August 24, 2026

FocusCall vs Zangy vs ToDoCall vs Simboo: How the Real-Call Reminder Apps Compare

Four apps promise a phone call instead of a notification. One of them doesn't actually place one. Here's what differs once you get past the pitch.

The "app that calls you as a reminder" category is small enough to list by name: FocusCall, Zangy, ToDoCall, and Simboo. All four launched within the last year or so, all four are chasing the same Reddit-shaped complaint about push notifications, and none of them has meaningful App Store ratings yet. It's early, which means the differences between them are mostly honest engineering and pricing choices, not brand reputation.

We make one of these. Read the pricing and feature claims below against each product's own site before you commit money — this kind of app changes its pricing more often than this article gets updated.

First: what "real call" actually means

Three of these four place an actual outbound call through telecom infrastructure — it rings your phone through iOS's native call screen, the same way a person calling you would. Simboo is the exception: its own positioning is a simulated call sound played on your own device, not a call placed to your number. That's a real product with a real audience — it's also the cheapest option here — but it's a different mechanism, closer to a themed alarm than to a call you can't dismiss with the reflex swipe you'd use on a notification.

Price

Zangy's model is the one worth reading twice: a flat-looking $9.99 base fee with a per-minute meter and a per-missed-call charge stacked on top. A quiet month costs close to the base price. A busy month — more reminders, more nags, more missed calls while you're driving — costs more, and you don't know how much more until the bill arrives. ToDoCall solves that predictability problem by billing weekly instead of monthly, which is a strange way to solve it: $43/month-equivalent for "unlimited" is a lot to hedge against a metered bill you might never have hit anyway.

What each one actually does

If you want the wider ranking of interruption mechanics beyond just this category — push notifications, alarms, body doubling, and where a phone call fits among them — we wrote about that separately in ADHD Reminder Apps: What Actually Works.

Where FocusCall is honestly behind

Three things, said plainly, because a comparison page that only flatters itself isn't useful to anyone deciding between these:

• The voice. Zangy uses ElevenLabs, which is a genuinely more natural-sounding voice than the Twilio text-to-speech we currently use. Ours reads your task title back in a clear but recognizably synthetic voice. We haven't shipped an AI voice yet — it's a real gap, not a footnote, and the reason is cost: per-minute AI voice pricing runs many times what standard TTS costs, which is hard to fold into a flat, unmetered plan without either raising prices or metering the way Zangy does.
• No app needed on the receiving end. Zangy and some other players in this space can ring a number that's never installed anything. FocusCall requires its own app on the phone that gets called, which is more setup before the first reminder ever rings — real onboarding friction, not a minor detail.
• Region. FocusCall currently serves US and Canada phone numbers only. That's a hard no for most of the world right now, and it rules FocusCall out even for some readers in otherwise-served countries who happen to have a foreign number.

Where FocusCall is ahead

• A flat price you can predict. Free, $9.99, or $19.99 a month — no per-minute meter, no per-missed-call fee. A rough week doesn't turn into a surprise invoice.
• An escalation ladder that's actually configurable. Nag Mode retries a missed call by default three times, ten minutes apart, and both numbers are adjustable per reminder — not a fixed, one-size setting. We wrote up exactly how that works, attempt by attempt, in How Nag Mode Works.
• A real menu, not a yes/no. Press 1 for done, 2 to snooze an hour, 3 for tomorrow, 9 to cancel the reminder, 0 to stop all reminder calls entirely. Four outcomes plus a hard opt-out, not a binary.
• The script rotates — mostly. Every call before the last one in a nag sequence picks from a small set of different phrasings, specifically so it doesn't start sounding identical and easy to tune out the way a repeated notification does.

Picking between them

Sorted by what you're actually optimizing for:

• Most natural-sounding voice, don't mind a metered bill: Zangy.
• Flat "unlimited" and don't mind $43/month or iOS-only: ToDoCall.
• Cheapest option, and a themed alarm sound is enough: Simboo — just go in knowing it's not placing a real call.
• A real call, a predictable bill, and an escalation you control, inside the US or Canada, on iOS: FocusCall.

None of these four has won anything yet. The market is new enough that the honest answer to "which one" is still "whichever tradeoff you'd rather live with" — which is exactly why we wrote this instead of a ranked list with a winner at the top.