Two factor authenticator vs GPU Tracker
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Two factor authenticator
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We adds an extra layer of security to your online accounts by adding a second step of verification when you sign in. This means that in addition to your password, you'll also need to enter a code that is generated by our app on your phone. The verification code can be generated by our app on your phone, even if you don't have a network or cellular connection. โข Sync your Authenticator codes to your accounts and across your devices. This way, you can always access them even if you lose your phone. โข Set up your Authenticator accounts automatically with a QR code. This is quick and easy, and it helps to ensure that your codes are set up correctly. โข Support for multiple accounts. You can use the Authenticator app to manage multiple accounts, so you don't have to switch between apps every time you need to sign in. โข Support for time-based and counter-based code generation. You can choose the type of code generation that best suits your needs. โข Transfer accounts between devices with a QR code. This is a convenient way to move your accounts to a new device. To use app with accounts, you need to enable 2-Step Verification on your accounts. Terms of use: https://devworldvn.com/term Privacy link: https://devworldvn.com/privacy
GPU Tracker
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Stop opening 10 browser tabs to find the cheapest GPU. GPU Tracker watches prices across 10 cloud providers โ AWS, Google Cloud, Azure, Lambda Labs, RunPod, Vast.ai, CoreWeave, Paperspace, Hyperstack, and Salad โ 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 โ 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 โ "fine-tune Llama 3 70B for 12 hours" or "cheapest A100 for an experiment" โ 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
Screenshots
Verdict
The clearest difference is in-app purchases: GPU Tracker at none against Two factor authenticator's 3. GPU Tracker also leads on ads (none vs shown) and update cadence (every 11 days vs monthly). On price, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Two factor authenticator sells 3 in-app purchases, starting at $1.99 per 7 days. GPU Tracker asks for nothing beyond the download.
Two factor authenticator ships an update monthly, GPU Tracker every 11 days. The most recent releases landed on September 23, 2026 and July 6, 2026 respectively.
| Parameter | Two factor authenticator | GPU Tracker |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 11 days โ better |
| Ads | Yes | No โ better |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 โ better | 15.1 |
| Further details โ not scored | ||
| Size | 45 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | nguyen thanh | Sridhar Rajarao |
In-app purchases
Two factor authenticator
- 1 Week Premium$1.997 Days
- One Month Premium$4.991 Month
- 1 Year Premium3 Days trial$19.991 Year
GPU Tracker
No in-app purchases





