Numbers of asthma exacerbations will be recorded by self-report from parents/child at study visit 2 and 3. Within and between group comparisons between groups will be explored.

Measured by validated, self-report Asthma Control Test (ACT). Minimum score of 0 - maximum score of 25. Higher scores = well controlled asthma. Within and between group comparisons between groups will be explored at all study visits.

Measured by FENO which measures nitric oxide level in parts per billion (PPB) in the air you slowly exhale out of child's lungs to be completed by child at each study visit. For children, <20 ppb is low/normal and >35ppb is high. Within and between group comparisons between groups will be explored.

A self-report validated questionnaire to explore the child's perceptions of their asthma will be conducted at each study visit. Within and between group comparisons between groups will be explored. The B-IPQ has 8 items which are scored on a Likert scale 0-10 scoring system and an overall score is calculated. Minimum score is 0 and maximum score is 80. Overall score indicates degree in which illness is perceived threatening - higher scorer = more threatening view.

Measured by validated questionnaire the self-report behavioural automaticity index (SRBAI) to be conducted at each study visit. Within and between group comparisons between groups will be explored. The questionnaire has 4-questions which are rated on a Likert scale of strongly agree (1) - strongly disagree (5). An average of all 4 questions is calculated (minimum score 1, maximum score 5), 1 means no habit and 5 means strong habit.

Measured by the validated Medication Adherence Report Scale for Asthma (MARS-A) questionnaire. Within and between group comparisons will be explored. Comparisons against EMD record of adherence will be explored. Questionnaire has 10 items on a scale of 1 = always to 5 = never Likert scale. An average of all items is calculated, minimum score 1 and maximum score 5. A score of 4.5 and above indicates high adherence.

Change in % ICS adherence for control group between 12-weeks and 24-weeks. Average % ICS adherence measured by EMD. EMD will electronically record date/time of asthma inhaler actuation. Data from EMD will be downloaded at study visit/s. Possible scores: 0% (poor adherence) to 100% (good adherence).

Change in % ICS adherence for intervention group between 12-weeks and 24-weeks. Average % ICS adherence measured by EMD. EMD will electronically record date/time of asthma inhaler actuation. Data from EMD will be downloaded at study visit/s. Possible scores: 0% (poor adherence) to 100% (good adherence).

Average % ICS adherence measured by EMD. EMD will electronically record date/time of asthma inhaler actuation. Data from EMD will be downloaded at study visit/s. Possible scores: 0% (poor adherence) to 100% (good adherence).

Self-report measure of the number of asthma attacks from the start of the study (0-weeks) until end of study (24-weeks).

Calculation of incident rate ratio of asthma exacerbations based upon self-report number of asthma attacks at study visit 2 and study visit 3 and total number of attacks at 24-weeks.

Measured by an adaptation of the Treatment Self-Regulation Questionnaire (TSRQ) for the purpose of this study. Within and between group comparisons will be explored. There are 4 items for autonomous motivation. All items are scores on a scale of 0 (not at all true) and 7 (very true). A total score is calculated from all 4 questions, minimum score 4 and maximum score 28. A higher score = higher motivation in either domain. Addition of 2 questions for intervention group only on a similar scoring scale (0 = not at all true - 7 = very true) about the influence of incentives over motivation which will be reported descriptively.

Measured by an adaptation of the Treatment Self-Regulation Questionnaire (TSRQ) for the purpose of this study. Within and between group comparisons will be explored. There are 4 items for controlled motivation. All items are scores on a scale of 0 (not at all true) and 7 (very true). A total score is calculated from all 4 questions, minimum score 4 and maximum score 28. A higher score = higher motivation in either domain. Addition of 2 questions for intervention group only on a similar scoring scale (0 = not at all true - 7 = very true) about the influence of incentives over motivation which will be reported descriptively.

A self-report validated questionnaire to explore the child's belief in their asthma medicines will be conducted at each study visit. Within and between group comparisons between groups will be explored. The questionnaire is split into 1) BMQ specific (medicines prescribed to child) that has 10 items and 2) BMQ - general (medicines in general) that has 8 items - all with a likert scale response of strongly agree - strongly disagree. Questions can be grouped into: necessity, concern, harm and over-use. Total scores for Necessity: 5 = low belief in need for medicine; 25 = high belief in need for medicine

A self-report validated questionnaire to explore the child's belief in their asthma medicines will be conducted at each study visit. Within and between group comparisons between groups will be explored. The questionnaire is split into 1) BMQ specific (medicines prescribed to child) that has 10 items and 2) BMQ - general (medicines in general) that has 8 items - all with a likert scale response of strongly agree - strongly disagree. Questions can be grouped into: necessity, concern, harm and over-use. Total score for concern: 5 = low belief in concern of medicine; 25 = high belief in concern of medicine

A self-report validated questionnaire to explore the child's belief in their asthma medicines will be conducted at each study visit. Within and between group comparisons between groups will be explored. The questionnaire is split into 1) BMQ specific (medicines prescribed to child) that has 10 items and 2) BMQ - general (medicines in general) that has 8 items - all with a likert scale response of strongly agree - strongly disagree. Questions can be grouped into: necessity, concern, harm and over-use. Total harm score: 4 = low belief in harm of medicine; 20 = high belief in harm of medicine

A self-report validated questionnaire to explore the child's belief in their asthma medicines will be conducted at each study visit. Within and between group comparisons between groups will be explored. The questionnaire is split into 1) BMQ specific (medicines prescribed to child) that has 10 items and 2) BMQ - general (medicines in general) that has 8 items - all with a likert scale response of strongly agree - strongly disagree. Questions can be grouped into: necessity, concern, harm and over-use. Total over-use score: 4 = low belief in medicine over-use; 20 = high belief in medicine over-use

Total of all reporting groups

Asthma Control Test (ACT) is a questionnaire measuring asthma control over the past 4-weeks. It consists of 5 questions, each of which are scored using a 5 point Likert scale. A total score is calculated; the minimum possible score is 5 and maximum possible score is 25; a score of 19 and below indicates poor asthma control.

Medication Adherence Reporting Scale for Asthma (MARS-A) is a measure of maintenance treatment adherence. It consists of 10 questions, each question is scored using a Likert scale of 1-5. An average score from all questions is calculated. A minimum possible score is 1 and a maximum score is 5; a score of 4.5 and above indicates high levels of maintenance treatment adherence.

Brief Illness Perceptions Questionnaire (B-IPQ) is a measure of illness perceptions. It consists of 8 questions, each question is score on a scale of 0-10 and overall score is calculated. Minimum score is 0 and maximum score is 80. Those with a higher overall score perceive their illness as more threatening.

Self-Report Behavioural Automaticity Index (SRBAI) is a measure of habit. It consists of 4 questions, each question is scored using a Likert scale of 1-5. The average of all questions is calculated, minimum score of 1 and maximum score of 5 and higher scores indicate stronger habit.

Belief in Medicines Questionnaire (BMQ) is a questionnaire to measure beliefs about medicines. It consists of 18 questions, each question is scores using a Likert scale of 1-5. The BMQ is interpreted in 4 sub-sets. 'Necessity' is a sub-set which is calculated from total of questions 1-5 (minimum score 5, maximum score 25), a higher score indicates high levels of belief in the need for medicines.

Belief in Medicines Questionnaire (BMQ) is a questionnaire to measure beliefs about medicines. It consists of 18 questions, each question is scores using a Likert scale of 1-5. The BMQ is interpreted in 4 sub-sets. 'Concerns' is a sub-set which is calculated from total of questions 6-10 (minimum score 5, maximum score 25), a higher score indicates high levels of belief in concern of medicines.

Belief in Medicines Questionnaire (BMQ) is a questionnaire to measure beliefs about medicines. It consists of 18 questions, each question is scores using a Likert scale of 1-5. The BMQ is interpreted in 4 sub-sets. 'Harm' is a sub-set which is calculated from an average of questions 11-14 (minimum score 4, maximum score 20), a higher score indicates high levels of belief in the harm for medicines.

Belief in Medicines Questionnaire (BMQ) is a questionnaire to measure beliefs about medicines. It consists of 18 questions, each question is scores using a Likert scale of 1-5. The BMQ is interpreted in 4 sub-sets. 'Overuse' is a sub-set which is calculated from total of questions 15-18 (minimum score 4, maximum 20), a higher score indicates high levels of belief in the overuse of medicines.

Treatment Self-Regulation Questionnaire (TSRQ) was adapted for this study to measure autonomous and controlled motivation. It consists of 8 questions, each question is scored using a Likert scale of 1-7. Autonomous motivation is measured from 4 questions and controlled motivation is measured from the other 4 questions; a total score is calculated with a minimum of 4 and a maximum of 28. The motivation component with the highest total score (e.g., autonomous or controlled) reflects whether an individual is more motivated by external or internal sources.

Treatment Self-Regulation Questionnaire (TSRQ) was adapted for this study to measure autonomous and controlled motivation. It consists of 8 questions, each question is scored using a Likert scale of 1-7. Autonomous motivation is measured from 4 questions and controlled motivation is measured from the other 4 questions; a total score is calculated with a minimum of 4 and a maximum of 28. The motivation component with the highest total score (e.g., autonomous or controlled) reflects whether an individual is more motivated by external or internal sources.

The proportion of participants is defined as number of participants achieving an average % ICS adherence measured by EMD of 80% and above from each group (intervention or control)bat study visit 2 and study visit 3. Within and between group comparisons between groups will be explored.

Participant numbers decrease between baseline, 12-weeks and 24-weeks due to participant withdrawal

Numbers of asthma exacerbations will be recorded by self-report from parents/child at study visit 2 and 3. Within and between group comparisons between groups will be explored.

Number of participants decreased between 12- and 24-weeks due to participant withdrawal

Measured by validated, self-report Asthma Control Test (ACT). Minimum score of 0 - maximum score of 25. Higher scores = well controlled asthma. Within and between group comparisons between groups will be explored at all study visits.

Participant numbers decrease between baseline, 12-weeks and 24-weeks due to participant withdrawal

Measured by FENO which measures nitric oxide level in parts per billion (PPB) in the air you slowly exhale out of child's lungs to be completed by child at each study visit. For children, <20 ppb is low/normal and >35ppb is high. Within and between group comparisons between groups will be explored.

Participant numbers decrease between baseline, 12-weeks and 24-weeks due to participant withdrawal

A self-report validated questionnaire to explore the child's perceptions of their asthma will be conducted at each study visit. Within and between group comparisons between groups will be explored. The B-IPQ has 8 items which are scored on a Likert scale 0-10 scoring system and an overall score is calculated. Minimum score is 0 and maximum score is 80. Overall score indicates degree in which illness is perceived threatening - higher scorer = more threatening view.

Participant numbers decrease between baseline, 12-weeks and 24-weeks due to participant withdrawal

Measured by validated questionnaire the self-report behavioural automaticity index (SRBAI) to be conducted at each study visit. Within and between group comparisons between groups will be explored. The questionnaire has 4-questions which are rated on a Likert scale of strongly agree (1) - strongly disagree (5). An average of all 4 questions is calculated (minimum score 1, maximum score 5), 1 means no habit and 5 means strong habit.

Participant numbers decrease between baseline, 12-weeks and 24-weeks due to participant withdrawal

Measured by the validated Medication Adherence Report Scale for Asthma (MARS-A) questionnaire. Within and between group comparisons will be explored. Comparisons against EMD record of adherence will be explored. Questionnaire has 10 items on a scale of 1 = always to 5 = never Likert scale. An average of all items is calculated, minimum score 1 and maximum score 5. A score of 4.5 and above indicates high adherence.

Participant numbers decrease between baseline, 12-weeks and 24-weeks due to participant withdrawal

Change in % ICS adherence for control group between 12-weeks and 24-weeks. Average % ICS adherence measured by EMD. EMD will electronically record date/time of asthma inhaler actuation. Data from EMD will be downloaded at study visit/s. Possible scores: 0% (poor adherence) to 100% (good adherence).

Change in % ICS adherence for intervention group between 12-weeks and 24-weeks. Average % ICS adherence measured by EMD. EMD will electronically record date/time of asthma inhaler actuation. Data from EMD will be downloaded at study visit/s. Possible scores: 0% (poor adherence) to 100% (good adherence).

Average % ICS adherence measured by EMD. EMD will electronically record date/time of asthma inhaler actuation. Data from EMD will be downloaded at study visit/s. Possible scores: 0% (poor adherence) to 100% (good adherence).

Self-report measure of the number of asthma attacks from the start of the study (0-weeks) until end of study (24-weeks).

Calculation of incident rate ratio of asthma exacerbations based upon self-report number of asthma attacks at study visit 2 and study visit 3 and total number of attacks at 24-weeks.

Self-reported number of asthma attacks collected was too low to calculate the incident rate ratio of asthma exacerbations.

Measured by an adaptation of the Treatment Self-Regulation Questionnaire (TSRQ) for the purpose of this study. Within and between group comparisons will be explored. There are 4 items for autonomous motivation. All items are scores on a scale of 0 (not at all true) and 7 (very true). A total score is calculated from all 4 questions, minimum score 4 and maximum score 28. A higher score = higher motivation in either domain. Addition of 2 questions for intervention group only on a similar scoring scale (0 = not at all true - 7 = very true) about the influence of incentives over motivation which will be reported descriptively.

Participant numbers decrease between baseline, 12-weeks and 24-weeks due to participant withdrawal

Measured by an adaptation of the Treatment Self-Regulation Questionnaire (TSRQ) for the purpose of this study. Within and between group comparisons will be explored. There are 4 items for controlled motivation. All items are scores on a scale of 0 (not at all true) and 7 (very true). A total score is calculated from all 4 questions, minimum score 4 and maximum score 28. A higher score = higher motivation in either domain. Addition of 2 questions for intervention group only on a similar scoring scale (0 = not at all true - 7 = very true) about the influence of incentives over motivation which will be reported descriptively.

Participant numbers decrease between baseline, 12-weeks and 24-weeks due to participant withdrawal

A self-report validated questionnaire to explore the child's belief in their asthma medicines will be conducted at each study visit. Within and between group comparisons between groups will be explored. The questionnaire is split into 1) BMQ specific (medicines prescribed to child) that has 10 items and 2) BMQ - general (medicines in general) that has 8 items - all with a likert scale response of strongly agree - strongly disagree. Questions can be grouped into: necessity, concern, harm and over-use. Total scores for Necessity: 5 = low belief in need for medicine; 25 = high belief in need for medicine

Participant numbers decrease between baseline, 12-weeks and 24-weeks due to participant withdrawal

A self-report validated questionnaire to explore the child's belief in their asthma medicines will be conducted at each study visit. Within and between group comparisons between groups will be explored. The questionnaire is split into 1) BMQ specific (medicines prescribed to child) that has 10 items and 2) BMQ - general (medicines in general) that has 8 items - all with a likert scale response of strongly agree - strongly disagree. Questions can be grouped into: necessity, concern, harm and over-use. Total score for concern: 5 = low belief in concern of medicine; 25 = high belief in concern of medicine

Participant numbers decrease between baseline, 12-weeks and 24-weeks due to participant withdrawal

A self-report validated questionnaire to explore the child's belief in their asthma medicines will be conducted at each study visit. Within and between group comparisons between groups will be explored. The questionnaire is split into 1) BMQ specific (medicines prescribed to child) that has 10 items and 2) BMQ - general (medicines in general) that has 8 items - all with a likert scale response of strongly agree - strongly disagree. Questions can be grouped into: necessity, concern, harm and over-use. Total harm score: 4 = low belief in harm of medicine; 20 = high belief in harm of medicine

Participant numbers decrease between baseline, 12-weeks and 24-weeks due to participant withdrawal

A self-report validated questionnaire to explore the child's belief in their asthma medicines will be conducted at each study visit. Within and between group comparisons between groups will be explored. The questionnaire is split into 1) BMQ specific (medicines prescribed to child) that has 10 items and 2) BMQ - general (medicines in general) that has 8 items - all with a likert scale response of strongly agree - strongly disagree. Questions can be grouped into: necessity, concern, harm and over-use. Total over-use score: 4 = low belief in medicine over-use; 20 = high belief in medicine over-use

Participant numbers decrease between baseline, 12-weeks and 24-weeks due to participant withdrawal

Financial incentive dependent upon daily medication adherence (plus EMD with reminders) for 12-weeks.

Financial incentives: Financial incentives dependent upon adherence will be given to participants alongside additional EMD associated app features for 12-weeks.