# CATS Input Method Pro vs Emf Detector Radiation Reader

The clearest difference is in-app purchases: CATS Input Method Pro at none against Emf Detector Radiation Reader's 5. CATS Input Method Pro also leads on ads (none vs shown). Emf Detector Radiation Reader's advantage is update cadence (every 3 weeks vs every 24 months) and device support (4 vs 2). On price there is nothing between them.

Both are free to download. Emf Detector Radiation Reader sells 5 in-app purchases, starting at $4.99 per 7 days. CATS Input Method Pro asks for nothing beyond the download.

CATS Input Method Pro ships an update every 24 months, Emf Detector Radiation Reader every 3 weeks. The most recent releases landed on October 13, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | CATS Input Method Pro | Emf Detector Radiation Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (1.3K ratings)](https://appshunter.io/ios/app/emf-detector-radiation-reader/id1588868540/reviews)** |
| Number of ratings | — | **1.3K** |
| Positive reviews | — | 86.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 24 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 7 MB | 16 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [YIU LEUNG RANDY CHAN](https://appshunter.io/developer/1474191447) | [Bello Studios LLC](https://appshunter.io/developer/1540574147) |

## What reviewers say

### CATS Input Method Pro

[App page](https://appshunter.io/ios/app/cats-input-method-pro/id1523143711)

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

**In-app purchases:** none


### Emf Detector Radiation Reader

[App page](https://appshunter.io/ios/app/emf-detector-radiation-reader/id1588868540)

Detect and track magnetic fields and potential EMF sources around you. Receive warnings for high readings and access guidelines for safe exposure levels. Monitor your environment and protect your health.

**Highlights:** Track magnetic fields and high readings, Detects ferromagnetic metals, Electrosmog (EMP) detector, Identifies home appliance EMF sources, Radio-Frequency Guidelines table, Warning beep for emissions, Stores readings with date stamps

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| 1 Year Premium | $12.99 | per year |
| Enjoy All The Features | $0.99 | one-time |
| Premium Pack - All Features | $4.99 | one-time |
| Lifetime Access | $14.99 | one-time |

**What reviewers like**

- 🚀 Accurate readings
- 🔒 Helpful for detecting hidden devices
- 👍 Visually appealing interface
- 👍 Easy to use
- 👍 Consistent performance

**What reviewers complain about**

- 🐛 Frequent ads even in paid version
- 🐛 Inconsistent or inaccurate readings in some cases
- 🔋 Drains device battery quickly
- 👎 Lack of clear instructions on interpreting readings

**Reported bugs**

- Readout digits overlapping on screen
- Inconsistent behavior of sound indicator

**Requested features**

- Ability to compare readings over time
- Option to export/share recorded data
- More detailed information on safe/unsafe EMF levels
- Integration with other EMF monitoring devices


## Frequently asked questions

### Is CATS Input Method Pro free?

CATS Input Method Pro is free to download, with no in-app purchases.

### Is Emf Detector Radiation Reader free?

Emf Detector Radiation Reader is free to download, with in-app purchases available.

### Do CATS Input Method Pro or Emf Detector Radiation Reader have ads?

Emf Detector Radiation Reader shows ads; CATS Input Method Pro does not.

### Which is updated more often, CATS Input Method Pro or Emf Detector Radiation Reader?

CATS Input Method Pro ships an update every 24 months, and Emf Detector Radiation Reader every 3 weeks. Most recently, CATS Input Method Pro was updated on October 13, 2026 and Emf Detector Radiation Reader on October 27, 2026.

---

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