Comparison

Compound Interest Calc vs Sparky

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Compound Interest Calc

Calculate compounding interest with customizable options for term length, interest rate, and deposit frequency. View inflation-adjusted results and detailed amortization tables. Supports international currencies and saves all your data.

Highlights
  • Variable term length (years/months)
  • Customizable interest rate
  • Additional deposit options
  • Daily/Monthly/Quarterly/Yearly calculation
  • Inflation-adjusted results
  • Amortization table with email export
  • Supports international currencies
Features
Read full description

Quickly and easily calculate compounding interest with the following features: ●Universal app for iPad,iPhone,iPod touch. Pay once and use on any of your devices ●Variable length of Term in years or months ●Interest Rate ●Additional Deposits ●Interest Calculation Daily/Monthly/Quarterly or Yearly ●Inflation adjusted results ●Touch plot point on chart to view amount ●Amortization table, which data can be emailed ●Supports International Currencies ●All values saved and reloaded on startup. ●Variable inflation rate Purchase this app today!

About

Sparky

Effortlessly track all your subscriptions and recurring expenses with a clear overview of your finances. This app helps you visualize spending, manage monthly outlays, and make informed decisions to achieve your financial goals faster.

Highlights
  • Visualize subscriptions and expenses
  • Track recurring costs
  • Manage monthly outlays
  • Calculate remaining funds
  • Simplify expense adding
  • Gain financial control
Read full description

Discover financial peace of mind with Sparky - your ultimate companion for effortlessly tracking subscriptions and recurring expenses! # Visualize Your Finances at a Glance Unveil a crystal-clear overview of your subscriptions and recurring expenses with Sparky. Our sleek interface presents your financial commitments in an easily comprehensible format. Gain full control over your monthly outlays and pave the way for substantial savings. # Simplicity in Adding Subscriptions and Recurring Expenses Sparky simplifies your financial management. Just provide titles, amounts, and appearance for your subscriptions and recurring expenses, and let Sparky take care of the rest. No more hassle, no more fuss – just efficiency. # Empower Your Spending Decisions Reimagine your budgeting capabilities with Sparky. By intelligently calculating your remaining funds after covering your monthly expenses, Sparky grants you the confidence to make informed spending choices. Achieve your financial goals faster than ever. Ready to take charge of your financial journey? Download Sparky - Expense Tracker today and embrace a future of financial prosperity.

Screenshots

Compound Interest Calc2 screens
Sparky4 screens

Verdict

The call

Compound Interest Calc and Sparky both sit at 4.6 stars, but that hides the real split: 54% of Compound Interest Calc's written reviews are positive against 0% of Sparky's. Compound Interest Calc also leads on in-app purchases (none vs 1) and iOS requirement (9.0 vs 17.0). Sparky's advantage is price (Free vs $1.99) and update cadence (weekly vs every 8 months). On rating, ratings volume, ads and 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

CostPrice · In-app purchases · Ads · Monetization

Sparky is free to download; Compound Interest Calc costs $1.99 up front. Sparky sells 1 one-off in-app purchase. Compound Interest Calc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Compound Interest Calc against 4.7 for Sparky. Both are backed by a comparable volume of ratings — 19 and 7 respectively. Written reviews are what separate them: 54% of Compound Interest Calc's written reviews are positive against 0% of Sparky's.

UpkeepUpdate frequency

Compound Interest Calc ships an update every 8 months, Sparky weekly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
Compound Interest Calc versus Sparky: the parameters behind the verdict, then further details
ParameterCompound Interest CalcSparky
Price$1.99Free — better
Rating4.6 (19 ratings)4.7 (7 ratings) — better
Positive reviews54.2% of reviews — better0.0% of reviews
Number of ratings19 — better7
Update frequencyEvery 8 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Vision Pro — better
Requires iOS9.0 — better17.0
Further details — not scored
Size5 MB13 MB
Age rating4+4+
DeveloperMobile and Database SolutionsRyan Rook

Customer experience

Compound Interest Calc

All ratings19 ratings
Positive89.5%
Neutral5.3%
Negative5.3%
Written reviews24 reviews
Positive54.2%
Neutral8.3%
Negative37.5%

Sparky

All ratings7 ratings
Positive85.7%
Neutral14.3%
Negative0.0%
Written reviews2 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

None

Compound Interest Calc

No in-app purchases

1 purchases

Sparky

One-time1
  • Sparky +$3.99

Questions

Is Compound Interest Calc free?
Compound Interest Calc costs $1.99, with no in-app purchases.
Is Sparky free?
Sparky is free to download, with in-app purchases available.
Which has better reviews, Compound Interest Calc or Sparky?
Sparky is rated higher. Compound Interest Calc averages 4.6 out of 5 from 19 ratings, while Sparky averages 4.7 from 7 ratings.
Do Compound Interest Calc or Sparky have ads?
Neither Compound Interest Calc nor Sparky shows ads.
Which is updated more often, Compound Interest Calc or Sparky?
Compound Interest Calc ships an update every 8 months, and Sparky weekly. Most recently, Compound Interest Calc was updated on November 6, 2026 and Sparky on November 3, 2026.

Other comparisons