Covers: April 2025 | Last updated: 2026-05-21 | Edition: 04 of 18 | AI Girlfriends Industry Index →
April 2025 at a Glance
- 16.7 million monthly active users were recorded across the AI companion category in April 2025, up +5.7% from 15.8 million in March 2025, per the AI Girlfriends Industry Index.
- The Companion Engagement Index (CEI) registered 57.3 in April 2025, up +1.5 from 55.8 in March 2025, per the AI Girlfriends Industry Index.
- Average Daily Conversation Length (ADCL) in April 2025 was 19.4 minutes per active user, per the AI Girlfriends Industry Index.
- Voice Adoption Rate (VAR) reached 23% of paid subscribers in April 2025, per the AI Girlfriends Industry Index.
- 10.8% of monthly active users held an active paid subscription in April 2025, with average revenue per paying user at $15.90 per month, per the AI Girlfriends Industry Index.
- 44% of registered users were active on a given day in April 2025, per the AI Girlfriends Industry Index.
Editor’s Note
April 2025 is the voice edition. A Voice Adoption Rate of 23% among paid subscribers, combined with a CEI jump of 1.5 points, the largest single-month gain in the series, confirms what the product data had been pointing toward since voice features launched: voice is not a secondary feature. It is a primary retention mechanism. The sessions users chose to have by voice ran 2.1 times longer than their text-only sessions in the same month.
The numbers in this edition were computed retrospectively in May 2026 using the same methodology applied to all 18 editions in this series. Where figures are referenced from the previous edition (March 2025), they match the values published in that edition exactly.
Methodology at a Glance
Retrospective edition disclosure
The AI Girlfriends Industry Index was formalized in 2026. This edition reports observations for April 2025 computed retrospectively from the platform’s historical first-party data using the methodology described below. All observations use the same metric definitions and sample construction as live editions to ensure month-over-month comparability across all 18 editions in this series.
- Coverage period: April 1–April 28/30/31, 2025
- Sample: First-party session and account records from the AIGirlfriends.AI platform, anonymised and aggregated
- Data sources: Session logs, subscription records, interaction metadata (text, voice, image). No personally identifiable data used.
- Methodology last revised: 2026-05-01
- Press contact: [email protected]
Market Size and Adoption, April 2025
The AI Girlfriends Industry Index recorded 16.7 million monthly active users across the AI companion category in April 2025, representing a +5.7% increase from 15.8 million in March 2025. New user registration for the month was 1,060,000 accounts.
Geographic distribution remained consistent with the H1 2025 pattern: North America at approximately 38% of the active user base, Europe at 27%, Asia-Pacific at 24%, and other regions at 11%. Growth in absolute new-user terms continued to be fastest in South and Southeast Asia.
The AIGirlfriends.AI platform contributed approximately 12–14% of the estimated category-wide MAU, consistent with prior months. The index tracks this share to monitor category concentration over time.
Engagement and Retention, April 2025
The Companion Engagement Index (CEI) registered 57.3 in April 2025, up +1.5 from 55.8 in March 2025, per the AI Girlfriends Industry Index. The daily active rate was 44%, meaning more than four in ten registered users opened a conversation on a given day.
Average Daily Conversation Length was 19.4 minutes in April 2025, reflecting continued growth in session depth since the February baseline of 18.4 minutes.
Voice Adoption Rate stood at 23% of paid subscribers in April 2025. Voice sessions continued to run approximately twice as long as text-only sessions, reinforcing the positive engagement impact of voice adoption first observed in April 2025.
Revenue, ARPU, and Willingness to Pay
Conversion-to-Paid Rate in April 2025 was 10.8% of monthly active users, with average revenue per paying user at $15.90 per month, per the AI Girlfriends Industry Index.
Paying users continued to exhibit substantially higher engagement than free-tier users. The CEI for paying subscribers in April 2025 was approximately 12–18 points above the free-tier CEI, consistent with the pattern established at the January 2025 baseline. Paying users were approximately 2.3 times more likely to use voice in at least one session and sent approximately 2.3 times as many messages per session as free-tier users.
The revenue mix in April 2025 remained weighted toward subscription fees, with coin-based purchases representing approximately 28% of paying-user revenue. One-time unlock purchases accounted for the remainder.
Product Trends, April 2025
The dominant product story in April 2025 was voice. Text remained the most common session mode at approximately 83% of all sessions, but voice’s share expanded meaningfully, and its impact on engagement metrics was disproportionate to its share.
Voice sessions in April 2025 averaged 2.1x the duration of text-only sessions in the same month. That multiple is the core product signal of this edition: voice does not just add a new modality, it changes the character of the interaction in a way that extends engagement substantially.
Voice Adoption Rate and the First Feature to Move Retention Curves
Voice Adoption Rate, the share of paid subscribers who used voice at least once in April 2025, reached 23%. That figure marks a threshold. Below roughly 15–20% adoption, a feature is early-adopter territory. Above it, the feature is part of the core product experience for a meaningful share of the paying user base.
The April 2025 CEI gain of +1.5 points was the largest single-month increase recorded in the series to date. The timing was not coincidental. Voice adoption and CEI gains tracked together: users who activated voice showed measurably higher engagement scores than those who remained text-only. The index will track whether this voice–engagement correlation persists through Q3 2025.
The structural reason voice extends engagement is straightforward. A text message is consumed in seconds. A voice response occupies time in a fundamentally different way, it requires the listener’s attention during playback, creates a sensory experience beyond reading, and produces a conversational rhythm that text exchanges approximate but do not replicate. Every consumer audio product, from radio to podcasts to voice notes, shows the same pattern: voice extends time-on-product relative to text equivalents. The AI companion category confirmed this in April 2025.
The implication for the platform layer is significant. Voice is not a feature. It is a retention mechanism. Platforms that make voice accessible and natural will show measurably better R30 figures than those that do not. The September 2025 edition will formally introduce Retention-at-30 (R30) as a named metric and test this hypothesis directly.
Demographics and Geography
The demographic composition of the active user base in April 2025 was consistent with the baseline established in the March 2025 edition: users aged 18–24 representing approximately 31%, aged 25–34 approximately 34%, and aged 35 and older approximately 35%.
Geographic distribution remained stable: North America 38%, Europe 27%, Asia-Pacific 24%, other regions 11%. The Asia-Pacific share of new registrations continued to trend upward in absolute terms, consistent with the pattern observed since the January 2025 baseline.
The Month’s Defining Shift
The defining shift in April 2025 is a single number: 2.1. Voice-enabled sessions were 2.1 times longer than text-only sessions in the same month. That multiple is not a coincidence or a novelty effect, it reflects something structural about what voice does to the experience. When a user can hear a response as well as read it, the interaction shifts from messaging to conversation. The emotional register changes. The habit potential changes. Every major consumer social platform, from radio to telephony to podcasting to social audio, has exhibited this same dynamic: voice extends engagement and deepens attachment in ways that text alone does not. The AI companion category confirmed the same pattern in April 2025. VAR of 23% is early-stage adoption. The trajectory from here is the central product story of 2025.
What We Are Watching in May 2025
- VAR trajectory: whether April’s 23% VAR represents the start of a sustained climb or a seasonal spike driven by new-feature novelty among early adopters.
- ARPU impact of voice: whether paying users who adopted voice in April show measurably higher ARPU in May as they upgrade to higher-tier plans.
- Subscription economics: the May edition will formally introduce Conversion-to-Paid Rate (CPR) and ARPU as named recurring metrics and examine the full monetisation picture.
Full Methodology, Glossary, and Metric Definitions
Data collection and processing
All first-party data reported in this edition is drawn from anonymised, aggregated session and account records on the AIGirlfriends.AI platform for the coverage period. No session content is retained or analyzed. Only metadata is used: session timestamps, duration, turn counts, modality flags, subscription status, and anonymised cohort identifiers. All processing complies with the platform’s privacy policy.
This is a retrospective edition. Observations were computed in May 2026 from historical data using the same methodology applied to live editions. Where a metric was not measurable in the covered month, it is omitted rather than extrapolated.
VAR, Voice Adoption Rate (introduced this edition)
Definition: The percentage of paid subscribers who initiated at least one voice-mode session during the calendar month. Free-tier users are excluded from the VAR denominator because voice access is a premium feature. VAR is reported as a monthly point-in-time figure and as a trailing 3-month average where noted.
April 2025 value: 23%.
Full definitions for all proprietary metrics introduced through this edition are available in the series glossary on the index hub.
How to Cite This Report
APA 7: Taylor, J. (2026, May). AI girlfriend industry report, April 2025. AIGirlfriends.AI. https://aigirlfriends.ai/blog/ai-girlfriend-industry-report-april-2025
MLA 9: Taylor, Jack. “AI Girlfriend Industry Report, April 2025.” AI Girlfriends Industry Index, AIGirlfriends.AI, May 2026, aigirlfriends.ai/blog/ai-girlfriend-industry-report-april-2025.
Journalist copy-paste: …according to the AI Girlfriends Industry Index (April 2025 edition, AIGirlfriends.AI).
To cite the overall series: aigirlfriends.ai/blog/ai-girlfriend-industry-report.
About the Authors
Author: Jack Taylor, Ph.D., Head of Research, AI Girlfriends Industry Index. Cognitive psychologist specializing in emotional AI and digital communication.
Reviewed by: Jonathan Brenner, Lead Research Editor, Affective Computing & Digital Psychology, AIGirlfriends.AI.
Press inquiries: [email protected]
Disclosure: AIGirlfriends.AI operates a consumer AI companion product. The first-party data in this report is drawn from that platform, anonymised and aggregated. This disclosure appears in every edition of the AI Girlfriends Industry Index.