Support
Help with Chronoptica, and how to tell us about a date we got wrong.
Write to us
We read every message and reply in English or Thai. Tell us which device you use (for example, iPad Pro with iPadOS 26.1), what you did and what you expected to happen. A screenshot helps.
Report an error in a date
Accuracy is the point of Chronoptica, so we want to hear about any date, name or source you think is wrong.
- Open the item in the app and choose Copy Link. The link tells us exactly which item and which date you mean.
- Email the link to support@chronoptica.com with “Date correction” in the subject.
- Say what you think is wrong and, if you can, name a source: a book with its page, an article, or a museum or archive record.
A person checks every report against the sources. If the date needs to change, we correct it in a later update and tell you. Where historians genuinely disagree, the fix may be to add your source as another claim rather than to replace the date, because Chronoptica shows disputes instead of hiding them. If you would like to be credited for a correction, tell us the name to use.
Questions
Which devices does Chronoptica run on?
iPhone and iPad with iOS 26 or iPadOS 26 or later, Mac with macOS 26 or later, and Apple Vision Pro with visionOS 26 or later. It is one app: the same lanes, the same places in time and the same links on every device.
When can I download it?
Chronoptica is coming to the App Store and is not available to download yet. This page will link to it on the day it arrives.
Is it free?
Yes. The app and its core timelines are free, with no ads. Packs written and checked by historians and authors are coming later as optional in-app purchases through the App Store.
How do I use Chronoptica in Thai?
The app is in English and Thai and follows your device’s language. To use Thai for Chronoptica only, on iPhone or iPad open Settings › Apps › Chronoptica › Language. On Mac, open System Settings › General › Language & Region and add Chronoptica under Applications. Lane and item names are shown in Thai where a Thai name exists.
Can the dates use the Thai Buddhist Era?
Yes. The time ruler and the item details can show years in the Buddhist Era (BE), in the Common Era (CE), or both. For example, Bangkok’s founding in 1782 CE is 2325 BE.
Where do the dates come from?
Every item lists its sources. Tap an item to see its dates in words, how certain they are, each source with its basis, and a link to read more on Wikipedia. Well-known dates come from Wikidata and reputable references, and where historians disagree, each claim names the source it comes from.
Why does an item show more than one date?
Because historians disagree about it. Instead of picking one date and hiding the rest, Chronoptica shows every sourced claim and marks which one it draws as the main date. The Exodus, for example, has four dates, each from a different source. Approximate dates are drawn with soft, stippled edges and are marked “c.” for circa, and traditional dates are labeled “traditional”.
Does Chronoptica need an internet connection?
No. All the history in the app is on your device. You need a connection only to open a link to an outside site, such as Wikipedia.
Does it work with VoiceOver and larger text?
Yes. VoiceOver reads each lane and item with its dates in words, labels grow with your text size, and Reduce Motion turns off the animated reveals. If something is hard to reach or read, please tell us.
Do I need an account?
No. There is no account and nothing to sign in to. The app collects no data; see the privacy policy.
How do I restore purchases?
Paid packs are not available yet. When they arrive, they will be tied to your Apple Account, and the app will include a Restore Purchases button. Apple handles payments and refunds; to ask for a refund, visit reportaproblem.apple.com.