Comparison

Simtek Sensors vs Vaultek ViSN

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

Head to head
About

Simtek Sensors

Monitor remote locations without Wi-Fi or power. Receive instant alerts on your phone when a sensor is triggered, enhancing security and peace of mind. Features include customizable messages, alert history, and low battery notifications.

Highlights
  • Remote space monitoring without Wi-Fi
  • Instant phone alerts (approx. 20 seconds)
  • Customizable alert messages
  • Alert history tracking
  • Low battery notifications
  • Signal strength and battery status
Features
Read full description

Companion app for the Simtek StealthALERT Security Sensor. Monitor any remote space without needing WIFI or electrical outlets. Protect what you love. Alerts your phone in about 20 seconds when the sensor is triggered. Enhance your security, awareness and peace of mind. Features: · Easy setup: scan QR Code and you're done · Customize alert messages · See alert history · Unsubscribe from alerts · Track location (triangulation) · Low battery alerts · See signal strength, battery, and trigger source · Third party subscriber notifications - get a push alert if someone subscribes to your sensor without you knowing If you experience any bugs or have feedback and questions please email help@simtek.io Leave detailed information with a screenshot.

About

Vaultek ViSN

Control and monitor your Wi-Fi enabled safe remotely. Effortlessly set up your device, manage user access with fingerprints and temporary passcodes, and receive real-time alerts for critical activity. Upgrade for advanced features like SOS alerts and multi-safe management.

Highlights
  • Wi-Fi enabled safe network
  • User-friendly guided setup
  • Real-time critical activity alerts
  • Program up to 80 fingerprints
  • Temporary passcode generation
  • SOS emergency alerts (premium)
  • Over-the-air firmware updates
Read full description

Introducing ViSN™, Vaultek's Intelligent Safe Network incorporating Wi-Fi technology. Take your personal security to the next level and effortlessly go from out of the box to an armed and ready defense system. Program your ViSN™ Vaultek safe like never before with a user-friendly setup process, customize your safe's settings to fit your needs, and receive real-time alerts for critical safe activity - no matter where you are in the world. The Vaultek ViSN™ app provides you with an on-screen user-friendly guided setup. Connecting your safe to your home network, registering your safe, enrolling fingerprints, and programming your master code has never been easier. ViSN™ allows you to control programming through your password-protected app in conjunction with your safe, making the setup experience both seamless and intuitive. Standard Included Features: • Over the Air (OTA) firmware updates for your safe. • Program up to 80 unique fingerprints. • Detailed settings and notification management for 1 safe. Upgraded Premium Features (in-app subscription required) SOS Emergency Alert Assign emergency contacts, and set an emergency access point. If the safe is accessed using the emergency access point, an SOS alert is sent to your assigned contacts. Temporary Passcode Create a temporary passcode for guests and set the desired number of uses and how long the code is valid for. Text Notifications Sign up to receive text messages for critical safe activity. Service only available in the United States. Transfer Fingerprints to New Safes When adding multiple safes, this new feature allows you to transfer programmed fingerprints to your new safes; instantly granting the same biometric access to other safes. There’s no need to program each new safe individually. The Premium subscription supports detailed settings and notification management for up to 5 safes. Safe networks of more than 5 safes can inquire about Vaultek’s Enterprise platform. This app is only compatible with the Vaultek line of ViSN™ safes. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Simtek Sensors4 screens
Vaultek ViSN4 screens

Verdict

The call

The clearest difference is review sentiment: Simtek Sensors at 100% against Vaultek ViSN's 33%. Simtek Sensors also leads on rating (4.9 vs 2.3) and in-app purchases (none vs 1). Vaultek ViSN's advantage is ads (none vs shown) and iOS requirement (13.0 vs 16.0). On price, ratings volume 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

Both are free to download. Vaultek ViSN sells 1 in-app purchase, starting at $4.99 per month. Simtek Sensors asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Simtek Sensors holds the better App Store score, 4.9 against 2.3. Both are backed by a comparable volume of ratings — 7 and 20 respectively. Written reviews point the same way: 100% of Simtek Sensors's written reviews are positive against 33% of Vaultek ViSN's.

UpkeepUpdate frequency

Simtek Sensors ships an update every 5 weeks, Vaultek ViSN every 3 months. The most recent releases landed on November 2, 2026 and October 27, 2026 respectively.

Scorecard7 real differences · 3 level
Simtek Sensors versus Vaultek ViSN: the parameters behind the verdict, then further details
ParameterSimtek SensorsVaultek ViSN
PriceFreeFree
Rating4.9 (7 ratings) — better2.3 (20 ratings)
Positive reviews100.0% of reviews — better33.3% of reviews
Number of ratings720 — better
Update frequencyEvery 5 weeks — betterEvery 3 months
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFreemium
DevicesiPhoneiPhone, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size7 MB20 MB
Age rating4+4+
DeveloperSimtek, Inc.Vaultek Safe, Inc.

Customer experience

Simtek Sensors

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Vaultek ViSN

All ratings17 ratings
Positive35.3%
Neutral5.9%
Negative58.8%
Written reviews9 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

None

Simtek Sensors

No in-app purchases

1 purchases

Vaultek ViSN

Subscriptions1
  • ViSN Premium Subscription$4.991 Month

Questions

Is Simtek Sensors free?
Simtek Sensors is free to download, with no in-app purchases.
Is Vaultek ViSN free?
Vaultek ViSN is free to download, with in-app purchases available.
Which has better reviews, Simtek Sensors or Vaultek ViSN?
Simtek Sensors is rated higher. Simtek Sensors averages 4.9 out of 5 from 7 ratings, while Vaultek ViSN averages 2.3 from 20 ratings.
Do Simtek Sensors or Vaultek ViSN have ads?
Simtek Sensors shows ads; Vaultek ViSN does not.
Which is updated more often, Simtek Sensors or Vaultek ViSN?
Simtek Sensors ships an update every 5 weeks, and Vaultek ViSN every 3 months. Most recently, Simtek Sensors was updated on November 2, 2026 and Vaultek ViSN on October 27, 2026.

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