Authenticator vs Tuner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Authenticator
Secure your online accounts with this open-source two-factor authentication app. It supports TOTP and offers multiple convenient setup and export options, all while remaining completely offline and private.
- TOTP algorithm support
- QR code scanning for setup
- Import accounts from files
- Manual account entry
- Export account keys
- Offline functionality
- Open-source
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Authenticator is an elegant, open-source two-factor authentication app that supports the Time-based One-Time Password (TOTP) algorithm. It offers multiple convenient methods to set up your accounts: • Scan a QR Code. • Read from a QR Code image. • Import from a file. • Manual entry. The app features an beautiful “Account Details” page that displays each account along with its QR Code. You can view or copy this information at any time. Authenticator also provides several easy ways to export all your accounts: • Export key URIs to the clipboard. • Export key URIs as plain text. • Export key URIs as a TXT file. • Export key URIs as QR Code images. Authenticator always remains offline and never connects to any networks. It does not track any data or collect any personal information. Just works as it should be. Authenticator is fully open source on GitHub: https://github.com/bingzheung/authenticator
Tuner
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Tuner: Note & Hz is a minimal pitch tuner that shows only what you need: the detected note, frequency in Hz, and a simple tuning meter. Open the app, allow microphone access, and play or sing a note. The app detects the pitch in real time and displays the nearest note, the measured frequency, and whether the pitch is low, centered, or high. No ads. No tracking. No account. No subscription. No extra features you did not ask for. Features: - Real-time pitch detection - Detected note display - Frequency display in Hz - Simple low / center / high meter - Works with guitar, bass, voice, synths, and other pitched sounds - Audio is processed on device - No data collection - Works offline Tuner: Note & Hz is designed for people who want a clean, simple tuner without clutter.
Screenshots
Verdict
The clearest difference is price: Tuner at Free against Authenticator's $0.99. Tuner also leads on update cadence (every 3 weeks vs every 2 months). Authenticator's advantage is chart position (#188 vs unranked) and device support (4 vs 1). On ads and in-app purchases 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
Tuner is free to download; Authenticator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Authenticator ships an update every 2 months, Tuner every 3 weeks. The most recent releases landed on September 24, 2026 and September 11, 2026 respectively.
| Parameter | Authenticator | Tuner |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #188 — better | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone |
| Requires iOS | 15.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 7 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | 兵 张 | Taisei Mima |
In-app purchases
Authenticator
No in-app purchases
Tuner
No in-app purchases









