Choosing between a VPN data pack and a monthly plan comes down to two things: how much data you actually use and how regularly you use the service. If you connect only occasionally, such as when traveling or looking something up, a data pack may be worth comparing. For daily work or frequent streaming, start with monthly plans. Don’t just divide the price by the advertised data allowance—factor in idle months and unused data, too.
If you use little data and have long gaps between sessions, focus on data packs that never expire. If your usage is steady and continuous, compare monthly plans that cover what you need. Judge by actual spending over the same period—not by choosing the plan with the biggest data allowance.
Check the plan rules first
VPNFJ monthly plans include a data allowance that resets on the date you activate the plan, not at the start of each calendar month. Data packs last until you use them up and never expire. The key difference is how you use the data: with a monthly plan, consider whether you can make good use of it during each billing period; with a data pack, consider whether the prepaid allowance fits your long-term needs.
| Billing type | Price | Included data | Data rules |
|---|---|---|---|
| Monthly plan | ¥9.9/month | 60GB | Resets on activation date |
| Monthly plan | ¥18/month | 250GB | Resets on activation date |
| Monthly plan | ¥28/month | 500GB | Resets on activation date |
| Data pack | ¥158 | 300GB | Valid until used; never expires |
| Data pack | ¥358 | 1000GB | Valid until used; never expires |
| Data pack | ¥658 | 3000GB | Valid until used; never expires |
When you upgrade a monthly plan, the price difference is converted into remaining days. This does not mean you can assume that data carries over, stacks automatically, or follows any particular overage policy. If you plan to use a monthly plan and a data pack together, check the dashboard first for the data deduction order and applicable rules. Don’t simply add the two allowances together and treat the total as a guaranteed benefit.
Unlimited simultaneous connections don’t mean unlimited data. Include usage across computers, tablets, and other devices in your budget. At home or work, background syncing is often easier to overlook than the sites and apps you actively use.
Estimate monthly usage from actual records
“I use it every day” doesn’t translate into a fixed amount of data. Text searches, image-heavy browsing, video streaming, and cloud transfers can use very different amounts. Even at work, a remote terminal and a video meeting are not comparable. A more reliable approach is to track representative workdays, days off, and large file transfers, then estimate usage for your billing period.
- Set the measurement period first. Record the remaining data shown in your dashboard, the date, and the devices connected at the time. If your client provides usage statistics, use them as a reference—but don’t assume they match the server-side billing total.
- Track different activities separately. Note changes during everyday browsing, streaming, work, and large downloads. Don’t treat a one-off system update as a daily usage pattern.
- Account for routine and occasional tasks. Multiply representative average daily usage by the expected number of days, then add known large file transfers. Flag activities without measured data rather than making up an estimate.
- Match the reset period. For a monthly plan, track usage across the period that starts on your activation date. Looking at only the last few days of a period may underestimate your needs for the full cycle.
Estimated period usage = representative average daily usage × expected days of use + occasional task usage
Monthly plan comparison cost = selected monthly price × number of paid months in the comparison period
Data pack comparison cost = actual cost of the data packs needed to cover estimated total usage
Actual cost per unit = actual spending during the comparison period ÷ data actually used
Light browsing: account for idle periods
If you mainly look things up, read documents, and occasionally use online tools, your data use may be low. But autoplay, image loading, and file downloads can change the picture, so don’t assume usage is minimal just because you’re “only browsing.”
First ask yourself: when you’re not traveling or working on a project, do you go long stretches without using the service? If so, a data pack lets you save unused data for later. That’s the main advantage of data that never expires—not a guarantee that each session will cost less than with a monthly plan.
On the other hand, if you need a connection every day and measured usage stays within 60GB per billing period, the ¥9.9/month plan is a useful benchmark. Data packs don’t reset monthly, but require a larger upfront payment. Don’t prepay for far more data than you know you need just to chase a lower theoretical cost per unit.
Long-term streaming: track ongoing usage
Streaming data use depends on video quality, encoding, runtime, and the platform’s adaptive playback settings. There’s no single per-hour estimate that applies to every video. Seeking, replaying, and preloading can also use data. Stick to your usual quality, check the dashboard before and after watching, and estimate from your viewing habits.
If you stream regularly over long periods, compare monthly plans first. Check whether your estimated usage per billing period fits within the 60GB, 250GB, or 500GB tier, then compare the corresponding monthly prices. A larger tier isn’t automatically better value for everyone; if you consistently leave data unused, that extra allowance doesn’t improve your viewing experience.
If you mainly binge shows during holidays and then don’t stream for a long time, consider a data pack instead. Keep access and billing separate: buying more data doesn’t guarantee access to a particular platform. Playback may depend on service availability in your region, content rights, and the platform’s own checks. See the streaming guide before choosing a plan.
Everyday work: understand split tunneling and background tasks
A few large tasks often account for most work-related data use. Document collaboration and text-based communication may use little, while video calls, cloud sync, and downloading development dependencies can consume data steadily. Estimate both routine workdays and busy project periods rather than tracking only quiet days.
With rule-based routing, client rules determine which requests go through the proxy and which connect directly. Global proxy mode typically routes more traffic through the selected server. Your previous usage estimate may no longer apply after switching modes. A system proxy doesn’t necessarily cover every app, either; traffic routing depends on the app and the client’s operating mode.
Client permissions and background behavior can vary across Windows, macOS, iOS, Android, and Linux. Don’t assume every device will use the same rules just because you imported the same subscription. Check which settings are actually in effect, then see whether cloud sync, app updates, and video calls are routed through the proxy. For setup steps, see the guides.
Don’t disrupt your workflow just to save data. If a work service needs a consistent regional connection, keep your exit location relatively stable. Frequently changing regions or routing rules for key apps just to use slightly less data can cause more problems than it solves.
Compare costs over the same period
Choose a period that reflects how you actually plan to use the service, then compare costs. For a monthly plan, count the months you’ll actually pay for during that period. For a data pack, consider the purchase cost of the packs needed to cover your estimated total usage. Don’t compare a data pack’s advertised price per unit with a monthly plan’s price per unit assuming you use every last bit of data.
There are two ways to look at data pack costs: cash spent is the amount you’ve paid, while the remaining allowance is data you can still use. If you have data left at the end of the comparison period, it can still be used later—but don’t count it as cash saved. For monthly plans, look at actual usage too; unused data shouldn’t be counted as a benefit based on the advertised allowance.
If your usage is close to a tier’s limit, first check whether the peak came from a one-off task or a lasting change. For a one-off, check the rules for handling it; consider upgrading only if the increase is ongoing. If you have connection problems, don’t assume you need to buy more data. Check your remaining allowance, subscription status, and server first. Start with troubleshooting.
- ✅ Tracked representative usage instead of guessing from time spent online.
- ✅ Compared the same period and accounted for both idle months and months of regular use.
- ✅ Included multiple devices, cloud sync, and large downloads in the usage estimate.
- ✅ Checked the actual rules for activation-date resets, upgrades, and combining plans.
- ❌ Don’t overlook the upfront cost and unused data just because a larger pack has a lower advertised price per unit.
Measure first, estimate next, then find a plan that covers your needs. If you use the service regularly and can predict your usage, compare monthly plans first. If usage is infrequent, low, or irregular, start with data packs. Compare actual spending with actual usage to determine which option offers better value.
VPNFJ offers a 7-day money-back guarantee; eligibility is subject to the terms. The service describes its privacy policy as “anonymous, no logs,” but this doesn’t replace good account security or safe configuration. No email address is required—just a username and password. Before choosing, read the full plan details to make sure the billing rules fit how you use the service.