Authenticator+ vs CIDR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Authenticator+
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Authenticator+ is no longer actively maintained. We've built its successor: Keylet — 2FA Authenticator. Same makers, everything you're used to, but faster, fully private (nothing leaves your device), with passkey support and NO ads. Import your existing codes in one tap. Search "Keylet" on the App Store to make the switch.
CIDR
This utility calculates IP address ranges from an IP address and subnet mask. It supports IPv4 calculations, including prefix display, address range counts, and bit notation. Useful for quick CIDR notation checks and subnet mask conversions.
- IP address range calculation
- Subnet mask to CIDR conversion
- IPv4 prefix display
- Number of address ranges
- Bit notation display
- Quick reference table
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Calculate the IP address range from the IP address and subnet mask. It can be used to calculate IPv4 addresses, including prefix display, number of address ranges, and bit notation. CIDR calculation, when you want to check CIDR notation quickly. To convert subnet mask to CIDR notation. It can also be used as a quick reference table for subnet masks. Bit notation is also available, so it is suitable for learning IPv4.
Screenshots
Verdict
The clearest difference is in-app purchases: Authenticator+ at none against CIDR's 1. Authenticator+ also leads on iOS requirement (13.0 vs 15.6). CIDR's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 16 months). On price 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. CIDR sells 1 one-off in-app purchase. Authenticator+ asks for nothing beyond the download.
Authenticator+ ships an update every 16 months, CIDR every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Authenticator+ | CIDR |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 16 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 20 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Studio Fifteen | akira ohmachi |
In-app purchases
Authenticator+
No in-app purchases
CIDR
- Remove Ads$1.99
