# WattWise Savings App vs Crystal Byte

The clearest difference is in-app purchases: Crystal Byte at none against WattWise Savings App's 1. WattWise Savings App's advantage is update cadence (every 3 days vs weekly) and iOS requirement (15.1 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. WattWise Savings App sells 1 one-off in-app purchase. Crystal Byte asks for nothing beyond the download.

WattWise Savings App ships an update every 3 days, Crystal Byte weekly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | WattWise Savings App | Crystal Byte |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Weekly |
| Size | 48 MB | 43 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Whoa Bro, LLC](https://appshunter.io/developer/1888230279) | [Ethan John Rodriguez](https://appshunter.io/developer/6790647326) |

## What reviewers say

### WattWise Savings App

[App page](https://appshunter.io/ios/app/wattwise-savings-app/id6767918997)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Watt Wise Pro Unlock | $0.99 | one-time |


### Crystal Byte

[App page](https://appshunter.io/ios/app/crystal-byte/id6790647324)

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

**In-app purchases:** none


## Frequently asked questions

### Is WattWise Savings App free?

WattWise Savings App is free to download, with in-app purchases available.

### Is Crystal Byte free?

Crystal Byte is free to download, with no in-app purchases.

### Do WattWise Savings App or Crystal Byte have ads?

Neither WattWise Savings App nor Crystal Byte shows ads.

### Which is updated more often, WattWise Savings App or Crystal Byte?

WattWise Savings App ships an update every 3 days, and Crystal Byte weekly. Most recently, WattWise Savings App was updated on October 25, 2026 and Crystal Byte on October 28, 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.*