What Is Synthetic Phonics, and How Do Apps Teach It?
"Synthetic phonics" turns up on curriculum pages, school newsletters and app store listings, usually without ever being defined. Here's the plain version, and what it actually looks like when a reading app is built around it.
Word Safari's whole phonics ladder is built on this approach, which is the honest reason it shows up as the example throughout this page.
Synthetic phonics, defined simply
"Synthetic" here doesn't mean artificial. It means synthesis, building something up from its parts.
A child taught with synthetic phonics learns individual letter sounds first, "s", "a", "t", and so on, and is then taught to blend them left to right to build a whole word: s-a-t becomes "sat". New sounds, including digraphs like "sh" and "ch" where two letters make one sound, are introduced in a fixed, deliberate order, and each one gets practised in real words before the next one arrives.
The word "decodable" comes from this same idea. A decodable text is one built entirely from sounds a child has already been taught, so sounding it out is always genuinely possible rather than a guess dressed up as reading. That's different from an approach that leans on a child memorising a word's shape as a whole, or guessing from a picture; synthetic phonics asks a child to actually decode the letters in front of them, every time.
A worked example, sound by sound
It's easier to see than to describe, so here's one word walked through slowly.
Take the word "ship". A child who already knows the sounds "sh", "i" and "p" sees the letters s-h-i-p, first identifies that "sh" is a digraph, two letters making one sound, rather than trying to sound "s" and "h" separately. They say each sound in turn, "sh", "i", "p", and then blend them together faster and faster until the separate sounds fuse into the word "ship". Nothing about that process depends on the child having seen the word "ship" before; the same three sounds, blended the same way, would work for "shin" or "shop" too.
That's the whole mechanism, repeated across thousands of words as more sounds get taught. It's also why a decodable text matters so much in practice: a story that uses "ship" before a child has met the "sh" digraph is quietly asking them to guess, not decode, which undoes the point of teaching the method in the first place.
Not every English word is fully regular, of course. A small set of common words, often called "tricky" or "common exception" words, don't follow the rules cleanly ( "the" and "said" are typical examples) and are usually taught by sight alongside the phonics sequence, not instead of it.
Why it's the default in most English reading curricula
English spelling is famously inconsistent, but the sound system underneath it is far more regular than it looks once it's taught explicitly and in order. That regularity is exactly what a systematic, sounds-first method is built to exploit, and it's a large part of why synthetic phonics has become the standard recommendation in most national curricula and reading programmes.
In England, for instance, government guidance on choosing a phonics teaching programme centres on validated systematic synthetic phonics programmes, and schools are checked on it directly through the phonics screening check in Year 1. Exact requirements vary by country and change over time, so treat any specific rule you've heard about as worth confirming with the relevant education authority rather than taking on faith from any single website, including this one.
How an app puts synthetic phonics into practice
The theory is simple; building it into software honestly is the harder part. A few things separate an app that genuinely teaches synthetic phonics from one that just uses the phrase in its marketing:
- A fixed, taught order for sounds. New letters and digraphs appear in a deliberate sequence, not randomly, and each one gets repeated practice before the next is introduced.
- A hard decodability rule for every story and word list. If a piece of content uses a sound that hasn't been taught yet at a child's stage, it shouldn't appear. This is the single easiest thing for an app to fake and the easiest thing for a parent to check by watching a session or two.
- Blending practice, not just recognition. Tapping the right letter when you hear its sound is a different skill from blending three or four sounds together into a whole word. A good app spends real time on the second one.
Word Safari's own decodable stories follow this rule strictly: every story is built only from sounds already introduced at that stage, so a child is never asked to sound out something they have no tools for yet.
Two approaches, described plainly
A synthetic-phonics session
Starts from individual sounds, blends them into words in a fixed taught order, and only ever uses words a child can actually decode with sounds they already know.
A whole-word or sight-only session
Asks a child to memorise how a word looks as a shape, or to guess from context or a picture, without necessarily breaking it down into its individual sounds first.
The phonics ladder underneath Word Safari
Real counts from the app's own content, not marketing round numbers.
Single letters to digraphs and trigraphs, introduced in a fixed taught order.
Each tier builds on the sounds the one before it already taught.
Every story uses only sounds a child has already met, at every tier.
See it before you commit to anything
No card, no sign-up wall. Play a real round right now.
Built to be safe to hand a child
The same three things are true on every page of Word Safari.
Questions parents ask
Is synthetic phonics the same as phonics in general?
Phonics is the broad idea that letters represent sounds. Synthetic phonics is a specific, structured way of teaching it: sounds first, blended left to right into whole words, in a fixed taught order, rather than starting from whole words and breaking them apart.
Does every child need synthetic phonics specifically?
Most children learning to read English benefit from a systematic, sounds-first approach, which is why it's the default in most national curricula. If you have specific concerns about how your child is learning, their teacher or a qualified reading specialist is the right person to ask, not this page.
Does synthetic phonics work for children learning English as a second language?
It's widely used for exactly that, since it teaches the sound system explicitly rather than assuming a child already has a large spoken vocabulary to draw on. Word Safari's own content is also offered in German and Russian for the same reason.