Small Ball Tracker vs Rainbow Color Sorting Balls: Which Toy First?

Quick answer

If you are choosing one first ball toy, pick the Small Ball Tracker for babies who are sitting and ready to watch a ball roll. Choose the Rainbow Ball Set when your child already has a tracker, sorting cups, or an object permanence box and needs more balls for matching and open-ended play. The two toys are not rivals; they work best in sequence, with the tracker first and the extra balls second.

The Small Ball Tracker and the Rainbow Ball Set look like two versions of the same idea, but they ask a child to do different things. One is a complete tracking toy with a frame and oversized balls; the other is a set of five painted balls that extends toys you may already own.

That difference decides which one to buy first. A baby who is just learning to follow a moving object needs the tracker. A toddler who is sorting, matching, or replacing lost balls needs the Rainbow Ball Set. Here is how the supplied facts break down, and where each toy stops being the right fit.

What each toy actually is

The Small Ball Tracker is a pre-assembled bamboo tracker with an open-rail design. It is built for compact spaces and small hands, and it encourages left-to-right visual tracking, the same pre-reading skill as the original Ball Tracker. Its oversized wooden balls are part of the set, so a baby can use it right out of the box without buying anything else.

The Rainbow Ball Set is not a tracker. It is five painted wooden balls made for color recognition, sorting, matching, and open-ended play. The balls are compatible with the Montessori & Me Ball Tracker, Color Sorting Ball Set, and Object Permanence Box, so they work as replacements or as extra pieces to extend a toy you already have.

• Buy the tracker if your child has no ball toy yet.
• Buy the ball set if the toy exists but the balls keep disappearing.

The skill each one builds

Tracking is a visual skill: the eyes follow a ball from one side to the other, which supports later reading and writing readiness. The Small Ball Tracker is designed around that single repeated action, so it gives a baby many chances to practice it in one short sitting.

Sorting is a cognitive skill: noticing that two balls differ in color, then grouping or matching them. The Rainbow Ball Set supports that work because it supplies five distinct colors in one handful. Neither skill replaces the other, and most families will eventually want both, but the order matters more than the purchase.

• Tracker first for babies around the sitting stage.
• Ball set first only if you already own a compatible toy.

Size, safety, and space

The Ball Tracker uses large 46mm tracker balls and is described as eliminating choking hazards, with a stable base for repeated use. The Small Ball Tracker keeps the same benefits in a smaller footprint, which matters in apartments or rooms where the full-size tracker would crowd the play area.

The Rainbow Ball Set is sized with the child in mind, but it is a set of loose balls rather than a framed toy. Loose balls roll, get lost, and end up in mouths if an older baby is not supervised. If your child still puts everything in their mouth, the framed tracker is the safer first choice.

• Measure your shelf or floor space before choosing the full-size tracker.
• Keep loose balls in a small basket so they do not scatter.

Cost and long-term value

The Small Ball Tracker is the larger single purchase, and it includes everything needed to start. The Rainbow Ball Set costs less and does less on its own, but it can refresh a tracker, a sorting set, or an object permanence box that has lost pieces or grown stale.

The practical sequence for most families is tracker first, then a ball set when the child is ready for color matching or when original balls go missing. Buying the ball set before any compatible toy exists usually leaves you with five nice balls and nothing to roll them through.

• Check which compatible toys you already own before buying the ball set.
• A replacement set is cheaper than replacing a whole tracker.

Trade-offs to weigh before you buy

• Complete toy vs add-on set: The Small Ball Tracker arrives ready to use with its own balls. The Rainbow Ball Set only works fully when you already own a compatible tracker, sorting set, or object permanence box. No compatible toy at home? Start with the tracker.
• One skill vs many uses: The tracker focuses on visual tracking through a repeated rolling action. The Rainbow Ball Set covers color recognition, sorting, matching, and open-ended play, but you have to set up those activities yourself. Choose based on the skill you want to practice now.
• Framed vs loose pieces: A framed tracker keeps its balls contained and is described as eliminating choking hazards with its large balls. Loose rainbow balls are easier to lose and need supervision with babies who mouth objects. For mouthing babies, the framed tracker is the lower-risk option.
• One purchase vs two: The tracker costs more up front but includes everything. The ball set costs less but often leads to buying a tracker or sorting toy later to use it fully. Budget for the sequence, not just the first box.

Product facts at a glance

• Small Ball Tracker: Pre-assembled bamboo ball tracker with an open-rail design, built for compact spaces and small hands, encouraging left-to-right visual tracking like the original Ball Tracker. It is a complete first tracking toy that works immediately, with no separate balls to buy.
• Rainbow Ball Set - Multicolored Replacement Ball: Five painted wooden balls for color recognition, sorting, matching, and open-ended play, compatible with the Montessori & Me Ball Tracker, Color Sorting Ball Set, and Object Permanence Box. It extends or repairs toys you already own rather than standing alone as a first purchase.
• Ball Tracker: Uses large 46mm tracker balls, described as eliminating choking hazards, with a stable base and an open-rail design for left-to-right and right-to-left visual tracking. If floor space allows, the full-size tracker gives the same tracking work with a larger, more stable frame.

Which should you choose?

Best for

• Babies who are sitting and ready to follow a rolling ball
• Families with limited floor space who want a compact tracking toy
• Parents who want one complete toy with no extra pieces to buy

Not for

• Children who already own a compatible tracker or sorting set and just need more balls
• Families looking specifically for color matching and sorting practice
• Babies who still mouth loose objects and would be better served by a framed toy

Start with the Small Ball Tracker if your child has no ball toy yet, then add the Rainbow Ball Set once sorting, matching, or replacement balls become useful. Bought in that order, the two toys cover tracking first and color work second without duplicating each other.