Comparison

Little Green Button vs InVentry RollCall

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

Head to head
About

Little Green Button

This safety companion app acts as a panic button and duress alarm system. It allows users to share alerts with a response group and provides access to a management site for managing subscriptions and user keys.

Highlights
  • Panic button functionality
  • Duress alarm system
  • Share alerts with response group
  • Access to management site
  • Auto-renewable subscription
  • Supports up to 4 additional users
Read full description

The panic button software designed to help keep people safe; it's the perfect panic alarm system (duress alarm) for any environment that you can rely on and trust. You may purchase an auto-renewing subscription through an In-App Purchase. In purchasing a Little Green Button annual subscription you will be granted access to our service and management site for one year. Your subscription allows you to share your response group key with up to 4 other users across mobile or desktop, who will be able to raise and receive alerts within your personal group. In signing up you agree to both our Terms Of Service & Privacy Policy. For support or any questions please visit our website. β€’ Auto-renewable subscription β€’ 1 year (Β£199.99) duration β€’ Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. β€’ Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase β€’ Privacy policy: https://www.littlegreenbutton.com/privacy-policy/ β€’ Terms of service: https://www.littlegreenbutton.com/terms-of-service/

About

InVentry RollCall

Read full description

InVentry is trusted by more than 10,000 organisations and helps improve the efficiency of entry, and the security of any building. Using InVentry’s RollCall, you can simplify your emergency evacuations. The app enables you to see a live list of who is onsite, trigger evacuations, and easily account for everyone's safety during an evacuation. Designed for schools and businesses, RollCall integrates with your InVentry system seamlessly to ensure accurate and efficient tracking in real-time, confirming who is safe and allowing you to manage the evacuation process with confidence. Standout features β€’ Instantly trigger evacuations from your device. β€’ Mark people as safe with ease. β€’ See who needs assistance immediately. Download RollCall and experience effective evacuation management.

Screenshots

Little Green Button4 screens
InVentry RollCall3 screens

Verdict

The call

The clearest difference is in-app purchases: InVentry RollCall at none against Little Green Button's 1. InVentry RollCall also leads on iOS requirement (13.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Little Green Button sells 1 in-app purchase, starting at $204.99 per year. InVentry RollCall asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard2 real differences Β· 6 level
Little Green Button versus InVentry RollCall: the parameters behind the verdict, then further details
ParameterLittle Green ButtonInVentry RollCall
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesNo β€” better
MonetizationSubscriptionβ€”
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 β€” better
Further details β€” not scored
Size60 MB42 MB
Age rating17+4+
DeveloperLittle Green Button LimitedinVentry Ltd

In-app purchases

1 purchases

Little Green Button

Subscriptions1
  • Annual Subscription (Seed)$204.991 Year
None

InVentry RollCall

No in-app purchases

Questions

Is Little Green Button free?
Little Green Button is free to download, with in-app purchases available.
Is InVentry RollCall free?
InVentry RollCall is free to download, with no in-app purchases.
Do Little Green Button or InVentry RollCall have ads?
Neither Little Green Button nor InVentry RollCall shows ads.
Which is updated more often, Little Green Button or InVentry RollCall?
Little Green Button ships an update every 2 months, and InVentry RollCall every 2 months. Most recently, Little Green Button was updated on November 3, 2026 and InVentry RollCall on November 4, 2026.

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