahlman | JOSIAH DAVID SWANSON |
Customer experience
Compound Interest Calc +
Invest with Knowledge!
In-app purchases
Compound Interest Calc +
No in-app purchases
Invest with Knowledge!
- I.W.K. Pro14 Days trial$0.991 Month
Questions
Is Compound Interest Calc + free?
Is Invest with Knowledge! free?
Which has better reviews, Compound Interest Calc + or Invest with Knowledge!?
Do Compound Interest Calc + or Invest with Knowledge! have ads?
Which is updated more often, Compound Interest Calc + or Invest with Knowledge!?
Other comparisons
