# iCalibration vs DB One

The clearest difference is in-app purchases: iCalibration at none against DB One's 4. iCalibration also leads on iOS requirement (11.0 vs 16.6). DB One's advantage is update cadence (every 3 days vs every 4 weeks). On price, ads and device support there is nothing between them.

Both are free to download. DB One sells 4 in-app purchases, starting at $29.99 per month. iCalibration asks for nothing beyond the download.

iCalibration ships an update every 4 weeks, DB One every 3 days. The most recent releases landed on September 20, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | iCalibration | DB One |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 days** |
| Size | 54 MB | 10 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ICARVISIONS(SHENZHEN) TECHNOLOGY CO.,LTD](https://appshunter.io/developer/1500826371) | [黎明 卿](https://appshunter.io/developer/1800364766) |

## What reviewers say

### iCalibration

[App page](https://appshunter.io/ios/app/icalibration/id6450919217)

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

**In-app purchases:** none


### DB One

[App page](https://appshunter.io/ios/app/db-one-click-deploydbdeploy/id6745581156)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pay monthly | $29.99 | per month |
| Pay yearly | $299.99 | per year |
| Pay Per Use | $14.99 | one-time |
| Perpetual License | $699.99 | one-time |


## Frequently asked questions

### Is iCalibration free?

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

### Is DB One free?

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

### Do iCalibration or DB One have ads?

Neither iCalibration nor DB One shows ads.

### Which is updated more often, iCalibration or DB One?

iCalibration ships an update every 4 weeks, and DB One every 3 days. Most recently, iCalibration was updated on September 20, 2026 and DB One on October 10, 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.*