Monstrometer vs HAL
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Monstrometer
This app helps you identify and understand supernatural beings. It uses biometric scans and questions to assess if someone is a disguised creature like a zombie or vampire, and offers survival tips and videos.
- Biometric finger scan for creature identification
- Psychometric questions to assess supernatural probability
- Survival videos for various creatures
- Tips for dealing with supernatural beings
- Social game for tricking friends
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Use The Seth On Survival Monstrometer to scan and interrogate old friends and new acquaintances to determine if they are really supernatural beings in disguise and then learn how to deal with them. You can even scan yourself and link with others who share your supernatural condition. The Monstrometer uses a biometric finger scan and a battery of psychometric questions to determine the probability that your subject could actually be a zombie, vampire, werewolf, leprechaun or other dangerous supernatural creature. Recommended for anyone who has ever wondered, if I ask for her number will she just sink her pretty teeth into my carotid artery and suck out all my blood? And why is my friend acting so weird? The Monstrometer has been updated regularly with new information and results and now you can even watch survival videos with werewolves, zombies and leprechauns right from within the app with even more new videos coming soon. On the SOS website you'll find Monstometer tips to help ensure your survival. (Also some cheats to trick your friends!) Developed by supernatural survivalist Seth Greening, host of web series Seth On Survival and the upcoming Monstrometer Report and the online home of supernatural survival http://www.sethonsurvival.com Knowledge is power. Less power than a functioning particle cannon, true, but still. Don’t be caught unprepared! A fun social game and important survival tool.
HAL
Engage in voice-activated conversations with an AI assistant that mimics sci-fi characters. Enjoy jokes, small talk, and get advice for various situations. Future updates aim to improve memory and accuracy.
- Voice input for immediate conversation
- AI-powered jokes and small talk
- Assistance with research and advice
- Sci-fi movie-like AI interaction
- Free to use
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"HAL: Voice AI Assistant" is a free AI chat application that utilizes OpenAI's Chat API, allowing you to converse with an AI like those in sci-fi movies right on your smartphone. Easily usable with voice input alone, and it's free! Upon opening the app, voice input starts immediately, allowing you to casually ask questions or engage in conversation. The app's greatest charm is the AI's ability to tell jokes and have enjoyable small talk. Providing fun moments filled with laughter, just like conversations with friends and family. Moreover, it excels in various situations, such as research, love advice, or casual chats when bored. The current app has weaknesses like being unable to remember interactions or the AI conveying incorrect information. However, upcoming updates aim to resolve these issues. Experience a sci-fi movie-like future in the palm of your hand with "HAL: Voice AI Assistant" Look forward to its further evolution as a fun and convenient app.
Screenshots
Verdict
The clearest difference is review sentiment: Monstrometer at 71% against HAL's 0%. Monstrometer also leads on rating (4.7 vs 3.5) and ads (none vs shown). On price, ratings volume, update cadence and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Monstrometer holds the better App Store score, 4.7 against 3.5. Both are backed by a comparable volume of ratings — 9 and 11 respectively. Written reviews point the same way: 71% of Monstrometer's written reviews are positive against 0% of HAL's.
Monstrometer ships an update every 3 months, HAL every 2 months. The most recent releases landed on October 16, 2026 and October 5, 2026 respectively.
| Parameter | Monstrometer | HAL |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (9 ratings) — better | 3.5 (11 ratings) |
| Positive reviews | 71.1% of reviews — better | 0.0% of reviews |
| Number of ratings | 9 | 11 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 9.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 51 MB | 35 MB |
| Age rating | 4+ | 17+ |
| Developer | T3 Digital Productions | yu nakamura |
Customer experience
Monstrometer
HAL
Bugs and requests
Monstrometer
Reported bugs
15 issues- Crashes frequently
- Keeps crashing
- Crashes every time
- Force closes
- Bug that makes the app crash and delete data
Show 10 moreShow fewer
- Buggy
- Keeps closing itself
- Doesn't save stats or monsters
- Crashes in the middle of the quiz
- Crashes every 10 seconds
- Crashes way too many times
- Can't answer questions due to crashing
- Keeps crashing on the 5th question
- Constantly crashing when trying to log in
- Crashes on me
Requested features
10 requests- Update the app on the AppStore
- Add sound effects
- Make human a result option
- Add unicorn and pegasus monsters
- Show most common answer and past quizzes
Show 5 moreShow fewer
- List results and near misses
- Make monster sounds
- Create more apps
- Monster database
- Cool monster pictures for wallpaper
HAL
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Monstrometer
No in-app purchases
HAL
No in-app purchases
