Captain Context vs EMF Detector
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Captain Context
Read full descriptionHide full description
Stop sounding like a robot. Captain Context gives you translations that natives actually use — not the awkward, literal stuff from other apps. THE PROBLEM WITH TRANSLATION APPS Ever said "I have 25 years" instead of "I'm 25 years old"? Traditional translators give you grammatically correct but socially awkward phrases. Captain Context fixes that. TRANSLATE WITH STYLE Choose how you want to sound: - Formal — For work emails and official matters - Casual — Everyday conversations with friends - Flirty — Make a charming impression - Funny — Add humor to your messages - Learning — Understand why phrases work the way they do DISCOVER HIDDEN GEMS Your daily dose of inspiration and local secrets. Learn about cultures around the world, from funny facts and quirky traditions to deep dives into why people do things differently. Impress locals with your knowledge — or at least avoid offending them. - Curated recommendations for places locals love - Cultural tips, history, and local etiquette - Funny facts and quirky traditions from around the world - Travel insights from expats who've been there - Food spots, secret viewpoints, and local favorites Whether you're exploring a new city or living abroad, Discover helps you experience places like a local — not a tourist. MEET THE CAPTAIN Your AI language companion who does more than translate. Paste a confusing message and Captain explains the tone, hidden meanings, cultural context, and suggests how to reply. It's like having a native speaker in your pocket. YOUR PEOPLE, YOUR LANGUAGES Save the people you talk to and their languages. Quick access to translate for María in Spanish or Pierre in French — with context about your relationship.DISCOVER DAILY Fresh inspiration, travel tips, and cultural insights delivered daily. Find hidden gems wherever you are. BUILT FOR PRIVACY - No contact access required - No creepy tracking - Your conversations stay yours QUICK ACCESS EVERYWHERE - Home screen widgets - Control Center shortcuts - 3D Touch quick actions Whether you're dating someone abroad, working with international colleagues, or just trying to cancel a gym membership in another language — Captain Context helps you say it right. Terms of use: Apple’s Standard License Agreement https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
EMF Detector
This utility app transforms your iPhone's magnetometer into an electromagnetic field scanner. It offers three distinct modes for safety, general readings, and paranormal investigation, with features like measurement history and comparison.
- Magnetometer-based EMF scanning
- Auto, Safety, and Paranormal modes
- Measurement history with trend charts
- Notes and favorites for readings
- Compare saved readings
- Calibration offset
- Share readings as image or CSV
Read full descriptionHide full description
EMF Detector reads your phone's magnetometer and shows the magnetic field around you in µT or mG: on a live gauge, as separate X, Y and Z axes, and over the last 24 hours. START IN ONE TAP Tap the gauge, or the green START button under it. The app first separates the phone's own magnetism from the field around you. While it says "Calibrating…", turn the phone slowly in a figure-8 for a few seconds; the live reading then appears and stays steadier while you tilt the phone. A short vibration confirms every start and stop. TWO WAYS TO MEASURE • Standard: a radial gauge with plain-language levels from "No EMF detected" upward. In Settings you can switch it to a Safety view that labels a reading as background, weak field, wiring detected or live wire (an estimate from field strength, not proof of a wire) and sets it against ICNIRP reference levels for the general public or for workers. • Paranormal: records a quiet baseline first, then rates each spike against it on a five-step scale and marks it on a session timeline. FIND THE SOURCE The Source tab turns the reading into a warmer / colder hunt. Move the phone slowly around the room; the indicator shows whether the reading is rising or falling, and the X/Y/Z bars show the sensor's value on each axis. KEEP A RECORD • Measurement sessions are saved with their minimum, average and maximum • A 7-day trend with insights, such as how a reading compares with your usual level • Notes and favorites for each reading, plus a side-by-side compare view • CSV export of your history, and share-as-image for the current reading • A 24-hour exposure chart on the main screen • Peak hold, and "Zero here" to re-learn the baseline in a new spot • Calibration offset, µT or mG units, and a choice of reference levels TIPS FOR A GOOD READING 1. Start away from speakers, magnetic cases and car mounts, and do the figure-8 until the number appears. 2. Hold the phone flat and sweep slowly, a few centimetres from the wall or appliance. 3. Watch for a rise against your starting level rather than one absolute number. 4. Tap "Zero here" when you move to a new room so the baseline is re-learned there. FOR GHOST-HUNTING NIGHTS Spirit Box turns the live field into pulses, vibration and spoken words. It is entertainment: field spikes come from wiring, motors, magnets and the phone itself, and no spirits are detected. A Halloween theme can be switched on in Settings. HONEST TECH NOTE A phone magnetometer measures static and slowly changing magnetic fields: steel, magnets, motors, transformers and wiring under load. It samples about ten times a second, so it cannot measure 50/60 Hz mains fields accurately, and it cannot detect radio frequency, Wi-Fi, 5G or radiation. It is not a certified safety instrument; use it to explore and compare readings around your home. Made for curious people comparing readings around appliances and from room to room, and for paranormal investigators.
Screenshots
Verdict
The clearest difference is in-app purchases: EMF Detector at none against Captain Context's 2. On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Captain Context sells 2 in-app purchases, starting at $4.99 per month. EMF Detector asks for nothing beyond the download.
Captain Context ships an update every 6 days, EMF Detector every 4 days. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.
| Parameter | Captain Context | EMF Detector |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.8 (8 ratings) — better |
| Number of ratings | — | 8 — better |
| Update frequency | Every 6 days | Every 4 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | — | Ad-supported |
| Devices | iPhone | iPhone |
| Requires iOS | 17.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 23 MB | 60 MB |
| Age rating | 17+ | 17+ |
| Developer | Carlo Schaay | Kyu-Hee Jang |
In-app purchases
Captain Context
- Premium - Monthly$4.991 Month
- Premium Annual$49.991 Year
EMF Detector
No in-app purchases
Questions
Is Captain Context free?
Is EMF Detector free?
Do Captain Context or EMF Detector have ads?
Which is updated more often, Captain Context or EMF Detector?
Other comparisons















