Comparison

E1 vs AC911

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

Head to head
About

E1

This app provides instant emergency alerts to trusted contacts and local communities, offering faster help than traditional services. It enhances home security and strengthens community safety by enabling real-time location sharing and emergency-specific notifications.

Highlights
  • Instant emergency alerts
  • Faster help than 911
  • Strengthen home security
  • Emergency-specific alerts
  • Real-time location sharing
  • Two-way emergency updates
Features
Read full description

Faster help. Smarter home security. Stronger communities. E1 is the ultimate personal safety app that empowers you to protect your home, family, and neighborhood with a single tap. Whether you’re facing a break-in, medical emergency, fire, or any urgent situation, E1 connects you instantly with your trusted emergency contacts and local safety communities. In critical moments where every second counts — and 911 response times may be delayed — E1 bridges the gap. Mobilize people who care about you and can act fast, giving you faster help and greater peace of mind. Key Features:- Instant Emergency Alerts One tap notifies your emergency contacts and community groups instantly. Faster Help Than 911 Alone Activate immediate hyper-local responses while waiting for emergency services. Strengthen Your Home Security Protect your home and family by creating your personal emergency response network. Emergency-Specific Alerts Choose from Medical, Break-in, Fire, or Custom Alerts to match the situation. Real-Time Location Sharing Share your live location during emergencies for quicker assistance. Two-Way Emergency Updates Receive confirmation when help is on the way — stay informed when it matters most. Private, Secure, and No Fees Your alerts are sent only to your trusted contacts. No public sharing. No shared data. No hidden fees. Examples of Real-World Scenarios Where E1 Protects: - Home break-ins and suspicious activity - Medical emergencies at home or on the go - Fires and natural disasters - Missing children - Car accidents or roadside emergencies - Elderly family members needing urgent assistance Be Prepared. Stay Protected. Download E1 today — and bring faster emergency response, smarter home security, and stronger community safety to the people who matter most. Terms of use - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

AC911

Features
Read full description

Reduce the Cost of Ownership AC911 can reduce your HVAC system’s operating costs. It provides precise temperature control, reducing energy usage. This smart thermostat app also ensures you get the services you need when you need them. It incorporates the following innovative features: • Remote monitoring • Predictive maintenance alerts • One-touch appointment booking • Service at the touch of a button A crisp LCD screen ensures all functions are easy to find and use. Is your home not comfortable or are energy costs going up? Use the onscreen service request feature to get prompt assistance from your local HVAC company. Get the Most Out of Your Climate Control System The AC911 app lets you control and monitor temperature, fan speed, and other functions via the main control panel or a smartphone. The future of home comfort and on-demand service, it delivers benefits including: • Smart Notifications: Receive instant notifications on changes in system performance so you can be proactive with maintenance. • Real-Time Monitoring: By monitoring the health of your HVAC system, AC911 can provide predictive maintenance alerts, which can prevent downtime and increase equipment lifespan. • Service Alerts: Receive notifications of service reminders, membership renewals, and more. Even receive custom messages from your HVAC provider. • Diagnostic Tools: An overview of system health and air quality are available at the touch of a button, at no extra cost. • System Health and Air Quality Alerts: If a problem with your climate control system or an indoor air quality issue is detected, you and your service provider will be automatically notified. Quick and Simple Installation The convenience of a AC911 thermostat begins even before you start using it. Swapping out an old unit is simple. A technician removes the old thermostat, mounts the new one, and connects the wiring. They’ll even help you set up the app. The new model’s settings are adjusted to meet your climate control requirements. It provides an instant response so you experience immediate comfort. Settings from the old thermostat instantly transfer over using the serial numbers of both units, so the process is fast, simple, and convenient. Forge an Instant Connection with Your HVAC Provider The AC911 thermostat and app display your HVAC company’s logo onscreen. Their help is available at the touch of a button, so you can put your trust and confidence in a local contractor. It’s not just a modern thermostat. AC911 is a direct link between you and your AC/heating services provider. Be a Part of the NuveNetwork Nuve has partnered with local HVAC companies so you benefit from new services and smart technologies. Real-time access to your system allows contractors to quickly diagnose and resolve system issues. This can result in fewer emergency calls and in-home visits, so you can save time and money. Get Started Today Getting a AC911 thermostat and app is easy. Once you’re ready, a representative will contact you and schedule an appointment. Visit the App Store or contact your HVAC dealer to learn more.

Screenshots

E14 screens
AC9114 screens

Verdict

The call

The clearest difference is in-app purchases: AC911 at none against E1's 2. AC911 also leads on iOS requirement (13.0 vs 16). E1's advantage is update cadence (every 4 weeks vs every 3 months). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. E1 sells 2 in-app purchases, starting at $0.99 per 7 days. AC911 asks for nothing beyond the download.

UpkeepUpdate frequency

E1 ships an update every 4 weeks, AC911 every 3 months. The most recent releases landed on November 4, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
E1 versus AC911: the parameters behind the verdict, then further details
ParameterE1AC911
PriceFreeFree
Rating4.9 (16 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings16 — better—
Update frequencyEvery 4 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS1613.0 — better
Further details — not scored
Size130 MB61 MB
Age rating12+4+
DeveloperE1, LLCNuve Home

In-app purchases

2 purchases

E1

Subscriptions2
  • Sandbox subs$0.997 Days
  • Premium Annual$49.991 Year
None

AC911

No in-app purchases

Questions

Is E1 free?
E1 is free to download, with in-app purchases available.
Is AC911 free?
AC911 is free to download, with no in-app purchases.
Do E1 or AC911 have ads?
Neither E1 nor AC911 shows ads.
Which is updated more often, E1 or AC911?
E1 ships an update every 4 weeks, and AC911 every 3 months. Most recently, E1 was updated on November 4, 2026 and AC911 on October 28, 2026.

Other comparisons