Comparison

Causer vs OncallManager

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

Head to head
About

Causer

Manage your volunteer schedule and engage with causes you care about. Track past and upcoming shifts, select new opportunities, and check in/out directly from your mobile device. Stay informed with push notifications and see the impact of your contributions.

Highlights
  • View past and upcoming volunteer shifts
  • Select new volunteer shifts
  • Push notifications for shifts
  • In-app check-in/check-out
  • Add hours manually
  • Calendar view of schedule
  • Track volunteer impact
Features
Read full description

Causer is for volunteers to handle their volunteer schedules while engaging with the causes and organizations they care about! Your volunteer program is using Get Connected volunteer software, giving you access to your volunteer profile right here from the Causer app. Log in or create your account to connect with your volunteer organization. From your volunteer dashboard, youíll be able to view all of your past and upcoming volunteer shifts, or select new volunteer shifts! Receive push notifications when your volunteer shift is approaching and when you arrive on-site ready to check-in. You can check in directly from the app when you begin volunteering to ensure your program is able to collect your volunteer hours - data that helps make a bigger difference! The app will also remind you when it is time to check out and stop your volunteer clock. From your volunteer profile you can: ~ Add hours without checking in ~ Select new volunteer shifts ~ Manage your volunteer schedule in calendar view ~ Check-in/check-out of volunteer shifts ~ And, see the impact you're making!

About

OncallManager

Features
Read full description

Being on call means you can’t leave home, but don’t you feel like others are surprisingly not at home? It’s a hassle to ask your manager to switch shifts, and you’re not even sure who’s at home... OncallManager solves these problems for you.

Screenshots

Causer4 screens
OncallManager4 screens

Verdict

The call

The clearest difference is update cadence: OncallManager at every 5 days against Causer's fortnightly. Causer's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Causer ships an update fortnightly, OncallManager every 5 days. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 8 level
Causer versus OncallManager: the parameters behind the verdict, then further details
ParameterCauserOncallManager
PriceFreeFree
Rating2.5 (84 ratings) — better—
Positive reviews31.8% of reviews—
Number of ratings84 — better—
Update frequencyFortnightlyEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size64 MB16 MB
Age rating4+4+
DeveloperGalaxy DigitalHiroshi Matsueda

In-app purchases

None

Causer

No in-app purchases

None

OncallManager

No in-app purchases

Questions

Is Causer free?
Causer is free to download, with no in-app purchases.
Is OncallManager free?
OncallManager is free to download, with no in-app purchases.
Do Causer or OncallManager have ads?
Neither Causer nor OncallManager shows ads.
Which is updated more often, Causer or OncallManager?
Causer ships an update fortnightly, and OncallManager every 5 days. Most recently, Causer was updated on October 6, 2026 and OncallManager on October 10, 2026.

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