NineOneOne vs Battery Tracker Plus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NineOneOne
This app streamlines emergency calls, reducing the number of taps needed to reach emergency services. It offers customizable settings for faster dialing in critical situations.
- One-touch emergency calling
- Reduced tap count for calls
- Customizable emergency number
- Disable dial confirmation
- Large, easy-to-tap button
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We really hope you never have to call 911, or any other emergency number for that matter. But because it could happen to anyone, anywhere, at any time, someday you may need to make that important call. Now you can place that emergency call with a minimum of taps on your phone and without having to fumble around with your keypad. THE GOAL The single goal of NineOneOne was to create an application for the iPhone that would drastically, yet practically, reduce the number of taps to make the call to 911. A typical call to 911 would take approximately SEVEN taps: Home, Phone, Keypad, 9, 1, 1, Call. We knew we could do better. NineOneOne reduces the required number of taps down to FOUR in its default configuration: Home, Launch App, Big Button, Confirm. This can be further reduced down to only THREE taps in a configuration setting, which bypasses the confirmation step altogether. SIMPLICITY • The Big Red Button leads the way to safety - large enough to find and tap in an emergency setting. NineOneOne prevents accidental dialing, while remaining incredibly easy and straightforward. • Accessibility: designed for sight- and dexterity-impaired users with a large tap target and Voice Over CUSTOMIZABLE NineOneOne's Emergency Number can be set to any number, and the Dial Warning can be disabled to reduce number of taps even further - allowing you to make your emergency call immediately. THE STORY NineOneOne was designed and developed by Evan K. Stone. It was inspired out of the simple need to be able to contact emergency services in one's area quickly. Other projects were put on hold to get this out the door and into the hands of people who needed it the most. "I designed this application because I was in a an emergency situation in my car and needed to contact emergency services. However, it was too difficult under the circumstances, and I was unable to make the call. What I really needed was an app that would dial emergency services easily and in a minimum of taps. That's how NineOneOne was born." — Evan K. Stone, Developer of NineOneOne
Battery Tracker Plus
Monitor your vehicle's battery status remotely via Bluetooth. View real-time voltage, historical graphics, and perform system tests. Receive alerts and track mileage and cost data for up to four vehicles.
- Bluetooth battery monitoring
- Real-time and historical voltage graphics
- Cranking and charging system test
- Warning alerts
- Mileage and cost tracking
- Supports 4 vehicles
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The Battery Tracker Plus is a great tool for monitoring the Battery status in any of your vehicles... 6v, 12v, or 24v, Lead or Lithium. It can also monitor other battery systems. The Battery Tracker Plus allows you to see your Battery Voltage and other important data directly on your Phone via Bluetooth, no need to see or touch the battery to know its status. It also has real time and historical voltage graphics so you can see the effects of parasitic drains, the state of charge, temperature and even has a Cranking and Charging system test feature. Other features include warning alerts sent to your phone, Tracking of Mileage and Cost data, ability to Track 4 vehicles on the App.
Screenshots
Verdict
The clearest difference is review sentiment: NineOneOne at 100% against Battery Tracker Plus's 50%. NineOneOne also leads on rating (5.0 vs 2.8) and chart position (#181 vs unranked). Battery Tracker Plus's advantage is price (Free vs $0.99) and update cadence (monthly vs every 22 months). On ads 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
Battery Tracker Plus is free to download; NineOneOne costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
NineOneOne holds the better App Store score, 5.0 against 2.8. That said, the two scores are not equally well evidenced: Battery Tracker Plus has 13 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of NineOneOne's written reviews are positive against 50% of Battery Tracker Plus's.
NineOneOne ships an update every 22 months, Battery Tracker Plus monthly. The most recent releases landed on July 25, 2026 and August 27, 2026 respectively.
| Parameter | NineOneOne | Battery Tracker Plus |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 2.8 (13 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 1 | 13 — better |
| Update frequency | Every 22 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #181 — better | — |
| Devices | iPhone | iPhone, iPod, Apple Watch — better |
| Requires iOS | 18.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 1 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | Evan Stone | Antigravity Batteries LLC |
Customer experience
NineOneOne
Battery Tracker Plus
In-app purchases
NineOneOne
No in-app purchases
Battery Tracker Plus
No in-app purchases
Questions
Is NineOneOne free?
Is Battery Tracker Plus free?
Which has better reviews, NineOneOne or Battery Tracker Plus?
Do NineOneOne or Battery Tracker Plus have ads?
Which is updated more often, NineOneOne or Battery Tracker Plus?
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