Head to head
Sphero Mini vs BOLT
Both publish Draw, Blocks and Text. The price gap is not about coding at all — it is about what the robot can show you.
By Sawyer V. · Published
The short answer
Buy Sphero Mini unless one of four published specs matters to you. Sphero gives both robots the same three canvases — Draw, Blocks and Text. BOLT adds an 8x8 programmable LED matrix, Python alongside JavaScript, a waterproof shell and “all-day battery life” against Mini’s published “45 Min Playtime”. If none of those four is the deciding factor, the cheaper robot teaches the same thing.
Block & Beaker earns a commission when you buy through our links, at no cost to you. It never changes a ranking, and we say so plainly when the right answer is the cheaper set, or nothing at all. Full disclosure · How we pick.
At a glance
The picks, ranked
Tap any row to jump to the full reasoning. Prices come live from Amazon where we have them and read “check price” where we don’t — never a number we cannot stand behind today.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Best value, same curriculum Sphero Mini Draw, Blocks and Text on a ping-pong-ball-sized robot, with cones and pins. | Eight and up, one child, sessions rather than afternoons | |
| 2 |  Best if the program needs to be visible Sphero BOLT An 8x8 programmable matrix, Python, a waterproof shell and all-day battery. | Eight to fourteen, and anywhere water or a long session is involved | |
| 3 |  Neither, if they are under eight Sphero indi At-Home Learning Kit Color cards read by an on-board sensor — the program is the floor. | Four to seven, with no device | |
| — |  Spend BOLT money here instead, if they build Makeblock mBot Neo (mBot2) A buildable robot with blocks, Python and Arduino C on a 240 MHz controller. | Eight and up, for a child who wants the machine as well as the code |
4 picks, including 1 we tell you to skip. Ages shown are the manufacturer’s own rating, not ours.
The four specs that differ
The arithmetic
Sphero Mini against Sphero BOLT, as published
| Programming canvases | Both — Draw, Blocks and Text |
|---|---|
| Text language | Mini: Text in Sphero Edu · BOLT: JavaScript or Python |
| Display | Mini: a codeable LED · BOLT: 8x8 programmable LED matrix |
| Battery | Mini: “45 Min Playtime”, micro USB · BOLT: “all-day battery life”, inductive |
| Shell | Mini: interchangeable, designed to open · BOLT: “durable and waterproof” |
| In the box | Mini: 3 cones, 6 bowling pins · BOLT: charging base, 360-degree protractor |
| Sensors | Mini: gyroscope, motor encoders, accelerometer · BOLT: magnetometer plus programmable set |
| Stated age | Both ages 8+ |
Who should buy Mini
A first coding robot at eight or nine. The three canvases are the whole lesson at this age, and they are the same ones BOLT publishes.
A household where sessions are short anyway. Forty-five published minutes is a limit only if a child would otherwise go longer.
A classroom or club buying several. At this price the arithmetic favors more robots over a better one, and Sphero publishes the same app for both.
A child who loses things. Both are sealed objects, but Mini is the one you can replace without flinching.
Who should buy BOLT
A child who will reach text coding. Python rather than only JavaScript is a published difference with years in it.
Anyone who wants the robot to report back. The 8x8 matrix is the only output device in this comparison, and output is what makes a program debuggable.
Water, outdoors, or a yard. Sphero publishes a waterproof shell for BOLT and says nothing of the kind for Mini.
Long unsupervised stretches. “All-day battery life” against 45 minutes is the difference between a toy that is available and one that is charging.
Worth knowing before you buy
So which one
Default: Sphero Mini. Same canvases, a fifth of the money.
They already code and want Python: BOLT.
There is a toddler in the house: BOLT, for the sealed shell.
They are under eight: indi, and neither of these yet.
Say the unwelcome thing
Do not pay the BOLT premium expecting more coding
It is the obvious assumption and it is wrong. Sphero publishes the identical three canvases on both robots, in the same app, with the same activity library. The premium buys a display, a language, a battery and a waterproof shell — all real, none of them “more coding”. If the budget is tight, the cheaper robot is not a compromised version of the curriculum.
Where to go next
Coding robot balls puts both next to indi and the buildable alternatives, coding toys for 8 and 9 year olds covers the age both publish, and from toy to real code covers where text coding leads.
In full
Every pick, and what is wrong with it
Published specifications only, each linked back to the page it came from. Where a manufacturer publishes nothing, the row says so — we do not fill blanks in.
1. Best value, same curriculum
Sphero Mini
Sphero · M001BRW-049 (Mini Blue) · maker rates it 8+
Draw, Blocks and Text on a ping-pong-ball-sized robot, with cones and pins.
- Size
- “about the same size as a ping pong ball”
- Programming
- “three programming canvases: Draw, Blocks, and Text” in the Sphero Edu app
- Sensors
- “a gyroscope, motor encoders, and accelerometer”, plus a codeable LED
- Playtime
- “45 Min Playtime”, charged over micro USB
Sphero publishes “three programming canvases: Draw, Blocks, and Text” in the Sphero Edu app, a gyroscope, motor encoders and an accelerometer, a codeable LED, “45 Min Playtime” over micro USB, 3 cones and 6 bowling pins, and an interchangeable shell, rated ages 8+.
The point of this comparison is that the curriculum is identical. Everything a child learns about sequencing, loops and conditionals on BOLT is available here, in the same app, through the same three representations.
Forty-five minutes is the honest cost. It is one sitting, and it means the robot is charging when a child wants it twice in an evening. See the full review.
Replay signal
- Open-ended or one-shot
- Open-ended once the activity library opens up — the robot is a controller, a game piece and a programming target
- Does anything run out
- Nothing runs out; rechargeable
- Room to grow
- Draw, then Blocks, then text — the same three canvases the larger Sphero robots publish
- Adult required
- A phone or tablet has to be free, and Sphero publishes adult supervision under eight
Why we say so: Sphero publishes three programming canvases — Draw, Blocks and Text — on a robot the size of a ping pong ball, and a 45-minute playtime. Read those two figures together: the canvases are the same ladder the $179 BOLT publishes, and the 45 minutes is the honest reason this is the cheap one.
What’s wrong with it
45 minutes of published playtime, and a single LED rather than a display.
| Size | “about the same size as a ping pong ball” |
|---|---|
| Programming | “three programming canvases: Draw, Blocks, and Text” in the Sphero Edu app |
| Sensors | “a gyroscope, motor encoders, and accelerometer”, plus a codeable LED |
| Playtime | “45 Min Playtime”, charged over micro USB |
| In the box | Robot, micro USB charging cable, 3 Mini Traffic Cones and 6 Mini Bowling Pins |
| Apps | Sphero Edu (iOS, Android, Amazon Fire OS, macOS, Windows, Chrome OS) and Sphero Play (iOS, Android, Fire OS) |
| Shell | Interchangeable — published as designed to open up |
| Stated age | Ages 8+ |
| Consumables | None — rechargeable |
Every figure above is from Sphero, Sphero Mini. Blanks are shown as “not published” rather than filled in.
2. Best if the program needs to be visible
Sphero BOLT
Sphero · K002ROWFFP · maker rates it 8+
An 8x8 programmable matrix, Python, a waterproof shell and all-day battery.
- Display
- “advanced programmable sensors and 8x8 LED matrix”
- Programming
- “three ways to program (Draw, Blocks, and Text coding with JavaScript or Python)”
- Shell
- “durable and waterproof design”
- Battery
- “all-day battery life”, inductive charging
Sphero publishes “advanced programmable sensors and 8x8 LED matrix”, “three ways to program (Draw, Blocks, and Text coding with JavaScript or Python)”, a “durable and waterproof design”, “all-day battery life” with inductive charging, and a 360-degree protractor in the box, rated ages 8+.
The matrix is the reason to pay. Output is the hardest thing to get from a rolling robot: without a display, the only way a program can report anything is by moving. Eight by eight pixels is enough for a number, an arrow or a face, which turns “why did it do that” into something a child can read off the robot.
Python is the second reason and it has a longer tail. A twelve-year-old who outgrows blocks moves to a language they will meet again. See the full review.
Replay signal
- Open-ended or one-shot
- Open-ended — a programmable 8x8 display on a rolling robot has no finished state
- Does anything run out
- Nothing runs out; inductive charging rather than cells
- Room to grow
- Draw to Blocks to JavaScript or Python, on the same robot
- Adult required
- Not after the first pairing; the published lesson material is aimed at the child
Why we say so: Sphero publishes an 8x8 LED matrix, a waterproof shell, all-day battery life and text programming in JavaScript or Python. The matrix is the specification that separates this from every other coding ball: the robot can display what the program is doing, so a child debugs by looking at it rather than guessing.
What’s wrong with it
Three and a half times the price for the same three canvases.
| Display | “advanced programmable sensors and 8x8 LED matrix” |
|---|---|
| Programming | “three ways to program (Draw, Blocks, and Text coding with JavaScript or Python)” |
| Shell | “durable and waterproof design” |
| Battery | “all-day battery life”, inductive charging |
| In the box | Inductive charging base with USB charging cable, and a 360-degree protractor with heading, directions and clock |
| Sensors named | Magnetometer, plus the programmable sensor set |
| Apps | Sphero Edu (Chrome, Mac, PC, iOS, Android, Kindle) and Sphero Play |
| Stated age | Ages 8+ |
| Consumables | None — rechargeable |
Every figure above is from Sphero, Sphero BOLT. Blanks are shown as “not published” rather than filled in.
3. Neither, if they are under eight
Sphero indi At-Home Learning Kit
Sphero · indi · maker rates it 4+
Color cards read by an on-board sensor — the program is the floor.
- Contents
- 1 indi robot, 30 color cards, charging cable, 2 sticker sheets, activity booklet, tape to fix the cards down
- Card mix
- 5 green, 4 yellow, 3 red, 2 purple, 3 teal, 3 orange, 5 blue, 5 pink
- How it is coded
- An on-board color sensor reads the cards; no screen needed
- Play time
- “2+ hours of play on a full charge”, USB charging
Sphero publishes 1 indi robot, 30 color cards, an on-board color sensor needing no screen, “2+ hours of play on a full charge”, and an optional Sphero Edu Jr block app, rated ages 4 and up.
Both robots in this comparison publish 8+. If the child is six, this is the answer and the comparison above is for a later birthday. See Mini against indi.
Replay signal
- Open-ended or one-shot
- Very open-ended for the age: the child lays the track out across the whole floor
- Does anything run out
- Nothing runs out; recharges by USB
- Room to grow
- Screen-free cards first, then the same robot accepts block coding in the free app when the child is ready
- Adult required
- Not after setup — the program is the floor, and the child builds it
Why we say so: Sphero publishes the 30-card color breakdown, the on-board color sensor as the programming method, the 2+ hours per charge, and the optional step up to drag-and-drop blocks in Sphero Edu Jr.
What’s wrong with it
Not a ball, and 30 cards need a clear flat space.
| Contents | 1 indi robot, 30 color cards, charging cable, 2 sticker sheets, activity booklet, tape to fix the cards down |
|---|---|
| Card mix | 5 green, 4 yellow, 3 red, 2 purple, 3 teal, 3 orange, 5 blue, 5 pink |
| How it is coded | An on-board color sensor reads the cards; no screen needed |
| Play time | “2+ hours of play on a full charge”, USB charging |
| Optional app | Sphero Edu Jr drag-and-drop blocks |
| Stated age | Ages 4 and up |
Every figure above is from Sphero, indi At-Home Learning Kit. Blanks are shown as “not published” rather than filled in.
Skip this one
Makeblock mBot Neo (mBot2)
Makeblock · mBot2 · maker rates it 8+
A buildable robot with blocks, Python and Arduino C on a 240 MHz controller.
- Controller
- CyberPi — Xtensa 32-bit LX6 dual-core at 240 MHz, 8 MB flash, 8 MB PSRAM
- Programming
- Scratch-style blocks, Python in mBlock, and Arduino C/C++ via the Arduino IDE
- Sensors
- On-board light, microphone, gyroscope and accelerometer, plus ultrasonic, quad RGB, temperature and IR modules
- Battery
- Built-in 2500 mAh LiPo, about 1 hour to charge, about 5 hours of play
Makeblock publishes the CyberPi controller at 240 MHz, three environments including Python and Arduino C/C++, four on-board sensors, a 2500 mAh LiPo giving about five hours, and 60+ modules, rated ages 8+.
Marked as the skip only in the sense this page means: if you have decided to spend BOLT money, this is the purchase that deserves a second look first, because it buys a mechanism rather than a display.
Replay signal
- Open-ended or one-shot
- Open-ended at the top of the range — this is the one a child does not outgrow at eleven
- Does anything run out
- Nothing runs out; rechargeable
- Room to grow
- Blocks, then Python, then Arduino C on the same robot, with 60+ add-on modules
- Adult required
- Not for driving it. Probably for the first Python session
Why we say so: Makeblock publishes the processor, the three programming environments on one robot, the 2500 mAh battery figures and the 60+ compatible modules. Blocks-to-Python-to-C on one chassis is the published upgrade path, and it is why this survives the year a child gets bored of pressing buttons.
What’s wrong with it
An assembly job, a computer, and nothing sealed.
| Controller | CyberPi — Xtensa 32-bit LX6 dual-core at 240 MHz, 8 MB flash, 8 MB PSRAM |
|---|---|
| Programming | Scratch-style blocks, Python in mBlock, and Arduino C/C++ via the Arduino IDE |
| Sensors | On-board light, microphone, gyroscope and accelerometer, plus ultrasonic, quad RGB, temperature and IR modules |
| Battery | Built-in 2500 mAh LiPo, about 1 hour to charge, about 5 hours of play |
| Expansion | 60+ compatible modules, up to 10 connected at once, 8 motor and servo ports |
| Stated age | Ages 8+ |
Every figure above is from Makeblock, mBot2 coding robot kit. Blanks are shown as “not published” rather than filled in.
We are not putting a buy button on this one. It is easy enough to find if you want it anyway — but we would rather send you to something that gets played with twice.
Questions people actually ask
Frequently asked
Is Sphero BOLT worth the extra money over Mini?
Only for four published reasons: an 8x8 programmable LED matrix, Python alongside JavaScript, a waterproof shell, and all-day battery life against Mini's published 45-minute playtime. The three programming canvases - Draw, Blocks and Text - are identical on both.
Do Sphero Mini and BOLT use the same app?
Yes. Sphero publishes both for the Sphero Edu app, with Edu listed for Chrome, Mac, PC, iOS, Android and Kindle, plus the Sphero Play app for home use. The activity library is the same.
How long do Sphero Mini and BOLT last on a charge?
Sphero publishes "45 Min Playtime" for Mini, charged over micro USB, and "all-day battery life" for BOLT with inductive charging. That is the most practical difference between them day to day.
Can Sphero Mini be programmed in Python?
Sphero publishes Mini as having a Text canvas in Sphero Edu, and publishes BOLT specifically as "Text coding with JavaScript or Python". If Python is the goal, BOLT is the one that names it. From toy to real code.
Is Sphero BOLT waterproof?
Sphero publishes a "durable and waterproof design" for BOLT. It publishes no waterproofing claim for Mini, whose shell is instead published as interchangeable and designed to open up.
Which Sphero for an 8 year old?
Both publish ages 8+. Mini if it is a first coding robot or the budget matters; BOLT if the child already codes, will want Python, or plays outdoors. For a child under eight, indi publishes 4 and up and needs no screen. Sphero Mini vs indi.
Sources
Where these figures came from
Every specification on this page traces to one of these. If a manufacturer publishes nothing on a point, the page says so rather than filling the gap.
Read next
Where to go from here
Back to Coding & Robotics, or read how we pick.