HearBeats vs SightFrame
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HearBeats
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Listen to your own heart beat. HearBeats streams your live heart rate from Apple Watch to your iPhone, which plays a synthesized stethoscope "lub-dub" in real time, at exactly your current rate. No account, no data collection — your heart rate goes straight from your Watch to your phone and nowhere else. • Live mode: pairs with Apple Watch for real-time heart rate sonification • Demo mode: hear how it works without a Watch • Mix with your music or listen on its own, with adjustable heartbeat volume • Nothing is saved to Health or anywhere else — the workout session used to read your heart rate is discarded • Feel your heartbeat: haptic taps on iPhone and Apple Watch, in time with every beat
SightFrame
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SightFrame is an interactive vision simulator and eye-care educational tool. Using advanced real-time image processing, SightFrame allows you to see the world through the perspective of individuals with myopia, astigmatism, presbyopia, and color vision deficiencies. KEY FEATURES: 1. Real-Time Camera Simulation • Live Diopter Control: Adjust spherical power from 0 to -8.0D to observe realistic distance defocus. • Astigmatism Effects: Directional blur, streaks, and double-vision glare—especially in low-light environments. • Presbyopia Mode: Central focus difficulty simulating age-related near vision loss. • Color Deficiency Filters: Protanopia, Deuteranopia, and Tritanopia color matrix transformations. 2. Realistic Preset Scenes • Explore common everyday environments like night driving, classroom blackboards, metro signs, and rainy streetscapes. • Switch effortlessly between clear vision and simulated refractive errors. 3. Split-Screen Comparison & Fine Tuning • Compare side-by-side (Split View) between normal vision and simulated filters. • Fine-tune blur radius, halo intensity, pupil distance, and astigmatism axis angles. 4. Vision Self-Checks • Explore Visual Clarity, Astigmatism Dial, Red-Green Balance, and Amsler Grid checks. • Save results for personal reference and review changes over time. • Self-checks are informational only and do not provide diagnosis or prescription. 5. Visual Breaks & Tracking • Practice Gabor visual discrimination, guided 20-20-20 screen breaks, and gentle figure-8 visual tracking. • Track completed sessions, streaks, and personal best scores. • Stop immediately if you experience eye strain or discomfort. 6. Family Vision Profiles • Create separate profiles for family members and organize prescription details and self-check history. • Review visual-acuity trends and previous records in one place. • Protect local health records with optional Face ID, Touch ID, or device passcode. 7. Privacy & Clean Experience • 100% On-Device Processing: Camera feed is rendered locally in real time. We NEVER record, save, or upload your photos or videos. • No Ads: Enjoy an uninterrupted, seamless visual journey. DISCLAIMER: SightFrame is intended for educational, empathy, and simulation purposes only. It does not provide medical diagnoses or replace professional eye examinations. For any vision concerns, please consult a certified optometrist or ophthalmologist. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: HearBeats at none against SightFrame's 2. SightFrame's advantage is update cadence (every 5 days vs every 6 weeks) and iOS requirement (15.0 vs 17.0). On price, ads 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. SightFrame sells 2 in-app purchases, starting at $2.99 per year. HearBeats asks for nothing beyond the download.
HearBeats ships an update every 6 weeks, SightFrame every 5 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.
| Parameter | HearBeats | SightFrame |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 32 MB |
| Age rating | 4+ | 12+ |
| Developer | Christopher Johnson | 书同 田 |
In-app purchases
HearBeats
No in-app purchases
SightFrame
- SightFrame Pro Annual$2.991 Year
- SightFrame Pro Lifetime$6.99






