Comparison

THOTH ECG vs SightFrame

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

THOTH ECG

Features
Read full description

THOTH ECG (wearable dynamic electrocardiogram recorder software) can monitor heart rate for a long time, display dynamic electrocardiogram in real time, and also view heart rate in real time. When the heart rate exceeds the set expected value, there will be a sound reminder to inform, making it a good assistant for your daily life. Function: -View real-time electrocardiogram; -View real-time heart rate; -When the heart rate exceeds the set expected value, there is a sound reminder to inform; Note: This app does not replace seeking medical treatment at a hospital. If you experience any discomfort during the monitoring process, please consult a doctor or professional as soon as possible~

About

SightFrame

Features
Read full description

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 β€’ Live Diopter Control: Adjust spherical power from 0 to -10.0D+ to observe realistic distance defocus. β€’ Astigmatism Effects: Directional blur, streaks, and double-vision glareβ€”especially in low-light environments. β€’ Presbyopia Mode: Central focus difficulty simulating age-related near vision loss. β€’ Color Deficiency Filters: Protanopia, Deuteranopia, and Tritanopia color matrix transformations. 2. Realistic Preset Scenes β€’ Explore common everyday environments like night driving, classroom blackboards, metro signs, and rainy streetscapes. β€’ Switch effortlessly between clear vision and simulated refractive errors. 3. Split-Screen Comparison & Fine Tuning β€’ Compare side-by-side (Split View) between normal vision and simulated filters. β€’ Fine-tune blur radius, halo intensity, pupil distance, and astigmatism axis angles. 4. Standard Eye Chart β€’ Interactive Tumbling E / Snellen chart for eye test exploration and vision awareness. 5. Privacy & Clean Experience β€’ 100% On-Device Processing: Camera feed is rendered locally in real time. We NEVER record, save, or upload your photos or videos. β€’ 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

THOTH ECG3 screens
SightFrame4 screens

Verdict

The call

The clearest difference is update cadence: SightFrame at every 5 days against THOTH ECG's every 8 months. THOTH ECG's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

THOTH ECG ships an update every 8 months, SightFrame every 5 days. The most recent releases landed on October 5, 2026 and October 11, 2026 respectively.

Scorecard2 real differences Β· 4 level
THOTH ECG versus SightFrame: the parameters behind the verdict, then further details
ParameterTHOTH ECGSightFrame
PriceFreeFree
Update frequencyEvery 8 monthsEvery 5 days β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod β€” better
Requires iOS13.0 β€” better15.0
Further details β€” not scored
Size5 MB32 MB
Age rating12+12+
Developer紒思(θ‹ε·ž)εŒ»η–—η§‘ζŠ€ζœ‰ι™ε…¬εΈδΉ¦εŒ η”°

In-app purchases

None

THOTH ECG

No in-app purchases

None

SightFrame

No in-app purchases

Questions

Is THOTH ECG free?
THOTH ECG is free to download, with no in-app purchases.
Is SightFrame free?
SightFrame is free to download, with no in-app purchases.
Do THOTH ECG or SightFrame have ads?
Neither THOTH ECG nor SightFrame shows ads.
Which is updated more often, THOTH ECG or SightFrame?
THOTH ECG ships an update every 8 months, and SightFrame every 5 days. Most recently, THOTH ECG was updated on October 5, 2026 and SightFrame on October 11, 2026.

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