Sudo Encrypt vs DNS Kit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sudo Encrypt
Securely encrypt and decrypt messages using RSA encryption. Generate your own keypairs, import others' public keys, and sign/verify message signatures. Seamlessly integrate with iMessage for easy sharing of encrypted content.
- Generate RSA keypairs locally
- Encrypt messages with public keys
- Decrypt messages with private keys
- Sign and verify message signatures
- iMessage extension for seamless integration
- Embed encrypted messages as iMessage objects
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- Generate RSA keypairs locally - Import others' public keys and encrypt messages to send to others - Decrypt messages others sent to you with your private key - Sign / Verify message signature Best of all, encryption and decryption of messages can be done directly in the iMessage app. When using the in-app extension, you no longer have to send a long piece of string, the encrypted message is embedded into an iMessage object so the other side can just click and decrypt.
DNS Kit
Investigate DNS and email configurations with detailed record lookups and propagation checks. Monitor your domains for changes and receive alerts. Offers free basic tools with optional Pro upgrades for advanced features.
- DNS record lookups (A, AAAA, CNAME, MX, TXT, SOA, PTR)
- SPF and DMARC inspection
- DKIM selector discovery
- DNS propagation comparison across 35+ resolvers
- Domain monitoring with push alerts
- Saved domains for easy access
- Optional Pro subscription for advanced features
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DNS Kit helps developers, IT professionals and website owners investigate DNS and email configuration from their iPhone. DNS AND EMAIL DIAGNOSTICS Look up A, AAAA, CNAME, MX, TXT, SOA and PTR records. Inspect SPF and DMARC, discover common DKIM selectors, and review findings with explanations. A DKIM record that is not discovered is shown as unconfirmed, rather than proof that signing is broken. DNS PROPAGATION Compare answers from 35+ public resolvers, view captured responses on a map, and track an expected value or resolver agreement. Resolver locations identify the resolver services; checks are not independent probes running in each city. SAVED DOMAINS AND MONITORING Keep your domains together and see which findings need attention. Create health or propagation monitors, receive push alerts, and inspect the evidence from previous checks. Saving a domain and enabling monitoring are separate actions. FREE TO USE Manual tools and explanations remain free. Guest accounts include 1 active monitor; signing in includes 2 active monitors, hourly checks and the latest 11 checks per monitor. Paused and completed monitors do not use an active slot. OPTIONAL DNS KIT PRO Upgrade to up to 100 monitors, checks as often as every 5 minutes, and the latest 100 checks per monitor. Choose a monthly or annual auto-renewing subscription. Prices and billing periods are shown before purchase. Timing can vary during outages or heavy load. Saved history builds from future checks. Subscriptions renew automatically unless cancelled in your Apple account settings. When Pro expires, retained monitors return to hourly checks and newer monitors beyond the free allowance pause. Monitor definitions are not deleted. Privacy: https://dnskit.dev/privacy Terms: https://dnskit.dev/terms Apple standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Sudo Encrypt at none against DNS Kit's 2. Sudo Encrypt also leads on iOS requirement (13.0 vs 15.0). DNS Kit's advantage is rating (5.0 vs 4.7). On price, ratings volume, update cadence and ads 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. DNS Kit sells 2 in-app purchases, starting at $4.99 per month. Sudo Encrypt asks for nothing beyond the download.
DNS Kit holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 6 and 3 respectively.
Sudo Encrypt ships an update every 9 days, DNS Kit weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Sudo Encrypt | DNS Kit |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (6 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | 3 |
| Update frequency | Every 9 days | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 2 MB | 83 MB |
| Age rating | 4+ | 4+ |
| Developer | Shunzhe Ma | Becoming Ventures, LLC |
Customer experience
Sudo Encrypt
DNS Kit
In-app purchases
Sudo Encrypt
No in-app purchases
DNS Kit
- DNS Kit Pro Monthly$4.991 Month
- DNS Kit Pro Annual$39.991 Year









