univCodon vs Spam Zero
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
univCodon
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This App is designed for Researchers and University Students in the Field of Molecular Biology. This App shows the "universal Genetic Codon" and structures of cognate Amino acid residues and bases. iOS16 or later.
Spam Zero
Block unwanted spam calls with a vast database of known spammers. This privacy-focused app keeps all blocking data on your device, ensuring your calls and contacts remain private. Enjoy smart protection that distinguishes spam from important calls with an easy setup.
- Block 1M+ known spam numbers
- Complete privacy, no data collection
- Device-only call blocking
- Smart protection for important calls
- Automatic spam database updates
- Real-time call blocking
- Easy setup in minutes
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Tired of endless spam calls? Spam Zero gives you back control of your phone with powerful, privacy-focused call blocking. KEY FEATURES: • Massive Database: Protection from 1,000,000+ known spam numbers • Complete Privacy: We never see your calls or contacts • Device-Only: All data stays securely on your iPhone • Zero Data Collection: We never track or upload your information • Smart Protection: Blocks spam while letting important calls through • Easy Setup: Get protected in minutes PRIVACY FIRST Your privacy is our foundation. Spam Zero is designed with a strict privacy-first approach: • No access to your personal calls or contacts • All blocking happens directly on your device • No data collection or tracking • No cloud storage of your information POWERFUL PROTECTION • Automatic updates to spam number database • Real-time call blocking • Visual status monitoring • Protection status tracking • Simple, intuitive interface GET STARTED Download Spam Zero today and join thousands of users who've taken back control of their phone calls. Setup takes just minutes, and you'll be protected immediately. SUPPORT Need help? Questions? Contact our support team at hey@getspamzero.com Note: Spam Zero requires iOS call blocking permissions to function. Follow the in-app setup guide to enable all features.
Screenshots
Verdict
univCodon and Spam Zero are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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 | univCodon | Spam Zero |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.1 (18 ratings) — better |
| Positive reviews | — | 33.3% of reviews |
| Number of ratings | — | 18 — better |
| Update frequency | — | Every 3 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.1 — better | 17.2 |
| Further details — not scored | ||
| Size | 3 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Terumichi Tanaka | Kavun, LLC |
In-app purchases
univCodon
No in-app purchases
Spam Zero
No in-app purchases









