

Where to watch
Cast · Directed by Amy Schatz
More from Amy Schatz · Director

Classical Baby: The Lullaby Show
2017

The Runaway Bunny
2021 · 7.0

Kids Are Punny
1998 · 6.3

A Child's Garden of Poetry
2011 · 4.0

Goodnight Moon & Other Sleepytime Tales
1999 · 7.3

What Happened on September 11
2019 · 6.6

We Are the Dream: The Kids of the Oakland MLK Oratorical Fest
2020 · 6.3

Through a Child's Eyes: September 11, 2001
2002

Stand Up & Shout: Songs from a Philly High School
2023 · 5.0

An Apology to Elephants
2013 · 7.9
See all fromAmy Schatz
More like this

42 Up
1999 · 7.6

My Mom Jayne
2025 · 8.0

Come See Me in the Good Light
2025 · 7.2

180° South
2010 · 7.2

Looking for Richard
1996 · 6.8

A Toxic Love Story
2026 · 6.4

Sidney
2022 · 7.0

35 Up
1991 · 7.6

Avatar: The Deep Dive - A Special Edition of 20/20
2022 · 7.2

Report
1967 · 6.1

Dawg Fight
2015 · 6.4

S4: The Bob Lazar Story
2026 · 8.3
The Number on Great-Grandpa's Arm — streaming FAQ
Which OTT platform streams The Number on Great-Grandpa's Arm?
The Number on Great-Grandpa's Arm is streaming on HBO Max in Australia. It's not currently on Netflix.
Is The Number on Great-Grandpa's Arm on Netflix?
No, The Number on Great-Grandpa's Arm is not on Netflix in Australia as of September 2026. It's currently on HBO Max.
Is The Number on Great-Grandpa's Arm on Amazon Prime Video?
No, The Number on Great-Grandpa's Arm isn't on Amazon Prime Video in Australia right now. It's on HBO Max instead.
Where can I watch The Number on Great-Grandpa's Arm for free?
The Number on Great-Grandpa's Arm is available on HBO Max in Australia, but you'll need an active subscription — there's no free option right now.
HBO Max
HBO Max Amazon Channel