GPU Tracker vs G Authenticator App
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
GPU Tracker
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Stop opening 10 browser tabs to find the cheapest GPU. GPU Tracker watches prices across 10 cloud providers β AWS, Google Cloud, Azure, Lambda Labs, RunPod, Vast.ai, CoreWeave, Paperspace, Hyperstack, and Salad β and shows you the cheapest current rate for every major NVIDIA GPU. WHAT YOU CAN DO - Browse live prices for H100, H200, A100 (40GB and 80GB), L40S, L4, A10, RTX 4090, RTX 3090, and B200 - Filter by GPU model, pricing type (on-demand, spot, community), and provider - See a price history chart for any instance - Set price alerts β for example, "notify me when 1x H100 spot drops below $1.50/hr" - Get push notifications when an alert fires - Tap any offer to jump straight to the provider's booking page ASK AN AI ASSISTANT Describe your workload β "fine-tune Llama 3 70B for 12 hours" or "cheapest A100 for an experiment" β and our AI assistant (powered by Anthropic's Claude) recommends the best option with reasoning. It knows the live price catalog and considers your duration, GPU count, and reliability needs. WHO THIS IS FOR - ML engineers and researchers training models on a budget - Indie AI developers shopping for the best deal on inference - Startup founders watching cloud burn rate HOW IT WORKS We refresh prices every hour from each provider's public API or pricing page. Alerts evaluate every 15 minutes. The app is free to use. PRIVACY We store your email (for sign-in), your alerts, and your anonymous push token. That's it. No tracking, no ads, no selling your data. Full policy: sridharrajarao.com/privacy Built by an indie developer. Feedback: sridhar.rajarao@gmail.com
G Authenticator App
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Need a faster way to manage 2FA codes without switching between messages? Set up your accounts with QR scanning, generate MFA, OTP, and TOTP verification codes, and keep your authentication codes organized in one place. Scan, save, and access your verification codes whenever you need them. 2FA & MFA Codes for Secure Sign-Ins Add an extra verification step to accounts that support two-factor or multi-factor authentication. Once an account is added, the app generates the current verification code directly on your device. When a service asks for a 2FA or MFA code, open the app, find the account, and enter the current code. No need to wait for an SMS when authenticator-based verification is supported. Fast Setup with QR Scanner Adding an account is simple. Open the built-in QR scanner and scan the authentication QR code provided by the service. OTP & TOTP Code Generator Generate OTP and TOTP verification codes for compatible services. Codes refresh automatically at regular intervals, giving you the current code whenever authentication is required. Use the authenticator with supported email accounts, work tools, shopping services, social platforms, payment services, and more. Manage Multiple Accounts Keep authentication codes for multiple accounts organized in one place. Add accounts, rename entries, update details, and remove codes you no longer need. Whether you use the app for personal accounts, work accounts, or both, your verification codes remain easy to find. Offline Authentication Codes Access your saved authentication codes even without an internet connection. Codes are generated directly on your device, making them available when your connection is weak, you are traveling, or SMS verification is not available. App Lock for Extra Privacy Protect access to your authentication codes with Face ID, Touch ID, or a PIN. Auto-lock can automatically secure the app when you are no longer using it, helping keep your 2FA codes, MFA codes, and account information private. Password Storage & Private Browsing Keep login credentials organized with built-in password storage. Save account details and quickly copy them when needed. The app also includes a private browser for opening websites and login pages without storing browsing history, cookies, or logs inside the app. Main Features β’ 2FA and MFA authenticator codes β’ OTP and TOTP verification codes β’ QR scanner for fast setup β’ Manual secret key entry β’ Offline authentication codes β’ Multiple account management β’ Face ID, Touch ID, PIN, and auto-lock β’ Password storage β’ Private browser Make Two-Step Verification Easier When a service supports two-factor authentication, this app helps keep your temporary login codes ready on your device. Open the saved account, enter the current code, and continue signing in without waiting for a text message. Download the app to generate 2FA and MFA verification codes, scan authentication QR codes, manage OTP and TOTP accounts, and keep your login tools together in one convenient place. Premium Subscription Unlock full access to Premium features. Payment is charged to your Apple ID at confirmation of purchase. The subscription renews automatically unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours before the current period ends. Manage or cancel your subscription in your Apple ID Account Settings. If a free trial is offered, any unused portion may be forfeited when you purchase Premium. To restore a previous purchase, tap βRestore Purchaseβ in the app settings. Prices may vary by region. Taxes may apply. Support: [support@calify-ai.com](mailto:support@calify-ai.com) Terms of Use: [https://www.calify-ai.com/terms-of-use-authenticator](https://www.calify-ai.com/terms-of-use-authenticator) Privacy Policy: [https://www.calify-ai.com/privacy-policy-authenticator](https://www.calify-ai.com/privacy-policy-authenticator)
Screenshots
Verdict
The clearest difference is update cadence: GPU Tracker at every 11 days against G Authenticator App's every 5 weeks. GPU Tracker also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.2). On price, ads and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GPU Tracker ships an update every 11 days, G Authenticator App every 5 weeks. The most recent releases landed on July 6, 2026 and September 29, 2026 respectively.
| Parameter | GPU Tracker | G Authenticator App |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 11 days β better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod β better | iPhone |
| Requires iOS | 15.1 β better | 17.2 |
| Further details β not scored | ||
| Size | 32 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Sridhar Rajarao | Calify-AI |
In-app purchases
GPU Tracker
No in-app purchases
G Authenticator App
No in-app purchases





