HeartString vs Between Us
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HeartString
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HeartString is your personal guide to stronger relationships. Stay connected, learn how to have meaningful conversations, explore your feelings, and develop the skills to truly understand the people who matter most.
Between Us
Explore your attachment style and improve your relationships through private journaling and AI-powered insights. Discover patterns, engage in healing exercises, and connect anonymously or with a partner.
- Private encrypted journaling
- AI-powered attachment style reflection
- Personalized healing exercises
- Bridge Mode for partner sharing
- Anonymous shared thought space
- 30-day pattern insights
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Understand your attachment style. Heal your relationships. What if we grew up learning how to love a certain way that caused us to be attached to people, but due to our attachment style, we self-sabotaged the relationships we cherished the most? Your attachment style — anxious, avoidant, secure, or disorganized — shapes how you love, fight, cling, and pull away. Between Us: Attachment combines private journaling with AI-powered reflection to help you identify your patterns and, with time, change them. What's inside: Journal — private writing, encrypted in transit and at rest. Your words are never shared or used to train AI. AI Reflections — after each entry, understand the attachment style, emotional tone, recurring themes, and a self-awareness score. Insights — a 30-day view of how your attachment patterns are shifting. Growth is slow; now you can actually see it. Healing Exercises — short, targeted practices matched to where you are today. A five-minute self-soothing for anxious moments. A "stay a little longer" prompt for avoidant ones. Bridge Mode (opt-in) — share the emotional weather of your inner world with a partner - whether that's a family member, partner, friend, or anyone important to you, never the words themselves. Climate snapshots, a daily sync score, and full control to disconnect at any time. The Lake — cast a thought into a shared, anonymous space when it's too heavy to sit with alone. Tagged by attachment style. No names. No replies. Faith Lens - understand your analysis through your faith.* Why it's different: Most journaling apps give you a blank page. Most therapy apps hand you a workbook. Between Us sits between the two — pairing attachment theory with private journaling and AI-assisted reflection so you can work on the specific patterns that affect your closest relationships. Your privacy, fully protected Your entries are yours alone. They are never shared with a partner (even in Bridge Mode), never seen by the Between Us team, and never used to train AI models. Pricing: Free to start — includes 3 AI reflections, 1 Lake post, and 1 healing exercise per day. Between Us Pro ($12.99/month or $79.99/year) unlocks unlimited reflections and exercises, full Insights, Bridge Mode, and unlimited Lake posts. Cancel anytime through your Apple ID settings. Between Us: Attachment is a journaling companion for self-reflection. It is not a medical device and is not a substitute for professional therapy. If you are in crisis, please contact a licensed mental-health professional or your local crisis line. Terms of Use: https://betweenusattachment.com/terms/ * Faith lens is currently available for Christian and Islam. We look to add more faiths in the near future.
Screenshots
Verdict
The clearest difference is in-app purchases: HeartString at none against Between Us's 2. HeartString also leads on device support (3 vs 1) and iOS requirement (15.0 vs 26.0). On price, update cadence and ads 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
Both are free to download. Between Us sells 2 in-app purchases, starting at $12.99 per month. HeartString asks for nothing beyond the download.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 24, 2026 and September 26, 2026 respectively.
| Parameter | HeartString | Between Us |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 49 MB | 28 MB |
| Age rating | 4+ | 17+ |
| Developer | CrankApps, Inc. | SARJIL HASAN |
In-app purchases
HeartString
No in-app purchases
Between Us
- BetweenUs Monthly$12.991 Month
- BetweenUs Yearly$79.991 Year









