Comparison

The Turnkeeper vs Emf Detector Radiation Reader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

The Turnkeeper

This app helps speed up board game sessions by providing customizable timers for turns or entire games. It supports a large number of players and offers flexible time management options, including adding time per turn or to specific players. Features like crash protection and unlimited undo ensure a smooth gaming experience.

Highlights
  • Turn and game timer modes
  • Supports 2-20 players
  • Customizable time budgets
  • Time added per turn
  • Crash/reboot protection
  • Unlimited undo functionality
  • Notifications for time up
Features
Read full description

Love board games, but wish turns moved a little faster? The Turnkeeper keeps games moving with flexible timers for 2 to 20 players. Use it casually to discourage endless turns, or competitively to give every player a fixed time budget. The Turnkeeper can be used as a simple turn timer or as a multiplayer game clock — like a chess clock built for the whole table. In Turn Timer mode, each player gets a set amount of time for every turn. It’s great for keeping casual games moving and encouraging players to think ahead while others are playing. In Game Timer mode, each player gets a total time budget for the entire game. You can optionally add extra time after each turn, similar to increment timing in chess. Features: • Supports 2 to 20 players • Turn Timer and Game Timer modes • Set timers from 1 minute to 10+ hours • Optional time added after every turn • Count-up or countdown timing • Clockwise, counter-clockwise, or freestyle turn order • Customize player names and colors • Mark defeated players to remove them from the turn order • Add or adjust time during a game • Adjust the per-turn time increment while playing • Loud time-up alerts • Notifications when time expires in the background • Unlimited Undo • Restore an active game after restarting the app • Rotate the game board during setup The Turnkeeper doesn’t automatically eliminate someone when their clock reaches zero. Their timer can continue into negative time, leaving the rules up to your group. Running out of time might mean losing the game, earning a penalty, or simply serving as a reminder to keep things moving. You can also give individual players extra time, making it easy to accommodate beginners or anyone who needs a little longer. Whether you’re trying to fit a game into a short amount of time, speed up a slow-moving session, or run a competitive multiplayer game with chess-style timing, The Turnkeeper helps keep everyone focused and the game moving.

About

Emf Detector Radiation Reader

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
Read full description

Track magnetic fields near you. A warning beep will be activated to warn you. The app detects ferromagnetic metals using the iPhone's built-in compass feature. Also works as Electrosmog (EMP) detector. Detect many kinds of home appliances that create radio-frequency EMF. For example:plugs,cell phones,routers, baby monitors, doorbells, intercom systems,night alarm clocks, electronic appliances , electrical wire, antennas. You can check the limit allowed in the "Radio-Frequency Guidelines - for continuous and prolonged exposure" in the instructions button of this app. The higher measures of magnetic fields are stored. Not only does it help you identify potential sources of harmful EMF, but it also provides guidelines on the allowed limit for continuous and prolonged exposure, helping you make informed decisions about your environment. Plus, it stores the higher measures of magnetic fields with a date stamp for each event, allowing you to monitor your exposure over time. Magnetic fields are measured in nT (nanoTesla) and/or milligauss (mG). Customize your screen colors, calculate the magnetic force in nano tesla (nT), and store your records for future reference. Don't leave your health to chance. Take charge of your surroundings and shield yourself and your loved ones from harmful EMF radiation. Take control of your environment and protect yourself and your loved ones from harmful EMF radiation. Health is our most important asset. +++ FEATURES: -Track high magnetic fields and when has it been measured. -Table guide "Radio-Frequency Guidelines - for continuous and prolonged exposure". -Warning beep near focus emissions. -Magnetic force is calculated in nanoteslas ( nT ) -Record your readings with a date stamp of each event. -Store your records. -Change colors of your screen. If you have any issues to report or suggestions to make, please email the device you’re using, iOS version, and a detailed description of the problem to martinbellostudios@gmail.com Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

The Turnkeeper4 screens
Emf Detector Radiation Reader3 screens

Verdict

The call

The clearest difference is in-app purchases: The Turnkeeper at none against Emf Detector Radiation Reader's 5. The Turnkeeper also leads on ads (none vs shown). Emf Detector Radiation Reader's advantage is update cadence (every 3 weeks vs every 5 months) and ratings volume (1.3K vs 30). On price, rating, review sentiment and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Emf Detector Radiation Reader holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Emf Detector Radiation Reader has 1.3K ratings behind it against 30, so its average is the more settled of the two. Written reviews point the same way: 80% of The Turnkeeper's written reviews are positive against 87% of Emf Detector Radiation Reader's.

UpkeepUpdate frequency

The Turnkeeper ships an update every 5 months, Emf Detector Radiation Reader every 3 weeks. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

Scorecard6 real differences · 4 level
The Turnkeeper versus Emf Detector Radiation Reader: the parameters behind the verdict, then further details
ParameterThe TurnkeeperEmf Detector Radiation Reader
PriceFreeFree
Rating4.4 (30 ratings)4.6 (1.3K ratings) — better
Positive reviews80.0% of reviews86.7% of reviews — better
Number of ratings301.3K — better
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad, iPod, Apple Watch — better
Requires iOS16.415.6 — better
Further details — not scored
Size5 MB15 MB
Age rating4+4+
DeveloperGeospike Pty LtdBello Studios LLC

Customer experience

The Turnkeeper

All ratings30 ratings
Positive86.7%
Neutral3.3%
Negative10.0%
Written reviews10 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

Emf Detector Radiation Reader

All ratings1,315 ratings
Positive92.1%
Neutral3.2%
Negative4.7%
Written reviews435 reviews
Positive86.7%
Neutral4.4%
Negative9.0%

Bugs and requests

The Turnkeeper

Not enough reviews yet to summarise bugs or requests.

Emf Detector Radiation Reader

Reported bugs

2 issues
  • Readout digits overlapping on screen
  • Inconsistent behavior of sound indicator

Requested features

4 requests
  • 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

In-app purchases

None

The Turnkeeper

No in-app purchases

5 purchases

Emf Detector Radiation Reader

Subscriptions2
  • Weekly Premium$4.997 Days
  • 1 Year Premium$12.991 Year
One-time3
  • Enjoy All The Features$0.99
  • Premium Pack - All Features$4.99
  • Lifetime Access$14.99

Questions

Is The Turnkeeper free?
The Turnkeeper 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.
Which has better reviews, The Turnkeeper or Emf Detector Radiation Reader?
Emf Detector Radiation Reader is rated higher. The Turnkeeper averages 4.4 out of 5 from 30 ratings, while Emf Detector Radiation Reader averages 4.6 from 1.3K ratings.
Do The Turnkeeper or Emf Detector Radiation Reader have ads?
Emf Detector Radiation Reader shows ads; The Turnkeeper does not.
Which is updated more often, The Turnkeeper or Emf Detector Radiation Reader?
The Turnkeeper ships an update every 5 months, and Emf Detector Radiation Reader every 3 weeks. Most recently, The Turnkeeper was updated on October 23, 2026 and Emf Detector Radiation Reader on October 25, 2026.

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