---
title: "TerraChron 9 - Reviews, Revenue and Downloads in Vietnam | Apple App Store"
description: "TerraChron 9 is an offline Grade 9 History & Geography Study Studio. Each session ends with a saved Notebook artifact in the learner’s own words (with v1/v2 revisions) and a calm Daily Passport check-"
---

# TerraChron 9 — Vietnam
> Passport Study Studio

![TerraChron 9 App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/70/81/8c/70818cbb-f8e7-8d32-e067-4c87876ac6c1/AppIcon-0-0-1x_U007emarketing-0-11-0-85-220.png/434x0w.png)

**Developer:** [Unknown](https://apptail.io/developer/unknown-EJdvzb)
**Category:** Education
**Rating:** N/A (0 ratings)
**Price:** Free
**Bundle ID:** com.terrachron9.app
**Store:** Apple App Store
**Country:** Vietnam
**Version:** 1.0.0 (released 2026-01-11)
**Original Release:** 2026-01-11
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/vn/app/app/id6757675735)
**AppTail Page:** [https://apptail.io/app/terrachron-9-oXoy/vietnam](https://apptail.io/app/terrachron-9-oXoy/vietnam)

## TerraChron 9 Description
TerraChron 9 is an offline Grade 9 History & Geography Study Studio. Each session ends with a saved Notebook artifact in the learner’s own words (with v1/v2 revisions) and a calm Daily Passport check-in. Use the Atlas for short theory, key terms, and text-only timelines or place/climate facts, then complete guided Studio Runs with self-check and reflection. Review Lab builds focus sets from local mix-ups and saves Revision Cards for later review.

## TerraChron 9 Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/0b/7f/4b/0b7f4bb5-83a1-b26c-128d-bc1699a87ad7/Simulator_Screenshot_-_iPhone_17_PM-1_-_2026-01-11_at_21.53.56.png/1320x2868.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/3d/cb/c0/3dcbc044-90d6-b6e7-0fff-22da5b5f870a/Simulator_Screenshot_-_iPhone_17_PM-1_-_2026-01-11_at_21.54.47.png/1320x2868.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/e7/69/8f/e7698f91-23af-0fdc-66c5-545c92248a5f/Simulator_Screenshot_-_iPhone_17_PM-1_-_2026-01-11_at_21.54.44.png/1320x2868.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/8b/ce/48/8bce4811-2daf-4508-d4ce-27173497abb9/Simulator_Screenshot_-_iPhone_17_PM-1_-_2026-01-11_at_21.54.39.png/1320x2868.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/d2/0a/ab/d20aab75-8dd0-281d-1353-6af071cf5981/Simulator_Screenshot_-_iPhone_17_PM-1_-_2026-01-11_at_21.54.04.png/1320x2868.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/79/3b/8f/793b8f26-315f-83a8-ac7d-9d0dc79b0c28/Simulator_Screenshot_-_iPhone_17_PM-1_-_2026-01-11_at_21.54.33.png/1320x2868.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/05/c0/a6/05c0a618-8b4f-bbf7-0ead-c16313fff130/Simulator_Screenshot_-_iPhone_17_PM-1_-_2026-01-11_at_21.54.49.png/1320x2868.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/b4/b0/14/b4b01461-c5f1-f840-9d96-097a124aa7ec/Simulator_Screenshot_-_iPhone_17_PM-1_-_2026-01-11_at_21.54.51.png/1320x2868.png)
- [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/7c/e7/0e/7ce70ee4-aee1-0c22-1828-dcca871202ef/Simulator_Screenshot_-_iPhone_17_PM-1_-_2026-01-11_at_21.53.59.png/1320x2868.png)







## TerraChron 9 Available In
- [South Korea](https://apptail.io/app/terrachron-9-oXoy/south-korea)
- [Vietnam](https://apptail.io/app/terrachron-9-oXoy/vietnam)

---

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