# Spark Systems vs Integral Rates

The clearest difference is update cadence: Integral Rates at weekly against Spark Systems's every 4 weeks. Integral Rates also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Spark Systems ships an update every 4 weeks, Integral Rates weekly. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Spark Systems | Integral Rates |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Weekly** |
| Size | 26 MB | 28 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Spark Systems Pte. Ltd.](https://appshunter.io/developer/1433658743) | [Integral](https://appshunter.io/developer/589239460) |

## What reviewers say

### Spark Systems

[App page](https://appshunter.io/ios/app/spark-systems/id1433658744)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Integral Rates

[App page](https://appshunter.io/ios/app/integral-rates/id6749907727)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Spark Systems free?

Spark Systems is free to download, with no in-app purchases.

### Is Integral Rates free?

Integral Rates is free to download, with no in-app purchases.

### Do Spark Systems or Integral Rates have ads?

Neither Spark Systems nor Integral Rates shows ads.

### Which is updated more often, Spark Systems or Integral Rates?

Spark Systems ships an update every 4 weeks, and Integral Rates weekly. Most recently, Spark Systems was updated on September 18, 2026 and Integral Rates on September 17, 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.*