Comparison

KOKU Lite (Keep On Keep Up) vs PKU Bite

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

KOKU Lite (Keep On Keep Up)

This app offers NHS-approved exercises and games designed to enhance strength, balance, and overall healthy aging for older adults. It personalizes routines based on user ability and confidence, aiming to improve mobility, bone health, and reduce fall risks.

Highlights
  • Tailored exercises for strength and balance
  • Evidence-based games for healthy aging
  • Personalized routines based on ability
  • Progress tracking
  • Fall risk reduction
  • Improved mobility and bone health
Features
Read full description

Keep on Keep up is a simple, NHS-approved app that helps older adults improve strength, balance and optimise healthy ageing. Based on scientific research from clinical trials, Keep on Keep up provides tailored exercises and evidence based games which can be easily completed independently at home, by older adults. These simple exercises improve mobility and bone health which in turn, reduces the likelihood of falls. Keep on Keep up also improves health literacy increasing awareness of how to stay safe in the home. How does the app work? Once you have downloaded Keep on Keep up, you will follow two simple steps: A fun onboarding and app walkthrough helps you understand how to use the app Ability and confidence levels are selected to personalise the app to your needs Once you have completed these steps you can begin some simple balance and strengthening exercises. Three daily exercises will be demonstrated for you, including a set of clear instructions from the app’s friendly guide, Wilf, plus all the safety advice you would need. Overtime, daily exercises will become more challenging and you will enjoy the sense of satisfaction as you track your progress within the app. Research behind the app Research to date includes multiple phases of testing and development with older adults and healthcare professionals. The strength and balance exercises are based on the evidence-based OTAGO/FaME exercise programmes specifically developed to improve function and prevent falls. You can feel assured that Keep on Keep up is safe to use as NHS Digital has assessed the platform and certified it as DCB0160 and DCB0129 compliant and of low risk to users. If you have feedback, questions or concerns about the Keep on Keep up app, please get in touch by sending an email to info@kokuhealth.com

About

PKU Bite

This app helps individuals with phenylketonuria (PKU) manage their low-phenylalanine diet. It provides information on over 1100 foods, categorizing them by protein content and offering recipes and preparation tips. An integrated calculator assists in tracking daily protein intake.

Highlights
  • Food database with over 1100 items
  • Low-protein, high-protein, and exchangeable food categorization
  • Traffic light color-coding system
  • Food preparation and recipe suggestions
  • In-built protein exchange calculator
  • Search by food name or category
Features
Read full description

PKU Bite is an app for people with phenylketonuria (PKU) or their families or carers. A low phenylalanine diet is the main treatment for PKU. Phenylalanine is found in protein, so protein containing foods need to be restricted. It cannot be removed from the diet completely as it is needed for growth and repair in the body. In PKU protein is given in measured amounts each day, known as exchanges. Knowing which foods contain protein and in what quantity is difficult to remember. Reading and interpreting food labels on manufactured foods can be particularly confusing. PKU Bite contains information on over 1100 foods. It describes which foods are low in protein and so can be eaten without measuring (‘exchange free foods’), foods which are high in protein so best avoided, and foods which need to be calculated as part of the daily protein/phenylalanine exchange allowance. Foods are colour coded using the traffic light system used by the patient support group, NSPKU. Each food has information on: what the food is, food preparation, storage, availability, menu ideas and recipes. Foods can be searched for by name or by food category. An inbuilt calculator enables the user to enter protein values from food labels and it will calculate the number of protein exchanges per 100g or per portion of the food. ***Disclaimer*** This application does not replace individual dietary advice, please consult your doctor or healthcare professional if you need diet or treatment information. This application is based on guidelines within the United Kingdom, other countries and territories may have different guidelines, please check with your doctor or healthcare professional before use.

Screenshots

PKU Bite4 screens

Verdict

The call

The clearest difference is review sentiment: KOKU Lite (Keep On Keep Up) at 100% against PKU Bite's 0%. KOKU Lite (Keep On Keep Up) also leads on iOS requirement (12.0 vs 15.1). PKU Bite's advantage is update cadence (every 4 weeks vs every 2 months) and device support (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

KOKU Lite (Keep On Keep Up) ships an update every 2 months, PKU Bite every 4 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
KOKU Lite (Keep On Keep Up) versus PKU Bite: the parameters behind the verdict, then further details
ParameterKOKU Lite (Keep On Keep Up)PKU Bite
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.0 — better15.1
Further details — not scored
Size262 MB54 MB
Age rating12+4+
DeveloperReason DigitalImobisoft Ltd

Customer experience

KOKU Lite (Keep On Keep Up)

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

PKU Bite

Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

KOKU Lite (Keep On Keep Up)

No in-app purchases

None

PKU Bite

No in-app purchases

Questions

Is KOKU Lite (Keep On Keep Up) free?
KOKU Lite (Keep On Keep Up) is free to download, with no in-app purchases.
Is PKU Bite free?
PKU Bite is free to download, with no in-app purchases.
Do KOKU Lite (Keep On Keep Up) or PKU Bite have ads?
Neither KOKU Lite (Keep On Keep Up) nor PKU Bite shows ads.
Which is updated more often, KOKU Lite (Keep On Keep Up) or PKU Bite?
KOKU Lite (Keep On Keep Up) ships an update every 2 months, and PKU Bite every 4 weeks. Most recently, KOKU Lite (Keep On Keep Up) was updated on November 2, 2026 and PKU Bite on November 3, 2026.

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