During-effort fuel · gel · reviewed 26 Aug 2026

Spring Energy Speednut 4

Item: Spring Energy Speednut
Rating: 4
Author: Lourenço Faria e Maia

Spring Energy / 52 g sachet / 12 g carbohydrate / $4.35

A whole-food, nut-and-fruit gel that's mostly fat rather than carbohydrate (19 g of fat against just 12 g of carbohydrate) and by far the most expensive gel here at 36.3 cents a gram of carbohydrate.

Score breakdown

Each dimension below is scored 0 to 100 against a fixed scale, not against the rest of the catalog, so adding a product never moves this number. The overall score is the average of the dimensions this product declares data for. How the scales are set →

4/100

Weak

Based on 3 of 4 measures ?A dimension a product doesn't declare is left out of its average rather than counted against it, so this score reflects fewer measures than a product with a full panel.

Carb density ?How much fuel one sachet carries. 90 g is the ceiling here, matching the top of the range cited for multi-transportable-carb intake.13

Value (cost/gram) ?Price of one gram of carbohydrate. Not physiological: a market-based scale from 15 cents/g (0) to 2 cents/g (100).0

Gut comfort ?A proxy, not a taste or tolerance test: shorter ingredient lists score higher, from 15 ingredients (0) to 1 (100). Nobody has actually run these through anyone's gut for this score.0

Cost per gram of carbohydrate

36.3 cents/g

Glucose : fructose · not disclosed

n/d

Comparison

5 of 38 gels held

Prices per single sachet at the cheapest box size we track. Best in green, worst in red, across the gels shown.

Measure	Spring Energy Spring Energy Speednut	Maurten Maurten Gel 100	Science in Sport SiS Beta Fuel Gel	Precision Fuel & Hydration Precision Fuel PF 30 Gel	NEVERSECOND NEVERSECOND C30 Gel
Overall scoreAn average of the various variables measured.	4	47	58	49	42
CarbohydrateHow much fuel one sachet carries.	12 g	25 g	40 g	30 g	30 g
Glucose : fructoseGoverns how fast you absorb it. More fructose, higher ceiling.	n/d	1 : 0.8	1 : 0.77	1 : 0.5	1 : 0.5
SodiumAgainst 400 to 1000 mg an hour typically lost in sweat.	6 mg	20 mg	30 mg	not declared	200 mg
CaffeineA preference, not a quality, so it is not scored.	50 mg	0 mg	0 mg	0 mg	0 mg
ProvenanceWhether that ratio is read off the panel, computed from it, or inferred.	Not disclosed	Stated	Derived	Stated	Stated
Price per sachetWhat one costs. Not comparable across sachet sizes.	$4.35	$3.75	$2.50	$3.12	$3.50
Cost per gramThe only price that compares across sachet sizes.	36.3 cents	15 cents	6.3 cents	10.4 cents	11.7 cents
Sachets for 90 g/hrHow many you open an hour to hold a 90 g/hr target.	7.5	3.6	2.3	3.0	3.0

Verdict

what it does · what it costs

What it does well

Genuine whole-food ingredient list: fruit, rice, nuts, and coconut oil, nothing synthetic.
250 kcal per sachet from a mix of fat and carbohydrate, a different fuel profile than every other gel here.
50 mg of caffeine included.

What it costs you

At 36.3 cents a gram of carbohydrate, more than five times SiS Beta Fuel's price for the same nutrient.
Only 6 mg of sodium, among the lowest of any gel reviewed.
Contains tree nuts, a real constraint for some athletes; high fat content is atypical for a during-effort gel and may sit heavier on some stomachs than a standard carb gel.

Where to buy

Prices and links as last checked. The price next to the name above is per unit at the cheapest box size we track; a single-unit price below may run higher.

Spring Energy $4.60 Visit →

Who this is for

the numbers, applied

The field tells you what it is. This is who should act on it.

Worth the money if

You want a genuinely whole-food fuel and are prepared to pay for it.
You're fuelling at a lower carbohydrate rate and want fat-derived calories alongside it.

Look elsewhere if

You have a tree nut allergy.
You need to hold 90 g/hr of carbohydrate; the low carb-per-sachet and high price make this an expensive way to do it.