# Smart Solution vs Diamondback Sizing Calculator

The clearest difference is update cadence: Smart Solution at every 4 weeks against Diamondback Sizing Calculator's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Smart Solution ships an update every 4 weeks, Diamondback Sizing Calculator every 5 months. The most recent releases landed on September 8, 2026 and May 18, 2026 respectively.

## The numbers

| Metric | Smart Solution | Diamondback Sizing Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 5 months |
| Size | 23 MB | 46 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ISUNG Co., Ltd](https://appshunter.io/developer/1326754334) | [CB Supplies Ltd.](https://appshunter.io/developer/1645869774) |

## What reviewers say

### Smart Solution

[App page](https://appshunter.io/ios/app/smart-solution/id1474913080)

**Features:** macOS Compatibility

**In-app purchases:** none


### Diamondback Sizing Calculator

[App page](https://appshunter.io/ios/app/diamondback-sizing-calculator/id1645869772)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Smart Solution free?

Smart Solution is free to download, with no in-app purchases.

### Is Diamondback Sizing Calculator free?

Diamondback Sizing Calculator is free to download, with no in-app purchases.

### Do Smart Solution or Diamondback Sizing Calculator have ads?

Neither Smart Solution nor Diamondback Sizing Calculator shows ads.

### Which is updated more often, Smart Solution or Diamondback Sizing Calculator?

Smart Solution ships an update every 4 weeks, and Diamondback Sizing Calculator every 5 months. Most recently, Smart Solution was updated on September 8, 2026 and Diamondback Sizing Calculator on May 18, 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.*