Sol Circles vs HalfCaff
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sol Circles
Connect with other women through guided storytelling experiences. Participate in hour-long video sessions to share personal stories, listen to meditations, and gain new perspectives. Build connections and find wisdom in a supportive community.
- Guided video storytelling sessions
- Meditation for story discovery
- Optional audio chat
- Connect with women globally
- Broaden perspectives
- Strengthen personal voice
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Sol connects and empowers women through Storytelling Circles. Storytelling Circles are hour long, guided, video experiences with up to 6 women. How It Works: - You introduce yourself - Listen to a meditation that helps you find a story of your past around a topic - Share your story (optional) and listen to others’ - Share key takeaways from the experience - End with an optional 15 minute casual audio chat Storytelling Circles Help You: - Feel more connected to yourself and the world around you - Broaden Your Perspectives - Find wisdom without anyone telling you what to do - Strengthen your voice - Let go of what no longer serves you and make room for what does - Make friends across continents! Privacy Policy: https://www.solmindfulness.com/privacy-policy Terms of Use: https://www.solmindfulness.com/terms-agreement
HalfCaff
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HalfCaff tracks your caffeine intake and shows exactly how much caffeine is in your body right now. Using scientifically-based half-life calculations, HalfCaff answers the one question every coffee lover asks: "Can I have another cup and still sleep tonight?" "○○mg remaining" — Based on your bedtime threshold and the FDA daily limit (400mg), see exactly how much more you can drink at a glance. Features: - Real-time body caffeine level with circular gauge - Remaining allowance display ("○○mg OK to drink") - 24-hour caffeine decay curve - 70+ drink presets (Starbucks, Doutor, Tully's official data) - Home screen widgets (Small & Medium) - Dynamic Island & Live Activities - Personalized half-life based on your caffeine sensitivity HalfCaff Pro unlocks: - Home screen widgets - Dynamic Island display - Unlimited history Includes a 3-day free trial. Terms: https://halfcaff.decoy284.net/terms/ Privacy Policy: https://halfcaff.decoy284.net/privacy/
Screenshots
Verdict
The clearest difference is update cadence: HalfCaff at every 6 days against Sol Circles's every 3 weeks. Sol Circles's advantage is iOS requirement (14.0 vs 17.0). On price, ads, in-app purchases and device support 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. Sol Circles sells 17 in-app purchases, starting at $7.00 per month and HalfCaff sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Sol Circles ships an update every 3 weeks, HalfCaff every 6 days. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.
| Parameter | Sol Circles | HalfCaff |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (655 ratings) — better | — |
| Positive reviews | 89.0% of reviews | — |
| Number of ratings | 655 — better | — |
| Update frequency | Every 3 weeks | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 272 MB | 4 MB |
| Age rating | 17+ | 4+ |
| Developer | Yoni Circle | Yutaro Koide |
Bugs and requests
Sol Circles
Reported bugs
2 issues- Inability to join scheduled circles
- Crashes and technical glitches
Requested features
4 requests- Allow non-binary and they/them pronouns
- More inclusive policies
- Improve technical stability and user experience
- Offer free or more affordable options
HalfCaff
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sol Circles
- Manifestor$7.001 Month
- Manifestor2 Months trial$7.001 Month
- Manifestor14 Days trial$7.001 Month
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- Manifestor1 Month trial$7.001 Month
- Manifestor$9.001 Month
- Manifestor - Financial Support14 Days trial$9.001 Month
- Manifestor - Financial Support1 Month trial$9.001 Month
- Member1 Month trial$15.001 Month
- Member14 Days trial$15.001 Month
- Member (monthly)2 Months trial$15.001 Month
- Member14 Days trial$17.001 Month
- Member1 Month trial$17.001 Month
- Member$17.001 Month
- Supporter14 Days trial$22.001 Month
- Supporter1 Month trial$22.001 Month
- Member Plus14 Days trial$24.001 Month
- Member Plus1 Month trial$24.001 Month
HalfCaff
- Weekly3 Days trial$1.997 Days
- Monthly3 Days trial$5.991 Month
- Yearly3 Days trial$22.991 Year
