CompTox Mobile vs ZapYap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CompTox Mobile
Access a vast database of chemical structures and associated data, including physicochemical properties and toxicity information. Search by mass, NMR shifts, name, or CAS number to evaluate chemical safety.
- Chemical structure search
- Exact mass lookup
- ¹³C NMR chemical shift search
- CAS Registry Number search
- Physicochemical property data
- Toxicity data access
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Find chemical structure instantly by exact mass (m/z), ¹³C NMR chemical shifts, structure name or CAS Registry Number in a database of about 720,000 EPA CompTox structures. The Chemistry Dashboard is part of a suite of dashboards developed by EPA to help evaluate the safety of chemicals. The Chemistry Dashboard provides access to a variety of information on over 720,000 chemicals. Within the Chemistry Dashboard, users can access chemical structures, experimental and predicted physicochemical and toxicity data, and additional links to relevant websites and applications. It maps curated physicochemical property data associated with chemical substances to their corresponding chemical structures. This data are compiled from sources including the EPA’s computational toxicology research databases, and public domain databases such as the National Center for Biotechnology Information’s PubChem database.
ZapYap
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AI Features - AI Chat with all the latest models - Private AI Chat using local models (require download) - Secure chat sessions stored locally on device - Generous free usage tier - Create todolist and notes straight from the AI prompt ------------------------------------------------------------------------------------------ Features - Zero Knowledge Architecture - Generous free account tier - Simple and convenient to use - Military grade encryption directly on your devices * best practices to further enhance your own safely online https://zapyap.com/en/security/ ------------------------------------------------------------------------------------------ Use any of the following methods to secure your account: Fingerprint Login Easy and quick access to mobile app using fingerprint (mobile app only) IP Address Verification Any new IP addresses will be required to verify through mobile or email Device ID Verification Mobile or email notification will be sent to approve new devices Mobile App 2FA Login Receive notification on mobile to approve any new logins TOTP 2FA Verification Use any 2FA TOTP apps like Google Authenticator or Authy Backup Email Set a backup email for login, in case main email account has been lost
Screenshots
Verdict
The clearest difference is iOS requirement: CompTox Mobile at 6.0 against ZapYap's 16.0. 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | CompTox Mobile | ZapYap |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | — | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 6.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 254 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Kirill Blinov | Neutron Lock |
In-app purchases
CompTox Mobile
No in-app purchases
ZapYap
No in-app purchases









