# Chronos Notes vs Claydeck UPSC

The clearest difference is price: Claydeck UPSC at Free against Chronos Notes's $0.99. Claydeck UPSC also leads on update cadence (every 3 weeks vs every 9 months). Chronos Notes's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

Claydeck UPSC is free to download; Chronos Notes costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Chronos Notes ships an update every 9 months, Claydeck UPSC every 3 weeks. The most recent releases landed on September 26, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Chronos Notes | Claydeck UPSC |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/chronos-notes/id687105675/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 6 MB | 67 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jan-Wouter Arendsen](https://appshunter.io/developer/432769119) | [ArcTech Labs Private Ltd](https://appshunter.io/developer/1701371834) |

## What reviewers say

### Chronos Notes

[App page](https://appshunter.io/ios/app/chronos-notes/id687105675)

Organize historical notes and events into a visual, chronological timeline. Create timelines for any historical period or event, navigate through them, and use tags for easy searching and filtering.

**Highlights:** Chronological timeline creation, Organize notes by date, Navigate via timeline or event list, Tagging for easy filtering, Search historical events

**Features:** macOS Compatibility

**In-app purchases:** none


### Claydeck UPSC

[App page](https://appshunter.io/ios/app/claydeck-upsc/id6740053625)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chronos Notes free?

Chronos Notes costs $0.99, with no in-app purchases.

### Is Claydeck UPSC free?

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

### Do Chronos Notes or Claydeck UPSC have ads?

Claydeck UPSC shows ads; Chronos Notes does not.

### Which is updated more often, Chronos Notes or Claydeck UPSC?

Chronos Notes ships an update every 9 months, and Claydeck UPSC every 3 weeks. Most recently, Chronos Notes was updated on September 26, 2026 and Claydeck UPSC on September 30, 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.*