Comparison

Cost Companion vs Necrometer

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

Head to head
About

Cost Companion

Easily calculate discounts on clearance items or tips for services. This utility app offers a simple interface to determine sale prices and tip amounts, with options to split bills among multiple people. It also accounts for sales tax for accurate final totals.

Highlights
  • Tip calculator
  • Split tip/bill
  • Sale discount calculator
  • Switch between tip and sale modes
  • Large display
  • Sales tax entry
  • Locale-based currency display
Read full description

'Cost Companion' offers a quick solution to two of the most asked for calculations, 'clearance sales' and 'tips.' Quickly calculate how much a clearance item costs, or if you prefer, with a tap of a button switch to calculating tips. 'Cost Companion' focuses on ease of use and quick results. Features: • Tip calculator - Easy to use, just input the cost of your meal and/or drinks, the percent tip you want to pay, and quickly see the tip amount and total for the bill. • Split the tip/bill between multiple parties (up to 12). Quickly see how much each party owes for both the tip and for the total bill. • Sale discount calculator - Input cost of the item(s) and the percent discount, and quickly see how much the item(s) costs with the discount applied. Clearance shopping has never been easier. • Quickly switch between 'tip' and 'sale' modes with a tap of a button. • Large display for fast and easy reading. • Entry of sales tax from your check to get accurate totals for splitting among friends etc. • Displays currency based on your locale setting of your iPhone.

About

Necrometer

This app is designed for ghost hunters and paranormal investigators. It detects magnetic energy fluctuations and facilitates spirit communication through text and speech modes using AI-powered systems and audio effects. It aims to provide insights and messages from the other side.

Highlights
  • Magnetic energy detection meter
  • Text-based spirit communication
  • AI-powered speech generation
  • Customizable voice and audio effects
  • Access to over 60,000 words/phrases
  • Custom word list functionality
Features
Read full description

Necrometer Designed for ghost hunters and paranormal enthusiasts. This multifunctional app can be used to detect and communicate with spirits. We have taken known spirit communication techniques and theories and have implemented them here in new and innovative ways. -Meter that detects and measures magnetic energy -Text and Speech modes -2 Built in Text To Speech A.I. systems -3 Voices -Pitch control with randomization option -Reverb and Echo audio effects The Meter: It is believed that spirits can affect magnetic energy fields. Using your phone’s Magnetometer sensor this app can detect levels of magnetic interference in the environment. These fluctuations of energy fields have a direct influence on the communication. -Meter noise (optional) reacts to fluctuations in the meter Text Mode: Simply slide the power button over to "Text" and begin asking your questions. Walking around a location you can detect energy anomalies and various levels of magnetic interference. Words and phrases will begin coming through the app. The relevance of the communication is determined by multiple factors including spirit connection and strength. Those who have a stronger connection to the otherside may experience more direct and relevant communication. Similar to the famous Ovilus ITC device, the Necrometer app is designed to facilitate spirit communication by measuring fluctuations of energy in the environment. The idea that spirits can manipulate electronic devices for purposes of communication is well documented. Based on the theory of random selection and known evidence of energy manipulation, the Necrometer app utilizes these known methods of spirit communication and paranormal phenomena. -Access to over 60k words/phrases -Custom word list, Add your own words and phrases Speech Mode: Sliding the power button over to "Speech" will turn on this unique mode of the app. Created to facilitate ghost box/ EVP like communication, the speech mode of the app provides audible spirit communication like no other. Generating speech sounds from within the app, there are no sound banks, word lists, radio, or any other pre-recorded audio. Spirits can use and manipulate these random speech sounds to form coherent messages, an idea rooted in ITC/EVP theory. Some of these messages may be heard in real time similar to a ghost box, other EVP-like communication can be heard on playback of the recorded audio. Again, the strength and level of communication being recieved depends on various factors. Coherent messages can only be obtained through communication with spirit, otherwise only unclear speech sounds will be heard. -Rate slider to increase/decrease rate of audio coming through The Necrometer app is an advanced all-in-one app that can be used to detect energy anomalies in the area, produce words and phrases that can provide relevant clues/information, and provide audible ITC/EVP communication from spirit.

Screenshots

Cost Companion4 screens
Necrometer4 screens

Verdict

The call

The clearest difference is review sentiment: Cost Companion at 100% against Necrometer's 31%. Cost Companion also leads on rating (5.0 vs 2.7) and price ($0.99 vs $9.99). Necrometer's advantage is ratings volume (277 vs 6) and chart position (#7 vs unranked). On ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Cost Companion costs $0.99 and Necrometer $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Cost Companion holds the better App Store score, 5.0 against 2.7. That said, the two scores are not equally well evidenced: Necrometer has 277 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 100% of Cost Companion's written reviews are positive against 31% of Necrometer's.

UpkeepUpdate frequency

Cost Companion ships an update every 3 days, Necrometer every 9 months. The most recent releases landed on October 9, 2026 and October 30, 2026 respectively.

Scorecard8 real differences · 3 level
Cost Companion versus Necrometer: the parameters behind the verdict, then further details
ParameterCost CompanionNecrometer
Price$0.99 — better$9.99
Rating5.0 (6 ratings) — better2.7 (277 ratings)
Positive reviews100.0% of reviews — better30.6% of reviews
Number of ratings6277 — better
Update frequencyEvery 3 days — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank—#7 — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better14.0
Further details — not scored
Size5 MB174 MB
Age rating4+12+
DeveloperAngela McarthurBitPlague LLC

Customer experience

Cost Companion

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Necrometer

All ratings271 ratings
Positive38.0%
Neutral10.7%
Negative51.3%
Written reviews209 reviews
Positive30.6%
Neutral12.0%
Negative57.4%

Bugs and requests

Cost Companion

Not enough reviews yet to summarise bugs or requests.

Necrometer

Reported bugs

2 issues
  • Audio not working on certain devices
  • Random/irrelevant responses

Requested features

3 requests
  • Ability to save/review past session logs
  • Multi-language support
  • Custom word list functionality

In-app purchases

None

Cost Companion

No in-app purchases

None

Necrometer

No in-app purchases

Questions

Is Cost Companion free?
Cost Companion costs $0.99, with no in-app purchases.
Is Necrometer free?
Necrometer costs $9.99, with no in-app purchases.
Which has better reviews, Cost Companion or Necrometer?
Cost Companion is rated higher. Cost Companion averages 5.0 out of 5 from 6 ratings, while Necrometer averages 2.7 from 277 ratings.
Do Cost Companion or Necrometer have ads?
Neither Cost Companion nor Necrometer shows ads.
Which is updated more often, Cost Companion or Necrometer?
Cost Companion ships an update every 3 days, and Necrometer every 9 months. Most recently, Cost Companion was updated on October 9, 2026 and Necrometer on October 30, 2026.

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