Tommee Tippee
GOPrep Portable Formula Feedmaker Kit
7.1/10 overall£34.99
A portable dual-flask kit that makes a single formula feed on the go in about two minutes, for parents who need prep away from the kitchen rather than at home.
Check priceThe verdict
The GOPrep kit, £34.99, is a portable dual-flask system that makes one safe, correctly cooled formula feed in about two minutes away from home. Best as a travel companion to a countertop machine like Perfect Prep or Formula Pro, for parents who already prep at home and want a reliable on-the-go option. Skip it as your only prep solution — it only makes one feed at a time and needs manual powder measuring.
Where the Perfect Prep Day & Night and Baby Brezza machines in this category are countertop appliances built for repeated use in one place, the GOPrep is solving the away-from-home version of the same problem. One insulated flask holds boiling water, the other rapidly cools a mixed feed to a safe temperature, with a star-shaped indicator on the lid that changes colour once it's ready — roughly two minutes from start to a feedable bottle, according to Tommee Tippee.
At £34.99 it's far cheaper than either prep machine here, which makes sense given it does one thing (a single on-the-go feed) rather than repeated one-touch dispensing at home. It's not a replacement for a Perfect Prep or Formula Pro if you're preparing feeds all day; it's better thought of as the travel companion to one of those machines, similar to how the Nuby powder dispensers pair with the machines already in this category rather than compete with them directly.
Cleaning is more involved than a simple bottle: two narrow flasks need washing after each use, and while it's dishwasher-safe on the top rack, that's less convenient than wiping down a single unit. Hygiene-wise it leans on genuinely boiling water to kill bacteria before cooling, which follows NHS guidance for made-up formula, but the powder measuring itself is still manual — there's no automated dosing the way the Baby Brezza claims.
Suited to parents who already have a machine at home and want a reliable away-from-home option, rather than anyone looking for their only formula prep solution — for that, the machines elsewhere in this category do more of the work.
Is the GOPrep Portable Formula Feedmaker Kit worth it?
- Makes one safe, correctly-cooled feed in about two minutes away from home
- Visual temperature indicator removes guesswork
- Far cheaper than a full prep machine
- Dishwasher-safe top rack
What are the downsides of the GOPrep Portable Formula Feedmaker Kit?
- Two flasks to wash after every use
- Manual powder measuring, no automated dosing
- Only useful for one feed at a time, not a countertop replacement
Specs
- System
- Dual insulated flask, one hot/one cool
- Weight
- 873g
- Cleaning
- Dishwasher safe, top rack
- Indicator
- Temperature-sensitive star, turns blue when ready
- Prep time
- Approx. 2 minutes per feed
- Dimensions
- 25.5 x 6.9 x 6.9cm
How we scored it
Prep Speed
How quickly it gets a bottle from empty to feeding temperature, including at 3am.
About two minutes for one feed once you're out and about, though it can't match a countertop machine's one-touch repeat dispensing at home.
Accuracy & Hygiene
Consistency of powder-to-water ratio and how easy the system is to keep clean and free of bacteria.
Ease of Cleaning
Number of parts, descaling needs, and dishwasher compatibility.
Two narrow flasks to rinse and dry after every use is more fiddly than a single-unit bottle, even with dishwasher-safe parts.
Weighted by importance for this category — see our editorial policy for how we test.
How it compares
|  |  |  | |
|---|---|---|---|---|
| Price | £34.99 | Around £149.99 | £169.99 | Around £180 |
| Overall score | 7.1/10 | 7.8/10 | 7.8/10 | 7.6/10 |
| Weight | 873g | — | 3.45kg | — |
| Cleaning | Dishwasher safe, top rack | — | — | Hopper and dispensing chute need regular cleaning |
| Prep time | Approx. 2 minutes per feed | Under 2 minutes | — | Under 20 seconds per bottle |
Frequently asked questions
How does the GOPrep work?+
One insulated flask holds boiling water, the other rapidly cools a mixed feed to a safe temperature, with a star-shaped indicator on the lid that changes colour once it's ready — roughly two minutes from start to a feedable bottle, according to Tommee Tippee.
Is it a replacement for a machine like Perfect Prep or Formula Pro?+
No — it's not a replacement if you're preparing feeds all day; it's better thought of as the travel companion to one of those machines, similar to how the Nuby powder dispensers pair with the machines in this category rather than compete with them.
Does it use boiling water for hygiene?+
Yes — hygiene-wise it leans on genuinely boiling water to kill bacteria before cooling, which follows NHS guidance for made-up formula, but the powder measuring itself is still manual.
Is it easy to clean?+
It's dishwasher-safe on the top rack, but two narrow flasks need washing after each use, which is more fiddly than rinsing a single unit.