Story Apps Compared
Gramms and Oscar Stories alternatives in a real family voice.
Published by Spoken Letter · 3 min read
Three apps can put a story in a child's ears tonight, and they start from different places. Gramms and Oscar Stories begin with words an AI writes. Spoken Letter begins with a relative pressing record. Neither approach is wrong; they answer different questions. We read both companies' websites in October 2026, and this is what each one says it does.
What Each One Does
Gramms: AI-Written Stories, Read in a Voice You Choose
Gramms is an iPhone app for children aged 3 to 10. You give it your child's name, age and an idea for tonight, and it writes a new story, in chapters that carry on from one night to the next. It reads the story aloud in a default voice. Or a grandparent or parent records a short passage, Gramms makes a private reading voice from it, and later stories are read in that voice. Its website says plainly that the words are AI-written. Three new stories a week are free; Premium costs $5.99 a month or $49.99 a year. Stories play in the app, in six languages.
Oscar Stories: Personalized AI Stories With Pictures
Oscar Stories is an app for iPhone and Android that generates illustrated bedtime stories with AI. Your child can be the hero, you can add family and friends as characters, and some stories are set in classic worlds such as Alice in Wonderland or The Jungle Book. Stories can also be turned into audiobooks with AI voices. The first stories are free; after that, Oscar charges a small fee per story.
Spoken Letter: The Relative Tells the Story
In Spoken Letter, a grandparent, aunt or family friend records the story in their own voice, or uploads a voice memo or WhatsApp audio they already have. Gemini helps shape the idea into a script that suits a child, and the child hears that recording, played back as it was made. (The one exception is Voice Restoration, a small consent-first pilot for an adult recreating their own voice.) The parent then sends the story to their connected Yoto account, or downloads the MP3 for a Make Your Own card. A brand-new card needs one manual link, once in the Yoto app. The child never uses the app.
Choosing
When Gramms or Oscar Stories Fits Better
If you want a fresh story every night without anyone writing or recording one, an AI story app does that, and Spoken Letter does not. Oscar Stories adds pictures to look at together. Gramms adds chapters that remember last night, and it is built for a grandparent who records one short passage and then lets the app do the reading. Those are real strengths. For some families, they are the whole point.
When Spoken Letter Fits Better
Spoken Letter suits families who want the child to hear a relative's own telling: their words, their pauses, the joke Grandma always makes at the same spot. It suits homes built around a Yoto Player, where the story should play from a card with no screen. Neither Gramms' nor Oscar Stories' website mentioned Yoto when we checked. And it suits a parent who wants the final say, because nothing reaches the child until the parent sends it to Yoto or downloads the MP3. The first story is free, with no payment card needed.
A Worked Example: Two Kinds of Story in One House
Say a family uses an AI story app on weeknights, because a new adventure starring the cat next door needs nothing but an idea. On Sunday, their grandmother records a story on Spoken Letter about meeting their grandfather at a bus stop in 1971. The parents send it to their Yoto account, and the card joins the bedtime pile. The two do not compete. One gives the children a new story every night. The other keeps a voice the family will want to hear again in twenty years.
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