# Taiwan Datum vs Cat Flow

The clearest difference is price: Cat Flow at Free against Taiwan Datum's $1.99. Cat Flow also leads on review sentiment (100% vs 73%) and update cadence (fortnightly vs every 2 months). Taiwan Datum's advantage is in-app purchases (none vs 13) and device support (3 vs 1). On ads there is nothing between them.

Cat Flow is free to download; Taiwan Datum costs $1.99 up front. Cat Flow sells 13 in-app purchases, starting at $1.99 per month. Taiwan Datum asks for nothing beyond the download.

Taiwan Datum ships an update every 2 months, Cat Flow fortnightly. The most recent releases landed on September 30, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Taiwan Datum | Cat Flow |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.0 (2 ratings)](https://appshunter.io/ios/app/cat-flow-kitty-focus-timer/id6702013134/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 72.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 143 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HUNG HSUN LIN](https://appshunter.io/developer/482586427) | [Nicole Cat](https://appshunter.io/developer/1715438272) |

## What reviewers say

### Taiwan Datum

[App page](https://appshunter.io/ios/app/taiwan-datum/id620301625)

This app measures coordinates in Taiwan using WGS84, TWD97, and TWD67 systems. It allows users to export data as CSV and attach photos, videos, and voice recordings to measurements.

**Highlights:** WGS84, TWD97, TWD67 coordinate systems, CSV data export, Attach photos, Attach videos, Attach voice records, Download media via iTunes

**Features:** Vision Pro support

**In-app purchases:** none


### Cat Flow

[App page](https://appshunter.io/ios/app/cat-flow-kitty-focus-timer/id6702013134)

This app uses a cat-themed interface to help users improve focus and build disciplined habits. It offers a companion-style focus mode where virtual cats protect your time, and immersive scenified spaces for concentration. Detailed data review helps track progress and unlock new cats and scenes.

**Highlights:** Companion-style focus with virtual cats, Scenified spaces for immersive focus, Customizable times, scenes, and themes, Multidimensional focus data review, Unlockable cats and scenes, Gravity sensor for focus session triggers

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $11.99 | per year |
| Bella | $0.99 | one-time |
| Gizmo | $0.99 | one-time |
| Toby | $0.99 | one-time |
| Simba | $1.99 | one-time |
| Lucky | $1.99 | one-time |
| Coco | $1.99 | one-time |
| Loki | $1.99 | one-time |
| Forest | $2.99 | one-time |
| Sky | $2.99 | one-time |
| Moonnight | $2.99 | one-time |
| Jingle | $2.99 | one-time |


## Frequently asked questions

### Is Taiwan Datum free?

Taiwan Datum costs $1.99, with no in-app purchases.

### Is Cat Flow free?

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

### Do Taiwan Datum or Cat Flow have ads?

Neither Taiwan Datum nor Cat Flow shows ads.

### Which is updated more often, Taiwan Datum or Cat Flow?

Taiwan Datum ships an update every 2 months, and Cat Flow fortnightly. Most recently, Taiwan Datum was updated on September 30, 2026 and Cat Flow on October 10, 2026.

---

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