# Chronograph vs ChromaChecker Nano

The clearest difference is in-app purchases: ChromaChecker Nano at none against Chronograph's 3. Chronograph's advantage is update cadence (every 16 months vs every 40 months) and iOS requirement (11.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Chronograph sells 3 one-off in-app purchases. ChromaChecker Nano asks for nothing beyond the download.

Chronograph ships an update every 16 months, ChromaChecker Nano every 40 months. The most recent releases landed on September 16, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Chronograph | ChromaChecker Nano |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 16 months** | Every 40 months |
| Size | 98 MB | 37 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [App Dev Academy Ltd.](https://appshunter.io/developer/1281918813) | [Colorix SA](https://appshunter.io/developer/372237429) |

## What reviewers say

### Chronograph

[App page](https://appshunter.io/ios/app/chronograph/id1281918814)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium for 90 days | $5.99 | one-time |
| Premium for 180 days | $11.99 | one-time |
| Premium for 365 days | $23.99 | one-time |


### ChromaChecker Nano

[App page](https://appshunter.io/ios/app/chromachecker-nano/id1521295739)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chronograph free?

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

### Is ChromaChecker Nano free?

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

### Do Chronograph or ChromaChecker Nano have ads?

Neither Chronograph nor ChromaChecker Nano shows ads.

### Which is updated more often, Chronograph or ChromaChecker Nano?

Chronograph ships an update every 16 months, and ChromaChecker Nano every 40 months. Most recently, Chronograph was updated on September 16, 2026 and ChromaChecker Nano on September 14, 2026.

---

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