# i know percent vs Sparky

i know percent and Sparky both sit at 4.8 stars, but that hides the real split: 76% of i know percent's written reviews are positive against 0% of Sparky's. i know percent also leads on chart position (#48 vs unranked) and iOS requirement (15.0 vs 17.0). Sparky's advantage is price (Free vs $0.79) and update cadence (weekly vs every 2 months). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Sparky is free to download; i know percent costs $0.79 up front. i know percent sells 1 in-app purchase, starting at $0.39 per month and Sparky sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for i know percent against 4.7 for Sparky. Both are backed by a comparable volume of ratings — 20 and 7 respectively. Written reviews are what separate them: 76% of i know percent's written reviews are positive against 0% of Sparky's.

i know percent ships an update every 2 months, Sparky weekly. The most recent releases landed on October 7, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | i know percent | Sparky |
| --- | --- | --- |
| Price | $0.79 | **Free** |
| Rating | **[4.8 (20 ratings)](https://appshunter.io/ios/app/i-know-percent/id1370838641/reviews)** | [4.7 (7 ratings)](https://appshunter.io/ios/app/sparky-subscriptions-tracker/id1524236599/reviews) |
| Number of ratings | **20** | 7 |
| Positive reviews | **76.5% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Subscription | **Free with in-app purchases** |
| Best chart rank | **#48** | — |
| Size | 1 MB | 13 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Dmitry Mashkin](https://appshunter.io/developer/1164457417) | [Ryan Rook](https://appshunter.io/developer/1524236601) |

## What reviewers say

### i know percent

[App page](https://appshunter.io/ios/app/i-know-percent/id1370838641)

**Currently charting:** #48 Top Paid · Finance (US App Store)

This finance app offers a streamlined interface for quick percentage calculations. It includes tools for finding percentages, calculating increases/decreases, and tracking cryptocurrency values, along with a currency converter.

**Highlights:** Real-time percentage calculations, Percentage increase/decrease, Calculate percentage of a number, Add/subtract percentages, Cryptocurrency value tracking, Currency converter

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Crypto Tracker Premium | $0.39 | per month |


### Sparky

[App page](https://appshunter.io/ios/app/sparky-subscriptions-tracker/id1524236599)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sparky + | $3.99 | one-time |


## Frequently asked questions

### Is i know percent free?

i know percent costs $0.79, and also offers in-app purchases.

### Is Sparky free?

Sparky is free to download, with in-app purchases available.

### Which has better reviews, i know percent or Sparky?

i know percent is rated higher. i know percent averages 4.8 out of 5 from 20 ratings, while Sparky averages 4.7 from 7 ratings.

### Do i know percent or Sparky have ads?

Neither i know percent nor Sparky shows ads.

### Which is updated more often, i know percent or Sparky?

i know percent ships an update every 2 months, and Sparky weekly. Most recently, i know percent was updated on October 7, 2026 and Sparky on September 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*