Data packs vs monthly VPN plans: which to choose by usage

The difference between a data pack and a monthly VPN plan isn't just how you pay — it's two different assumptions about usage. Pick the wrong side and the usual outcome is paying every month for capacity you never touch, or buying a top-up mid-month. This article estimates monthly usage for three patterns — light browsing, long streaming sessions, and office work — then shows how to put data packs and monthly plans on the same footing, and finally explains how the price difference is prorated over the remaining days when you upgrade mid-cycle.

The site currently offers two billing models: monthly subscriptions and data packs. Monthly subscriptions come in three tiers — ¥9.9/month for 60GB, ¥18/month for 250GB, and ¥28/month for 500GB — with traffic resetting every month on the activation date. Data packs come in three tiers — ¥158/300GB, ¥358/1000GB, and ¥658/3000GB — and last until used up, never expiring. Neither model limits the number of devices, both accept Alipay / WeChat / USDT, and signing up takes only a username and password — no email address required.

Billing logic: monthly reset vs. use-it-up

The differences between the two models come down to four dimensions; the estimates that follow use this table as their baseline. Every price and capacity in the table is a current tier listed on the site, with no conversion applied.

The real dividing line is whether the allowance expires. A monthly plan resets on the activation date — the same day next month — and whatever is left over does not roll over. A data pack has no reset: what you buy is what you get, and it never goes to zero no matter how long it sits. That single point sets the direction for every comparison below: a monthly plan is about steady supply each month, a data pack is about whether the total is enough.

Usage estimates: monthly ranges for three patterns

The estimate doesn't need to be precise to the gigabyte — it only has to place your usage inside or outside a given capacity tier. Below are three common patterns, followed by a general formula.

Light browsing

Web pages, social media, messaging, music streaming, the occasional short video, one to two hours a day. Most traffic comes from images and autoplaying video on pages, and usually lands inside the lowest 60GB tier. What needs extra headroom is background work — system updates and cloud photo sync — which tends to saturate the connection when you're not looking.

Long streaming sessions

Video is the big variable. At typical 1080p bitrates, expect roughly 1GB to 2GB per hour; 4K is noticeably higher. Two hours a day works out to tens of gigabytes a month, up to a hundred or more. If a phone, tablet, and TV are playing at once, the 250GB tier is safer; a household watching 4K on several devices at the same time should look at the 500GB tier.

Office work

Video calls, cloud documents, code repository sync, remote desktop. Office traffic per session is small, but calls are two-way — upload counts too — and cloud drive sync or pulling system images can spike to hundreds of megabytes or several gigabytes at a time. If you sit in long calls or pull images often, start from the 250GB tier.

Estimated monthly usage (GB) ≈ hours used per day × GB per hour × days used in the month

Run the numbers for all three patterns and take the highest as your monthly ceiling. The three things people most often forget are system and app updates, cloud backups, and autoplaying video on web pages. Better to overestimate the ceiling than to pick a tier by the floor, since bitrates and update sizes both fluctuate.

Conversion method: compare on the same footing

Putting the two models on the same footing takes just two numbers: cost per GB and your own monthly usage. The first compares unit price across tiers; the second tells you whether a tier is enough. Read the two conclusions separately.

Cost per GB = tier price ÷ tier capacity
Tier is enough = estimated monthly usage ≤ tier capacity

Plug in the numbers from earlier. The three monthly tiers are ¥9.9 for 60GB, ¥18 for 250GB, and ¥28 for 500GB; the three data packs are ¥158 for 300GB, ¥358 for 1000GB, and ¥658 for 3000GB. The cost per GB only describes unit price — it isn't a conclusion on its own, because monthly allowances reset and don't accumulate, while data pack allowances never expire. The same “unused allowance” is worth different things when one side zeroes it and the other keeps it.

Another easily missed point is the time scale. A monthly plan counts in consecutive months and suits steady long-term use; a data pack counts in total volume and suits compressing a year of scattered needs into one purchase. If your usage is seasonal, adding up the whole year and checking it against the three data pack capacities is often more intuitive than paying month by month.

When a data pack fits better

In these situations, “lasts until used up, never expires” is worth more than a monthly reset.

• Usage concentrated in a few months: business trips, exam prep, a product launch, a season — and almost nothing the rest of the year.
• You need a long-term backup route: switched to only when the main route is unavailable, with very low day-to-day consumption.
• You don't want a monthly charge: buy once, use until it runs out, no renewal reminders.
• Usage swings a lot: heavy this month, almost nothing next month — a monthly reset would zero out whatever is left.
• Several devices but a controllable total: devices aren't limited, the allowance is counted per account, and sharing it across devices costs nothing extra.

Conversely, if you use it every day at a steady rate, the “never expires” advantage of a data pack never comes into play — you'd use it up anyway, and you've only turned a monthly expense into a one-off one without saving anything on paper.

When a monthly plan fits better

When you use it every day at a predictable rate, the monthly reset is actually a guarantee: as long as you stay within the tier, the available volume is fixed each month. The three tiers are as follows.

The tiers differ only in capacity and price — there's no feature segmentation. Unlimited devices, 100+ countries, and 220+ routes are common to all of them. When choosing, take one tier above your estimated ceiling for the past month; that's safer than picking by the average.

Mid-cycle upgrade: the price difference is prorated by remaining days

Monthly plan traffic resets on the activation date each month. Upgrading mid-cycle doesn't start a new month; instead, the difference between the old and new tiers is prorated over the days remaining in the current month and charged.

The direction is easy to picture: the closer to the activation date you upgrade, the closer the charge is to the full monthly difference; the closer to the next reset date, the less you pay. Days already past are counted at the old tier and are not charged retroactively.

Checkout shows the prorated amount — read it before confirming. After the upgrade, renewals from the next billing cycle follow the new tier's price.

Choosing: a checklist

Go through these before ordering. The model that matches most of the “fits” items is the better fit right now.

• ✅ You can say roughly how long you use it each day over the past month, and whether that time goes mostly to video or to documents
• ✅ You use it every day at a steady rate: a monthly plan first
• ✅ You use it only two or three months a year, or only as a backup: a data pack first
• ✅ Several devices share it: neither model limits devices, so pick a tier by the account total
• ❌ Comparing only the total price without looking at how much you'll actually use
• ❌ Treating a data pack as an allowance that refills each month
• ❌ Upgrading repeatedly mid-month on impulse and losing track of the bill

Conclusion