CHILD SEXUAL ABUSE

IS PREVENTABLE

CHILD SEXUAL ABUSE

IS PREVENTABLE

THE CHALLENGE

1 in 5 girls and 1 in 7 boys

experience sexual violence during childhood, globally

In Tanzania, around 1 in 12 girls and 1 in 30 boys experience sexual violence before the age of 18.

Parents can protect their children when they get the right support. But in-person parenting programmes are expensive and reach only a fraction of those who need them. ParentApp was built to close that gap.

THE CHALLENGE

1 in 5 girls and 1 in 7 boys

experience sexual violence during childhood, globally

In Tanzania, around 1 in 12 girls and 1 in 30 boys experience sexual violence before the age of 18.

Parents can protect their children when they get the right support. But in-person parenting programmes are expensive and reach only a fraction of those who need them. ParentApp was built to close that gap.

ABOUT PARENTAPP

Proven parenting support at scale

ParentApp, our flagship digital intervention is a low-cost, blended digital parenting programme for caregivers. ParentApp for Teens supports parents of adolescents aged 10 to 17 and was co-developed with parents and teens across Africa.

It draws on insights from pioneering sexual violence prevention initiatives, including No Means No Worldwide and the Brave Movement, and brings them into a parenting framework.

17
Free and open-source

Governments and partners can adapt, own and sustain it for their populations.

Offline-first

Works where data is costly and connections are unreliable — built for real-world conditions.

Built for systems

Designed to be embedded in public health and social protection services at national scale.

ABOUT PARENTAPP

Proven parenting support at scale

ParentApp is a low-cost, blended digital parenting programme for caregivers. ParentApp for Teens supports parents of adolescents aged 10 to 17 and was co-developed with parents and teens across Africa.

It draws on insights from pioneering sexual violence prevention initiatives, including No Means No Worldwide and the Brave Movement, and brings them into a parenting framework.

17
Free and open-source

Governments and partners can adapt, own and sustain it for their populations.

Offline-first

Works where data is costly and connections are unreliable — built for real-world conditions.

Built for systems

Designed to be embedded in public health and social protection services at national scale.

HOW IT WORKS

Technology with a human touch

Meet

Families start with an introductory in-person group session led by a local community facilitator.

Learn

Caregivers work through 12 modules on an offline-first mobile app, building skills to strengthen relationships and keep teens safe.

Connect

WhatsApp support groups, run by local community facilitators, keep families motivated and connected throughout.

HOW IT WORKS

Technology with a human touch

Meet

Families start with an introductory in-person group session led by a local community facilitator.

Learn

Caregivers work through 12 modules on an offline-first mobile app, building skills to strengthen relationships and keep teens safe.

Connect

WhatsApp support groups, run by local community facilitators, keep families motivated and connected throughout.

website graphics 1080x1080 (8)
Before the project, my mother was very harsh and would dismiss us without listening. Now she listens and responds politely, even when upset. I feel free to express myself and share private matters with her.
Adolescent Girl, Tanzania
website graphics 1080x1080 (8)
Before the project, my mother was very harsh and would dismiss us without listening. Now she listens and responds politely, even when upset. I feel free to express myself and share private matters with her.
Adolescent Girl, Tanzania
THE TRIAL

What the trial found

Fourteen months after the programme, girls in communities receiving ParentApp reported 67% less sexual violence than girls in comparison communities. Families also reported less physical and emotional maltreatment and better wellbeing across the board.

Design
Cluster-randomised controlled trial, with investigators and statisticians masked to allocation.

Setting
80 urban and rural sub-wards in Mwanza, Tanzania.

Participants
2,396 adolescents aged 10 to 17 (average age 13) and 2,396 caregivers.

Comparison
Active control: WASHApp, a water, sanitation and hygiene programme.

Follow up
14 months

For girls

  • 67% reduction in past-year sexual violence victimisation
  • 54% reduction in past-month sexual exploitation
  • 51% increase in past-month positive parent-child relationships

For boys and girls

  • Both reported less exposure to situations that put them at risk of sexual violence
  • The trial did not find a statistically significant reduction in sexual violence or exploitation among boys

For families

  • Less physical and emotional child maltreatment
  • Better parenting practices, family communication and conflict resolution
  • Improved caregiver and child mental health
  • Stronger financial coping and social support
  • Lower intimate partner violence victimisation among female caregivers

Led by
University of Oxford, University of Cape Town, Tanzania’s National Institute for Medical Research, and Parenting for Lifelong Health.

Partners
The trial was delivered with Tanzania’s Ministry of Community Development, Gender, Women and Special Groups, UNICEF and WHO country offices in Tanzania and South Africa, and Vodacom Tanzania, which co-sponsored devices and connectivity. Local community facilitators supported the WhatsApp groups.

Funders
The study was funded by UK Research and Innovation Global Challenges Research Fund, Oak Foundation, LEGO Foundation, the European Research Council and an anonymous family foundation. ParentApp development was also supported by an anonymous funder, World Childhood Foundation, Nuffield College, the Agency Fund, UNICEF and The Human Safety Net Foundation.

The Lancet
A blended digital parenting intervention for the prevention of sexual violence, exploitative sex and maltreatment of adolescent children at scale in Tanzania: a cluster-randomised, controlled trial.

Social Science & Medicine
Cost-effectiveness of a digital parenting intervention for reducing violence and related health burden among adolescents in Tanzania.

0 %

reduction in sexual violence against girls

0 %

reduction in sexual exploitation of girls

0 %

increase in positive parent-child relationships

~$ 0

per family at scale, vs $120 in person

~$ 0

in health savings per $1 invested

THE TRIAL

What the trial found

Fourteen months after the programme, girls in communities receiving ParentApp reported 67% less sexual violence than girls in comparison communities. Families also reported less physical and emotional maltreatment and better wellbeing across the board.

Design
Cluster-randomised controlled trial, with investigators and statisticians masked to allocation.

Setting
80 urban and rural sub-wards in Mwanza, Tanzania.

Participants
2,396 adolescents aged 10 to 17 (average age 13) and 2,396 caregivers.

Comparison
Active control: WASHApp, a water, sanitation and hygiene programme.

Follow up
14 months

For girls

  • 67% reduction in past-year sexual violence victimisation
  • 54% reduction in past-month sexual exploitation
  • 51% increase in past-month positive parent-child relationships

For boys and girls

  • Both reported less exposure to situations that put them at risk of sexual violence
  • The trial did not find a statistically significant reduction in sexual violence or exploitation among boys

For families

  • Less physical and emotional child maltreatment
  • Better parenting practices, family communication and conflict resolution
  • Improved caregiver and child mental health
  • Stronger financial coping and social support
  • Lower intimate partner violence victimisation among female caregivers

Led by
University of Oxford, University of Cape Town, Tanzania’s National Institute for Medical Research, and Parenting for Lifelong Health.

Partners
The trial was delivered with Tanzania’s Ministry of Community Development, Gender, Women and Special Groups, UNICEF and WHO country offices in Tanzania and South Africa, and Vodacom Tanzania, which co-sponsored devices and connectivity. Local community facilitators supported the WhatsApp groups.

Funders
The study was funded by UK Research and Innovation Global Challenges Research Fund, Oak Foundation, LEGO Foundation, the European Research Council and an anonymous family foundation. ParentApp development was also supported by an anonymous funder, World Childhood Foundation, Nuffield College, the Agency Fund, UNICEF and The Human Safety Net Foundation.

The Lancet
A blended digital parenting intervention for the prevention of sexual violence, exploitative sex and maltreatment of adolescent children at scale in Tanzania: a cluster-randomised, controlled trial.

Social Science & Medicine
Cost-effectiveness of a digital parenting intervention for reducing violence and related health burden among adolescents in Tanzania.

0 %

reduction in sexual violence against girls

0 %

reduction in sexual exploitation of girls

0 %

increase in positive parent-child relationships

~$ 0

per family at scale vs $120 for in-person intervention

~$ 0

in health savings per $1 invested

THE TRIAL

What the trial found

Fourteen months after the programme, girls in communities receiving ParentApp reported 67% less sexual violence than girls in comparison communities. Families also reported less physical and emotional maltreatment and better wellbeing across the board.

Design
Cluster-randomised controlled trial, with investigators and statisticians masked to allocation.

Setting
80 urban and rural sub-wards in Mwanza, Tanzania.

Participants
2,396 adolescents aged 10 to 17 (average age 13) and 2,396 caregivers.

Comparison
Active control: WASHApp, a water, sanitation and hygiene programme.

Follow up
14 months

For girls

  • 67% reduction in past-year sexual violence victimisation
  • 54% reduction in past-month sexual exploitation
  • 51% increase in past-month positive parent-child relationships

For boys and girls

  • Both reported less exposure to situations that put them at risk of sexual violence
  • The trial did not find a statistically significant reduction in sexual violence or exploitation among boys

For families

  • Less physical and emotional child maltreatment
  • Better parenting practices, family communication and conflict resolution
  • Improved caregiver and child mental health
  • Stronger financial coping and social support
  • Lower intimate partner violence victimisation among female caregivers

Led by
University of Oxford, University of Cape Town, Tanzania’s National Institute for Medical Research, and Parenting for Lifelong Health.

Partners
The trial was delivered with Tanzania’s Ministry of Community Development, Gender, Women and Special Groups, UNICEF and WHO country offices in Tanzania and South Africa, and Vodacom Tanzania, which co-sponsored devices and connectivity. Local community facilitators supported the WhatsApp groups.

Funders
The study was funded by UK Research and Innovation Global Challenges Research Fund, Oak Foundation, LEGO Foundation, the European Research Council and an anonymous family foundation. ParentApp development was also supported by an anonymous funder, World Childhood Foundation, Nuffield College, the Agency Fund, UNICEF and The Human Safety Net Foundation.

The Lancet
A blended digital parenting intervention for the prevention of sexual violence, exploitative sex and maltreatment of adolescent children at scale in Tanzania: a cluster-randomised, controlled trial.

Social Science & Medicine
Cost-effectiveness of a digital parenting intervention for reducing violence and related health burden among adolescents in Tanzania.

0 %

reduction in sexual violence against girls

0 %

reduction in sexual exploitation of girls

0 %

increase in positive parent-child relationships

~$ 0

per family at scale vs $120 for in-person intervention

~$ 0

in health savings per $1 invested

website graphics 1080x1080 (8)
Child sexual abuse is preventable. When parents receive structured, evidence-based support, family relationships strengthen, mental health improves, and children grow up in safe, nurturing environments.
Dr Jamie Lachman, CEO, Parenting for Lifelong Health
website graphics 1080x1080 (8)
Child sexual abuse is preventable. When parents receive structured, evidence-based support, family relationships strengthen, mental health improves, and children grow up in safe, nurturing environments.
Dr Jamie Lachman, CEO, Parenting for Lifelong Health
FROM EVIDENCE TO SCALE

What this means and where next

Governments in South Africa, Tanzania, Malaysia, and Mexico are exploring how to take ParentApp to scale with support from Parenting for Lifelong Health. As ministers from over 100 governments meet in the Philippines for the Second Global Ministerial Conference on Ending Violence Against Children, these results offer a proven, affordable option.

Governments

Embed ParentApp in national health, education and social protection systems.

Funders

Help take a proven, low-cost intervention to population scale.

Partners

Adapt and deliver ParentApp: it is free and open-source.

Researchers

Build on the evidence and test ParentApp in new settings.

FROM EVIDENCE TO SCALE

What this means and where next

Governments in South Africa, Tanzania, Malaysia, and Mexico are exploring how to take ParentApp to scale with support from Parenting for Lifelong Health. As ministers from over 100 governments meet in the Philippines for the Second Global Ministerial Conference on Ending Violence Against Children, these results offer a proven, affordable option.

Governments

Embed ParentApp in national health, education and social protection systems.

Funders

Help take a proven, low-cost intervention to population scale.

Partners

Adapt and deliver ParentApp: it is free and open-source.

Researchers

Build on the evidence and test ParentApp in new settings.

With thanks to this trail's funders
With thanks to this trial's funders
ParentApp cut sexual violence against girls by 67% in Tanzania

In a cluster-randomised controlled trial of 2,396 families in Mwanza, Tanzania, ParentApp for Teens delivered transformative outcomes for adolescent girls — at around US$6 per family.